Patent US4752360A successfully refreshed from Google Patents.
US4752360A
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US
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Corrosion probe and method for measuring corrosion rates
Assignee: Cities Service Oil and Gas Corp
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Filing: 1986-08-29
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Granted: 1988-06-21
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Expires: 2006-08-29
Abstract
Abstract A corrosion probe having in combination at least one first, at least one second, and at least one third electrode. A dielectric is positioned between the electrodes, and the dielectric has a structure defining an ionically conductive surface. An apparatus for measuring the corrosion rates of metals, or the like, in a corrosive liquid environment comprising the corrosion probe, a potentiostat electrically attached to the electrodes of the corrosion probe, and a signal generator electrically communicating with the potentiostat. The apparatus also has a voltmeter and an ammeter. A process for measuring the corrosion rates of metals in a corrosive liquid environment comprising attaching electrically the corrosion probe to a potentiostat. The corrosion probe is inserted into the corrosive liquid environment and either a predetermined known current is signaled to the potentiostat or a predetermined known difference in potential is signaled to the potentiostat. The potentiostat transmits the current, or applies the difference in potential, to the corrosion probe. An electromotive force between the first electrode and an area in the corrosive liquid environment in general microscopic proximity to the first electrode is determined. The corrosion current is computed from the determined electromotive force and the measured amperage. The probe may be utilized to detect electrochemically active components in a generally nonionic conductive fluid.
Inventors
- 👤 Raymond J. Jasinski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 14:14
CPC Classifications
G; G01; G01N; G01N17/00; G01N17/02
Claims Analysis
Total Claims: 203
Claim 1
Independent Claim
72 words
A corrosion probe means utilized in measuring the corrosion rates of metals in a corrosive liquid environment, comprising in combination at least one first electrode means; at least one second electrode means; at least one third electrode means; a dielectric means positioned between each of the first and second electrode means and between each of the second and the third electrode means, and wherein said dielectric means has an ionically conductive surface.
Claim 2
Dependent Claim
72 words
A corrosion probe means utilized in measuring the corrosion rates of metals in a corrosive liquid environment, comprising in combination at least one first electrode means; at least one second electrode means; at least one third electrode means; a dielectric means positioned between each of the first and second electrode means and between each of the second and the third electrode means, and wherein said dielectric means has an ionically conductive surface.
Claim 3
Dependent Claim
50 words
The corrosion probe of claim 1 wherein each of said first, said second, and said third electrode means respectively terminates in a first, a second and a third electrode end means, each of said electrode end means is substantially in a coplanar relationship among and with respect to each other.
Claim 4
Dependent Claim
25 words
The corrosion probe of claim 2 wherein each of said first and said second electrode end means are positioned less than about 0.35 inches apart.
Claim 5
Dependent Claim
27 words
The corrosion probe of claim 2 wherein each of said first and said second electrode end means are from about 0.01 inches to about 0.20 inches apart.
Claim 6
Dependent Claim
25 words
The corrosion probe of claim 2 wherein each of said second and said third electrode end means are positioned less than about 0.35 inches apart.
Claim 7
Dependent Claim
27 words
The corrosion probe of claim 2 wherein each of said second and said third electrode end means are from about 0.01 inches and about 0.20 inches apart.
Claim 8
Dependent Claim
44 words
The corrosion probe of claim 2 wherein said dielectric means has an ionically conductive surface between each of said first electrode end means and said second electrode end means and between each of said second electrode end means and said third electrode end means.
Claim 9
Dependent Claim
69 words
The corrosion probe of claim 1 wherein each of said second electrode means is positioned between each of said first and said third electrode means; and said first electrode means is a working electrode and the electrode upon which the corrosion rate in the corrosive liquid environment is to be determined; and said second electrode means is a reference electrode; and said third electrode means is a counter electrode.
Claim 10
Dependent Claim
40 words
The corrosion probe of claim 8 wherein each of said first and said second electrode means are positioned less than about 0.35 inches apart, and said second and said third electrode means are positioned less than about 0.35 inches apart.
Claim 11
Dependent Claim
41 words
The corrosion probe of claim 1 additionally comprising at least one first depending conductor means attached to said at least one first electrode means, and at least one second depending conductor means connected to said at least one second electrode means.
Claim 12
Dependent Claim
24 words
The corrosion probe of claim 10 additionally comprising at least one third depending conductor means attached to said at least on third electrode means.
Claim 13
Dependent Claim
81 words
The corrosion probe of claim 1 wherein said first electrode means has a structure defining a cylinder means, said second electrode means has a general structure defining essentially a cylindrical ring means circumferentially surrounding said first electrode means and concentrically positioned with respect thereto, and said third electrode means has a general structure defining essentially a cylindrical ring means circumferentially surrounding said second electrode means and concentrically positioned with respect to said first electrode means and to said second electrode means.
Claim 14
Dependent Claim
42 words
The corrosion probe of claim 12 wherein said first cylinder electrode means has a diameter of less than about 0.25 inches, and each of said second and third essentially cylindrical ring electrode means have a thickness of less than about 0.25 inches.
Claim 15
Dependent Claim
36 words
The corrosion probe of claim 1 wherein each of said first, said second, and said third electrode means respectively terminates in a first, a second and a third electrode end means, each having a rectangular cross-section.
Claim 16
Dependent Claim
28 words
The corrosion probe of claim 14 wherein each of said first, said second, and said third rectangular edge means have a width of less than about 0.25 inches.
Claim 17
Dependent Claim
68 words
The corrosion probe of claim 14 comprising three first, four second, and two third electrode means; said three first, four second, and two third electrode means are serially postured as follows: a first electrode means; a second electrode means; a third electrode means; a second electrode means; a first electrode means; a second electrode means; a third electrode means; a second electrode means; and a first electrode means.
Claim 18
Dependent Claim
123 words
The corrosion probe of claim 1 wherein said ionically conductive surface of said dielectric means is between each of said first and said second electrode means and between each of said second and said third electrode means; each of said first, said second, and said third electrode means respectively terminates in a first, a second and a third electrode end means; each of said electrode end means and said ionically conductive surface of said dielectric means are substantially in a coplanar relationship among and with respect to each other; each of said first and said second electrode end means are less than about 0.35 inches apart; each of said second and said third electrode end means are less than about 0.35 inches apart.
Claim 19
Dependent Claim
15 words
The corrosion probe of claim 17 wherein said ionically conductive surface comprises imbedded ionic means.
Claim 20
Dependent Claim
17 words
The corrosion probe of claim 17 wherein said ionically conductive surface was formed by being chemically etched.
Claim 21
Dependent Claim
27 words
The corrosion probe of claim 1 additionally comprising a sheath means, and said dielectric means is additionally positioned between said third electrode means and said sheath means.
Claim 22
Dependent Claim
236 words
A corrosion probe means utilized in measuring the corrosion rates of metal in a corrosive liquid environment, comprising in combination: at least one first electrode means, at least one second electrode means, at least one third electrode means and a sheath means; each of said first, said second, and said third electrode means has a first, a second and a third electrode end means, respectively which terminate in a common plane and form the face of the corrosion probe means; and said sheath means has a sheath end means which generally terminates in said common plane; a dielectric means filling the space between said electrode means and between said electrode means and said sheath means and extending from said common plane at least along a part of the length of said electrode means and said sheath means, said dielectric means has an ionically conductive surface between the electrodes in said common plane; each of said first and said second electrode end means are positioned less than about 0.35 inches apart; each of said second and said third electrode end means are positioned less than about 0.35 inches apart; at least one first depending conductor means is attached to each of said first electrode means; at least one second depending conductor means is connected to each of said second electrode means; at least one third depending conductor means is attached to each of said third electrode means.
Claim 23
Dependent Claim
236 words
A corrosion probe means utilized in measuring the corrosion rates of metal in a corrosive liquid environment, comprising in combination: at least one first electrode means, at least one second electrode means, at least one third electrode means and a sheath means; each of said first, said second, and said third electrode means has a first, a second and a third electrode end means, respectively which terminate in a common plane and form the face of the corrosion probe means; and said sheath means has a sheath end means which generally terminates in said common plane; a dielectric means filling the space between said electrode means and between said electrode means and said sheath means and extending from said common plane at least along a part of the length of said electrode means and said sheath means, said dielectric means has an ionically conductive surface between the electrodes in said common plane; each of said first and said second electrode end means are positioned less than about 0.35 inches apart; each of said second and said third electrode end means are positioned less than about 0.35 inches apart; at least one first depending conductor means is attached to each of said first electrode means; at least one second depending conductor means is connected to each of said second electrode means; at least one third depending conductor means is attached to each of said third electrode means.
Claim 24
Dependent Claim
45 words
The corrosion probe of claim 21 wherein each of said first, said second, and said third electrode end means includes a structure generally defining a first, a second, and a third rectangular edge means respectively, each having a width of less than about 0.25 inches.
Claim 25
Independent Claim
189 words
An apparatus for measuring the corrosion rates of metals, in a corrosive liquid environment, comprising in combination at least one first electrode means having at least one first depending conductor means attached thereto; at least one second electrode means having at least one second depending conductor means bound thereto; at least one third electrode means having at least one third depending conductor means connected thereto; a dielectric means positioned between each of the first and second electrode means and between each of the second and the third electrode means, said dielectric means has an ionically conductive surface; at least one means electrically engaged to said at least one first, at least one second, and at least one third depending conductor means for transmitting current through each of the first electrode means, over the ionic dielectric surface between each of the first electrode means and each of the third electrode means, and through each of the third electrode means back to the means for transmitting current; at least one means for measuring the difference in potential between each of the first electrode means and each of the second electrode means.
Claim 26
Independent Claim
189 words
An apparatus for measuring the corrosion rates of metals, in a corrosive liquid environment, comprising in combination at least one first electrode means having at least one first depending conductor means attached thereto; at least one second electrode means having at least one second depending conductor means bound thereto; at least one third electrode means having at least one third depending conductor means connected thereto; a dielectric means positioned between each of the first and second electrode means and between each of the second and the third electrode means, said dielectric means has an ionically conductive surface; at least one means electrically engaged to said at least one first, at least one second, and at least one third depending conductor means for transmitting current through each of the first electrode means, over the ionic dielectric surface between each of the first electrode means and each of the third electrode means, and through each of the third electrode means back to the means for transmitting current; at least one means for measuring the difference in potential between each of the first electrode means and each of the second electrode means.
Claim 27
Dependent Claim
79 words
The apparatus of claim 23 wherein each of said first, said second, and said third electrode means respectively terminates into a first, a second and a third electrode end means, each of said electrode end means is substantially in a coplanar relationship among and with respect to each other, said means for transmitting current is a potentiostat means; and at least one means for signaling to the potentiostat means the current which is to be transmitted by the same.
Claim 28
Dependent Claim
43 words
The apparatus of claim 24 wherein each of said first and said second electrode end means are positioned less than about 0.35 inches apart, and each of said second and said third electrode end means are positioned less than about 0.35 inches apart.
Claim 29
Dependent Claim
53 words
The apparatus of claim 24 wherein each of said first electrode end means and an adjacent said second electrode end means are positioned less than about 0.35 inches part, and each of said second electrode end means and an adjacent said third electrode end means are positioned less than about 0.35 inches apart.
Claim 30
Dependent Claim
20 words
The apparatus of claim 23 wherein said second electrode means is positioned between said first and said third electrode means.
Claim 31
Dependent Claim
80 words
The apparatus of claim 23 wherein said first electrode means has a structure defining a cylinder means, said second electrode means has a general structure defining essentially a cylindrical ring means circumferentially surrounding said first electrode means and concentrically positioned with respect thereto, and said third electrode means has a general structure defining essentially a cylindrical ring means circumferentially surrounding said second electrode means and concentrically positioned with respect to said first electrode means and to said second electrode means.
Claim 32
Dependent Claim
40 words
The apparatus of claim 27 wherein said first cylinder electrode means has a diameter of less than about 0.25 inches, each of said second and third essentially cylindrical ring electrode means have a thickness of less than about 0.25 inches.
Claim 33
Dependent Claim
58 words
The apparatus of claim 23 wherein each of said first, said second, and said third electrode means respectively terminates into a first, a second and a third electrode end means; each of said first, said second, and said third electrode end means includes a structure generally defining a first, a second, and a third rectangular edge means, respectively.
Claim 34
Dependent Claim
27 words
The apparatus of claim 30 wherein each of said first, said second, and said third rectangular edge means have a width of less than about 0.25 inches.
Claim 35
Dependent Claim
123 words
The apparatus of claim 23 wherein said ionically conductive surface of said dielectric means is between each of said first and said second electrode means and between each of said second, and said third electrode means; each of said first, said second, and said third electrode means respectively terminates into a first, a second, and a third electrode end means; each of said electrode end means and said ionically conductive surface of said dielectric means are substantially in a coplanar relationship among and with respect to each other; each of said first and said second electrode end means are less than about 0.35 inches apart; and each of said second and said third electrode end means are less than about 0.35 inches apart.
Claim 36
Dependent Claim
14 words
The apparatus of claim 32 wherein said ionically conductive surface comprises imbedded ionic means.
Claim 37
Dependent Claim
20 words
The apparatus of claim 32 wherein said ionically conductive surface comprises a structure having been formed by being chemically etched.
Claim 38
Dependent Claim
80 words
The apparatus of claim 23 wherein each of said first, said second and said third electrode means respectively terminates into a first, a second and a third electrode end means, each of said electrode end means is substantially in a coplanar relationship among and with respect to each other, said means for transmitting current comprises a potentiostat means; and at least one means for signaling to the means for transmitting current, the current which is to be transmitted by same.
Claim 39
Dependent Claim
59 words
The apparatus of claim 23 wherein said first electrode means comprises a cylindrical first electrode means, said second electrode means comprises a substantially ring second electrode means circumferentially surrounding and concentric with said cylindrical first electrode means, and said third electrode means comprises a substantially cylindrical third electrode means circumferentially surrounding and concentric with said ring second electrode means.
Claim 40
Dependent Claim
38 words
The apparatus of claim 36 wherein said cylindrical first electrode means has a diameter of less than about 0.25 inches, and each of said second and third electrode means has a thickness of less than about 0.25 inches.
Claim 41
Dependent Claim
319 words
A process for measuring the corrosion rates of metals in a corrosive liquid environment, comprising the steps of: (a) inserting a corrosion probe means into a corrosive liquid environment; (b) attaching electrically to a means for transmitting current, the corrosion probe means comprising in integral combination at least one first, at least one second, and at least one third electrode means; a dielectric means having an ionically conductive surface and positioned beween the first and second electrode means and between the second and third electrode means; a predetermined known ohmic resistance between the first and second electrode means; and a predetermined known electromotive force between said second electrode means and an area in the surrounding corrosive liquid environment in general microscopic proximity thereto; (c) transmitting with said means for transmitting current a first predetermined known current through the first electrode means, over the ionic dielectric surface between the first electrode means and the third electrode means, and through the third electrode means back to the means for transmitting current; (d) measuring simultaneously with step (c) the electromotive force between the first and second electrode means; (e) calculating from the predetermined known current of step (c) and the predetermined known ohmic resistance of step (b) an electromotive force between an area in the corrosive liquid environment in general microscopic proximity to the first electrode means and an area in the corrosive liquid environment in general proximity to the second electrode means; (f) determining an electromotive force between the first electrode means and an area in the corrosive liquid environment in general microscopic proximity to the first electrode means by subtracting from the measured electromotive force of step (d), the electromotive force of step (e) and the predetermined known electromotive force of step (b); and (g) computing a corrosion current on the first electrode means from the determined electromotive force of step (f) and the predetermined known current of step (c).
Claim 42
Dependent Claim
319 words
A process for measuring the corrosion rates of metals in a corrosive liquid environment, comprising the steps of: (a) inserting a corrosion probe means into a corrosive liquid environment; (b) attaching electrically to a means for transmitting current, the corrosion probe means comprising in integral combination at least one first, at least one second, and at least one third electrode means; a dielectric means having an ionically conductive surface and positioned beween the first and second electrode means and between the second and third electrode means; a predetermined known ohmic resistance between the first and second electrode means; and a predetermined known electromotive force between said second electrode means and an area in the surrounding corrosive liquid environment in general microscopic proximity thereto; (c) transmitting with said means for transmitting current a first predetermined known current through the first electrode means, over the ionic dielectric surface between the first electrode means and the third electrode means, and through the third electrode means back to the means for transmitting current; (d) measuring simultaneously with step (c) the electromotive force between the first and second electrode means; (e) calculating from the predetermined known current of step (c) and the predetermined known ohmic resistance of step (b) an electromotive force between an area in the corrosive liquid environment in general microscopic proximity to the first electrode means and an area in the corrosive liquid environment in general proximity to the second electrode means; (f) determining an electromotive force between the first electrode means and an area in the corrosive liquid environment in general microscopic proximity to the first electrode means by subtracting from the measured electromotive force of step (d), the electromotive force of step (e) and the predetermined known electromotive force of step (b); and (g) computing a corrosion current on the first electrode means from the determined electromotive force of step (f) and the predetermined known current of step (c).
Claim 43
Dependent Claim
57 words
The process of claim 38 wherein said computing step (g) includes the following equation: ##EQU3## where I A is the predetermined known applied current of step (c); BC is a known cathodic Tafel constant; BA is a known anodic Tafel constant; P is the determined electromotive force of step (f); and I C is the corrosion current.
Claim 44
Dependent Claim
18 words
The process of claim 38 additionally comprising converting the corrosion current of step (g) into a corrosion rate.
Claim 45
Dependent Claim
350 words
A process for measuring the corrosion rates of metals in a corrosive liquid environment, comprising the steps of: (a) inserting a corrosion probe means into a corrosive liquid environment; (b) attaching electrically to a means for transmitting current the corrosion probe means comprising in integral combination at least one first, at least one second, and at least one third electrode means; a dielectric means having an ionically conductive surface and positioned between the first and second electrode means and between the second and third electrode means; a predetermined known ohmic resistance between the first and second electrode means; and a predetermined known electromotive force between said second electrode means and an area in the surrounding corrosive liquid environment in general microscopic proximity thereto; (c) transmitting with said means for transmitting current a first predetermined known current through the first electrode means, over the ionic dielectric surface between the first electrode means and the third electrode means, and through the third electrode means back to the means for transmitting current; (d) measuring simultaneously with step (c) the electromotive force between the first and second electrode means; (e) calculating from the predetermined known current of step (c) and the predetermined known ohmic resistance of step (b) an electromotive force between an area in the corrosive liquid environment in general microscopic promixity to the first electrode means and an area in the corrosive liquid environment in general microscopic proximity to the second electrode means; (f) determining an electromotive force between the first electrode means and an area in the corrosive liquid environment in general microscopic proximity to the first electrode means by subtracting from the measured electromotive force of step (d), the electromotive force of step (e) and the predetermined known electromotive force of step (b); (g) repeating steps (c) through (f) with a second predetermined known current to determine a second electromotive force; and (h) computing a corrosion current on the first electrode means from the electromotive force of step (f) and the first predetermined known current and from the second electromotive force of step (g) and the second predetermined known current.
Claim 46
Dependent Claim
350 words
A process for measuring the corrosion rates of metals in a corrosive liquid environment, comprising the steps of: (a) inserting a corrosion probe means into a corrosive liquid environment; (b) attaching electrically to a means for transmitting current the corrosion probe means comprising in integral combination at least one first, at least one second, and at least one third electrode means; a dielectric means having an ionically conductive surface and positioned between the first and second electrode means and between the second and third electrode means; a predetermined known ohmic resistance between the first and second electrode means; and a predetermined known electromotive force between said second electrode means and an area in the surrounding corrosive liquid environment in general microscopic proximity thereto; (c) transmitting with said means for transmitting current a first predetermined known current through the first electrode means, over the ionic dielectric surface between the first electrode means and the third electrode means, and through the third electrode means back to the means for transmitting current; (d) measuring simultaneously with step (c) the electromotive force between the first and second electrode means; (e) calculating from the predetermined known current of step (c) and the predetermined known ohmic resistance of step (b) an electromotive force between an area in the corrosive liquid environment in general microscopic promixity to the first electrode means and an area in the corrosive liquid environment in general microscopic proximity to the second electrode means; (f) determining an electromotive force between the first electrode means and an area in the corrosive liquid environment in general microscopic proximity to the first electrode means by subtracting from the measured electromotive force of step (d), the electromotive force of step (e) and the predetermined known electromotive force of step (b); (g) repeating steps (c) through (f) with a second predetermined known current to determine a second electromotive force; and (h) computing a corrosion current on the first electrode means from the electromotive force of step (f) and the first predetermined known current and from the second electromotive force of step (g) and the second predetermined known current.
Claim 47
Dependent Claim
81 words
The process of claim 41 wherein said computing step (h) includes the following equations which are solved simultaneously: ##EQU4## where I A1 is the first predetermined known current; P1 is the first electromotive force of step (f); I A2 is the second predetermined known current; P2 is the second electromotive force of step (g); BC and BA are cathodic and anodic Tafel constants, respectively, wherein one is known and the other is an unknown; and I C is the corrosion current.
Claim 48
Dependent Claim
18 words
The process of claim 41 additionally comprising converting the corrosion current of step (h) into a corrosion rate.
Claim 49
Dependent Claim
382 words
A process for measuring the corrosion rates of metals in a corrosive liquid environment, comprising the steps of: (a) inserting a corrosion probe means into a corrosive liquid environment; (b) attaching electrically to a means for transmitting current the corrosion probe means comprising in integral combination at least one first, at least one second, and at least one third electrode means; a dielectric means having an ionically conductive surface and positioned between the first and second electrode means and between the second and third electrode means; a predetermined known ohmic resistance between the first and second electrode means; and a predetermined known electromotive force between said second electrode means and an area in the surrounding corrosive liquid environment in general microscopic proximity thereto; (c) transmitting with said means for transmitting current a first predetermined known current through the first electrode means, over the ionic dielectric surface between the first electrode means and the third electrode means, and through the third electrode means back to the means for transmitting current; (d) measuring simultaneously with step (c) the electromotive force between the first and second electrode means; (e) calculating from the predetermined known current of step (c) and the predetermined known ohmic resistance of step (b) an electromotive force between an area in the corrosive liquid environment in general microscopic proximity to the first electrode means and an area in the corrosive liquid environment in general microscopic proximity to the second electrode means; (f) determining an electromotive force between the first electrode means and an area in the corrosive liquid environment in general microscopic proximity to the first electrode means by subtracting from the measured electromotive force of step (d), the electromotive force of step (e) and the predetermined known electromotive force of step (b); (g) repeating steps (c) through (f) with a second predetermined known current to determine a second electromotive force; (h) repeating steps (c) through (f) with a third predetermined known current to determine a third electromotive force; and (i) computing a corrosion current on the first electrode means from the electromotive force of step (f) and the first predetermined known current, from the second electromotive force of step (g) and the second predetermined known current, and from the third electromotive force of step (h) and the third predetermined known current.
Claim 50
Dependent Claim
382 words
A process for measuring the corrosion rates of metals in a corrosive liquid environment, comprising the steps of: (a) inserting a corrosion probe means into a corrosive liquid environment; (b) attaching electrically to a means for transmitting current the corrosion probe means comprising in integral combination at least one first, at least one second, and at least one third electrode means; a dielectric means having an ionically conductive surface and positioned between the first and second electrode means and between the second and third electrode means; a predetermined known ohmic resistance between the first and second electrode means; and a predetermined known electromotive force between said second electrode means and an area in the surrounding corrosive liquid environment in general microscopic proximity thereto; (c) transmitting with said means for transmitting current a first predetermined known current through the first electrode means, over the ionic dielectric surface between the first electrode means and the third electrode means, and through the third electrode means back to the means for transmitting current; (d) measuring simultaneously with step (c) the electromotive force between the first and second electrode means; (e) calculating from the predetermined known current of step (c) and the predetermined known ohmic resistance of step (b) an electromotive force between an area in the corrosive liquid environment in general microscopic proximity to the first electrode means and an area in the corrosive liquid environment in general microscopic proximity to the second electrode means; (f) determining an electromotive force between the first electrode means and an area in the corrosive liquid environment in general microscopic proximity to the first electrode means by subtracting from the measured electromotive force of step (d), the electromotive force of step (e) and the predetermined known electromotive force of step (b); (g) repeating steps (c) through (f) with a second predetermined known current to determine a second electromotive force; (h) repeating steps (c) through (f) with a third predetermined known current to determine a third electromotive force; and (i) computing a corrosion current on the first electrode means from the electromotive force of step (f) and the first predetermined known current, from the second electromotive force of step (g) and the second predetermined known current, and from the third electromotive force of step (h) and the third predetermined known current.
Claim 51
Dependent Claim
92 words
The process of claim 44 wherein said computing step (i) includes the following equations which are solved simultaneously: ##EQU5## Where I A1 is the first predetermined known current; P1 is the first electromotive force of step (f); I A2 is the second predetermined known current; P2 is the second electromotive force of step (g); I A3 is the third predetermined known current; P3 is the third electromotive force of step (h); BC and BA are cathodic and anodic Tafel constants, respectively which are both unknown; and I C is the corrosion current.
Claim 52
Dependent Claim
18 words
The process of claim 44 additionally comprising converting the corrosion current of step (i) into a corrosion rate.
Claim 53
Dependent Claim
142 words
A corrosion probe means utilized in measuring the corrosion rates of metals in a corrosive liquid environment, comprising in combination at least one first electrode means; at least one second electrode means; at least one third electrode means; a dielectric means positioned between each of the first and the second electrode means and between each of the second and the third electrode means, said dielectric means has an ionically conductive surface between each of said first and said second electrode means and between said second and said third electrode means; each of said first, said second, and said third electrode means respectively terminates into a first, a second and a third electrode end means; each of said electrode end means and said ionically conductive surface of said dielectric means are substantially in a coplanar relationship among and with respect to each other.
Claim 54
Dependent Claim
142 words
A corrosion probe means utilized in measuring the corrosion rates of metals in a corrosive liquid environment, comprising in combination at least one first electrode means; at least one second electrode means; at least one third electrode means; a dielectric means positioned between each of the first and the second electrode means and between each of the second and the third electrode means, said dielectric means has an ionically conductive surface between each of said first and said second electrode means and between said second and said third electrode means; each of said first, said second, and said third electrode means respectively terminates into a first, a second and a third electrode end means; each of said electrode end means and said ionically conductive surface of said dielectric means are substantially in a coplanar relationship among and with respect to each other.
Claim 55
Dependent Claim
164 words
A corrosion probe means utilized in measuring the corrosion rates of metals in a corrosive liquid environment, comprising in combination at least one first electrode means; at least one second electrode means; at least one third electrode means; a dielectric means positioned between each of the first and the second electrode means and between each of the second and the third electrode means, said dielectric means has an ionically conductive surface between each of said first and said second electrode means and between said second and said third electrode means; each of said first, and second, and said third electrode means respectively terminates into a first, a second and a third electrode end means; each of said electrode end means and said ionically conductive surface of said dielectric means are substantially in a coplanar relationship among and with respect to each other; and said first electrode means is the electrode upon which the corrosion rate in the corrosive liquid environment is to be determined.
Claim 56
Dependent Claim
164 words
A corrosion probe means utilized in measuring the corrosion rates of metals in a corrosive liquid environment, comprising in combination at least one first electrode means; at least one second electrode means; at least one third electrode means; a dielectric means positioned between each of the first and the second electrode means and between each of the second and the third electrode means, said dielectric means has an ionically conductive surface between each of said first and said second electrode means and between said second and said third electrode means; each of said first, and second, and said third electrode means respectively terminates into a first, a second and a third electrode end means; each of said electrode end means and said ionically conductive surface of said dielectric means are substantially in a coplanar relationship among and with respect to each other; and said first electrode means is the electrode upon which the corrosion rate in the corrosive liquid environment is to be determined.
Claim 57
Dependent Claim
136 words
A corrosion probe means utilized in measuring the corrosion rates of metals in a corrosive liquid environment, comprising in combination at least one first electrode means; a first dielectric means with an ionic conductive surface juxtaposed to said first electrode means; at least one second electrode means juxtaposed to said first dielectric means; a second dielectric means with an ionic conductive surface juxtaposed to said second electrode means; at least one third electrode means juxtaposed to said second dielectric means; each of said first, said second, and said third electrode means respectively terminates into a first, a second, and a third electrode end means; each of said electrode end means and said ionically conductive surface of said first and said second dielectric means are substantially in a coplanar relationship among and with respect to each other.
Claim 58
Dependent Claim
136 words
A corrosion probe means utilized in measuring the corrosion rates of metals in a corrosive liquid environment, comprising in combination at least one first electrode means; a first dielectric means with an ionic conductive surface juxtaposed to said first electrode means; at least one second electrode means juxtaposed to said first dielectric means; a second dielectric means with an ionic conductive surface juxtaposed to said second electrode means; at least one third electrode means juxtaposed to said second dielectric means; each of said first, said second, and said third electrode means respectively terminates into a first, a second, and a third electrode end means; each of said electrode end means and said ionically conductive surface of said first and said second dielectric means are substantially in a coplanar relationship among and with respect to each other.
Claim 59
Dependent Claim
164 words
A corrosion probe means utilized in measuring the corrosion rates of metal in a corrosive liquid environment, comprising in combination at least one first electrode means terminating into a first electrode end means; at least one second electrode means terminating into a second electrode end means; a first dielectric means positioned between the first and the second electrode means and terminating into a first dielectric end surface means having a first ionic conductive surface; at least one third electrode means terminating into a third electrode means; a second dielectric means positioned between the second and the third electrode means and terminating into a second dielectric end surface means having a second ionic conductive surface; each of said electrode end means and said first and said second ionically conductive surface is substantially in a coplanar relationship among and with respect to each other; and said first electrode means is the electrode upon which the corrosion rate in the corrosive liquid environment is to be determined.
Claim 60
Dependent Claim
164 words
A corrosion probe means utilized in measuring the corrosion rates of metal in a corrosive liquid environment, comprising in combination at least one first electrode means terminating into a first electrode end means; at least one second electrode means terminating into a second electrode end means; a first dielectric means positioned between the first and the second electrode means and terminating into a first dielectric end surface means having a first ionic conductive surface; at least one third electrode means terminating into a third electrode means; a second dielectric means positioned between the second and the third electrode means and terminating into a second dielectric end surface means having a second ionic conductive surface; each of said electrode end means and said first and said second ionically conductive surface is substantially in a coplanar relationship among and with respect to each other; and said first electrode means is the electrode upon which the corrosion rate in the corrosive liquid environment is to be determined.
Claim 61
Dependent Claim
50 words
A corrosion probe means utilized in measuring the corrosion rates of metals in a corrosive liquid environment, comprising in combination a first electrode means; a second electrode means; and a dielectric means positioned between the first and the second electrode means, and said dielectric means has an ionically conductive surface.
Claim 62
Dependent Claim
50 words
A corrosion probe means utilized in measuring the corrosion rates of metals in a corrosive liquid environment, comprising in combination a first electrode means; a second electrode means; and a dielectric means positioned between the first and the second electrode means, and said dielectric means has an ionically conductive surface.
Claim 63
Dependent Claim
44 words
The corrosion probe of claim 51 wherein said first and said second electrode means, respectively, terminate into a first and a second electrode end means, each of said electrode end means is substantially in a coplanar relationship among and with respect to each other.
Claim 64
Dependent Claim
23 words
The corrosion probe of claim 52 wherein the first and the second electrode end means are positioned less than about 0.35 inches apart.
Claim 65
Dependent Claim
43 words
The corrosion probe of claim 52 wherein said ionically conductive surface of said dielectric means between said first and said second electrode end means is substantially in a coplanar relationship among and with respect to said first and said second electrode end means.
Claim 66
Dependent Claim
30 words
The corrosion probe of claim 51 or 54 wherein said second electrode means is the electrode upon which the corrosion rate in the corrosive liquid environment is to be determined.
Claim 67
Dependent Claim
31 words
The corrosion probe of claim 51 additionally comprising a first depending conductor means attached to said first electrode means, and a second depending conductor means connected to said second electrode means.
Claim 68
Dependent Claim
45 words
The corrosion probe of claim 51 wherein said first electrode means has a structure defining a cylinder means, and said second electrode means has a general structure defining essentially a cylindrical ring means circumferentially surrounding said first electrode means and concentrically positioned with respect thereto.
Claim 69
Dependent Claim
38 words
The corrosion probe of claim 57 wherein said first cylinder electrode means has a diameter of less than about 0.25 inches, and said second essentially cylindrical ring electrode means has a thickness of less than about 0.25 inches.
Claim 70
Dependent Claim
68 words
The corrosion probe of claim 51 wherein said first and said second electrode means, respectively, terminate into a first and a second electrode end means; each of said electrode end means and said ionically conductive surface of said dielectric means are substantially in a coplanar relationship among and with respect to each other; said first and said second electrode end means are less than about 0.35 inches apart.
Claim 71
Dependent Claim
15 words
The corrosion probe of claim 59 wherein said ionically conductive surface comprises imbedded ionic means.
Claim 72
Dependent Claim
21 words
The corrosion probe of claim 59 wherein said ionically conductive surface comprises a structure having been formed by being chemically etched.
Claim 73
Dependent Claim
42 words
The corrosion probe of claim 51 wherein said first electrode means is a cylindrical first electrode means, and said second electrode means is a substantially cylindrical sleeve second electrode means concentric with and having a radius greater than said first electrode means.
Claim 74
Dependent Claim
38 words
The corrosion probe of claim 59 wherein said cylindrical first electrode means has a diameter of less than about 0.35 inches, and said substantially cylindrical sleeve second electrode means has a thickness of less than about 0.35 inches.
Claim 75
Dependent Claim
198 words
A corrosion probe means utilized in measuring the corrosion rates of metals in a corrosive liquid environment, comprising in combination a first electrode means; a second electrode means; a sheath means; a dielectric means positioned between the first and the second electrode means and between the second electrode means and the sheath means, said dielectric means between said first and said second electrode means has an ionically conductive surface; said first and the second electrode means, respectively, terminate into a first and a second electrode end means which are substantially in a coplanar relationship among and with respect to each other; said sheath means terminates to a sheath end means that is generally coplanar with respect to the first and the second electrode end means; said first and the second electrode end means are positioned less than about 0.35 inches apart; a first depending conductor means attached to said first electrode means; a second depending conductor means connected to said secopnd electrode means; said ionically conductive surface is between the first electrode end means and the second electrode end means and is substantially in a coplanar relationship among and with respect to each of the electrode end means.
Claim 76
Dependent Claim
198 words
A corrosion probe means utilized in measuring the corrosion rates of metals in a corrosive liquid environment, comprising in combination a first electrode means; a second electrode means; a sheath means; a dielectric means positioned between the first and the second electrode means and between the second electrode means and the sheath means, said dielectric means between said first and said second electrode means has an ionically conductive surface; said first and the second electrode means, respectively, terminate into a first and a second electrode end means which are substantially in a coplanar relationship among and with respect to each other; said sheath means terminates to a sheath end means that is generally coplanar with respect to the first and the second electrode end means; said first and the second electrode end means are positioned less than about 0.35 inches apart; a first depending conductor means attached to said first electrode means; a second depending conductor means connected to said secopnd electrode means; said ionically conductive surface is between the first electrode end means and the second electrode end means and is substantially in a coplanar relationship among and with respect to each of the electrode end means.
Claim 77
Dependent Claim
71 words
A corrosion probe means utilized in measuring the corrosion rates of metals in a corrosive liquid environment, comprising in combination a first electrode means; a second electrode means; a third electrode means; a dielectric means positioned between the first and the second electrode means and between the second and the third electrode means, and wherein said dielectric means between said first and said second electrode means has an ionically conductive surface.
Claim 78
Dependent Claim
71 words
A corrosion probe means utilized in measuring the corrosion rates of metals in a corrosive liquid environment, comprising in combination a first electrode means; a second electrode means; a third electrode means; a dielectric means positioned between the first and the second electrode means and between the second and the third electrode means, and wherein said dielectric means between said first and said second electrode means has an ionically conductive surface.
Claim 79
Dependent Claim
48 words
The corrosion probe of claim 65 wherein said first, said second, and said third electrode means, respectively, terminate into a first, a second and a third electrode end means, each of said electrode end means is substantially in a coplanar relationship among and with respect to each other.
Claim 80
Dependent Claim
23 words
The corrosion probe of claim 66 wherein said first and said second electrode end means are positioned less than about 0.35 inches apart.
Claim 81
Dependent Claim
43 words
The corrosion probe of claim 65 wherein said second electrode means is positioned between said first and said third electrode means, and said second electrode means is the electrode upon which the corrosion rate in the corrosive liquid environment is to be determined.
Claim 82
Dependent Claim
43 words
The corrosion probe of claim 65 additionally comprising a first depending conductor means attached to said first electrode means; a second depending conductor means connected to a said second electrode means; and a third depending conductor means attached to said third electrode means.
Claim 83
Dependent Claim
81 words
The corrosion probe of claim 65 wherein said first electrode means has a structure defining a cylinder means, said second electrode means has a general structure defining essentially a cylindrical ring means circumferentially surrounding said first electrode means and concentrically positioned with respect thereto, and said third electrode means has a general structure defining essentially a cylindrical ring means circumferentially surrounding said second electrode means and concentrically positioned with respect to said first electrode means and to said second electrode means.
Claim 84
Dependent Claim
83 words
The corrosion probe of claim 65 wherein said first, said second and said third electrode means, respectively, terminate into a first, a second and a third electrode end means; said first and said second electrode end means and said ionically conductive surface of said dielectric means between said first and said second electrode end means are substantially in a coplanar relationship among and with respect to each other; said first and said second electrode end means are less than about 0.35 inches apart.
Claim 85
Dependent Claim
11 words
The corrosion probe of claim 65 additionally comprising a sheath means.
Claim 86
Dependent Claim
88 words
The corrosion probe of claim 65 wherein said first electrode means is a cylindrical first electrode means, said second electrode means is substantially a cylindrical ring second electrode means having a radius greater than and circumferentially surrounding said first electrode means and concentrically positioned with respect thereto, and said third electrode means is substantially a cylindrical ring third electrode means having a radius greater than and circumferentially surrounding said second electrode means and concentrically positioned with respect to said first electrode means and to said second electrode means.
Claim 87
Independent Claim
136 words
An apparatus for measuring the corrosion rates of metals in a corrosive liquid environment, comprising a first electrode means having a first depending conductor means attached thereto; a second electrode means having a second depending conductor means bound thereto; a dielectric means positioned between said first and said second electrode means, said dielectric means has an ionically conductive surface; a current conductive means having a third depending conductor means connected thereto; at least one means electrically engaged to said first, said second, and said third depending conductor means for transmitting current through said second electrode means, through the corrosive liquid environment, and through the current conductive means and back to the means for transmitting current; and at least one means for measuring the difference in potential between the first electrode means and the second electrode means.
Claim 88
Independent Claim
136 words
An apparatus for measuring the corrosion rates of metals in a corrosive liquid environment, comprising a first electrode means having a first depending conductor means attached thereto; a second electrode means having a second depending conductor means bound thereto; a dielectric means positioned between said first and said second electrode means, said dielectric means has an ionically conductive surface; a current conductive means having a third depending conductor means connected thereto; at least one means electrically engaged to said first, said second, and said third depending conductor means for transmitting current through said second electrode means, through the corrosive liquid environment, and through the current conductive means and back to the means for transmitting current; and at least one means for measuring the difference in potential between the first electrode means and the second electrode means.
Claim 89
Dependent Claim
45 words
The apparatus of claim 74 wherein said first and said second electrode means, respectively, terminate into a first and a second electrode end means, said first and said second electrode end means are substantially in a coplanar relationship among and with respect to each other.
Claim 90
Dependent Claim
45 words
The apparatus of claim 75 wherein said first and said second electrode end means and said ionically conductive surface of said dielectric means between said first and said second electrode end means are substantially in a coplanar relationship among and with respect to each other.
Claim 91
Dependent Claim
22 words
The appratus of claim 75 wherein said first and said second electrode end means are positioned less than about 0.35 inches apart.
Claim 92
Dependent Claim
25 words
The apparatus of claim 75 additionally comprising a sheath means; said dielectric means is additionally positioned between said second electrode means and said sheath means.
Claim 93
Dependent Claim
36 words
The apparatus of claim 74 wherein said means for transmitting current comprises a potentiostat means, and at least one means for signaling to the potentiostat means the current which is to be transmitted by the same.
Claim 94
Dependent Claim
43 words
The apparatus of claim 75 wherein said first electrode means has a structure defining a cylinder means, said second electrode means has a general structure defining essentially a cylindrical ring means circumferentially surrounding said first electrode means and concentrically positioned with respect thereto.
Claim 95
Dependent Claim
37 words
The apparatus of claim 75 wherein said first cylinder electrode means has a diameter of less than about 0.25 inches; and said second essentially cylindrical ring electrode means has a thickness of less than about 0.25 inches.
Claim 96
Dependent Claim
27 words
The apparatus of claim 74 wherein said second electrode means is the electrode upon which the corrosion rate in the corrosive liquid environment is to be determined.
Claim 97
Independent Claim
156 words
An apparatus for measuring the corrosion rates of metals in a corrosive liquid environment, comprising in combination a first electrode means having a first depending conductor means attached thereto; a second electrode means having a second depending conductor means bound thereto; a third electrode means having a third depending conductor connected thereto; a dielectric means positioned between the first and the second electrode means and between the second and the third electrode means, said dielectric means positioned between the first electrode means and the second electrode means has an ionically conductive surface; at least one means electrically engaged to the first, and second and the third depending conductor means for transmitting current through the second electrode means, through the corrosive liquid environment, and through the third electrode means back to the means for transmitting current; and at least one means for measuring the difference in potential between the first electrode means and the second electrode means.
Claim 98
Independent Claim
156 words
An apparatus for measuring the corrosion rates of metals in a corrosive liquid environment, comprising in combination a first electrode means having a first depending conductor means attached thereto; a second electrode means having a second depending conductor means bound thereto; a third electrode means having a third depending conductor connected thereto; a dielectric means positioned between the first and the second electrode means and between the second and the third electrode means, said dielectric means positioned between the first electrode means and the second electrode means has an ionically conductive surface; at least one means electrically engaged to the first, and second and the third depending conductor means for transmitting current through the second electrode means, through the corrosive liquid environment, and through the third electrode means back to the means for transmitting current; and at least one means for measuring the difference in potential between the first electrode means and the second electrode means.
Claim 99
Dependent Claim
49 words
The apparatus of claim 83 wherein said first, said second, and said third electrode means, respectively, terminate into a first, a second, and a third electrode end means, said first and said second electrode end means are substantially in a coplanar relationship among and with respect to each other.
Claim 100
Dependent Claim
45 words
The apparatus of claim 84 wherein said first and said second electrode end means and said ionically conductive surface of said dielectric means between said first and said second electrode end means are substantially in a coplanar relationship among and with respect to each other.
Claim 101
Dependent Claim
22 words
The apparatus of claim 84 wherein the first and the second electrode end means are positioned less than about 0.35 inches apart.
Claim 102
Dependent Claim
44 words
The apparatus of claim 84 wherein said second electrode means is positioned between the first electrode means and the third electrode means, and the second electrode means is the electrode upon which the corrosion rate in the corrosive liquid environment is to be determined.
Claim 103
Dependent Claim
36 words
The apparatus of claim 83 wherein said means for transmitting current comprises a potentiostat means, and at least one means for signaling to the potentiostat means the current which is to be transmitted by the same.
Claim 104
Dependent Claim
80 words
The apparatus of claim 83 wherein the first electrode means has a structure defining a cylinder means, said second electrode means has a general structure defining essentially a cylindrical ring means circumferentially surrounding said first electrode means and concentrically positioned with respect thereto, and said thrid electrode means has a general structure defining essentially a cylindrical ring means circumferentially surrounding said second electrode means and concentrically positioned with respect to said first electrode means and to said second electrode means.
Claim 105
Dependent Claim
14 words
The apparatus of claim 83 wherein said ionically conductive surface comprises imbedded ionic means.
Claim 106
Dependent Claim
20 words
The apparatus of claim 83 wherein said ionically conductive surface comprises a structure having been formed by being chemically etched.
Claim 107
Dependent Claim
25 words
The apparatus of claim 83 additionally comprising a sheath means; said dielectric means is additionally positioned between said third electrode means and said sheath means.
Claim 108
Dependent Claim
222 words
A process for measuring the corrosion rates of metals in a corrosive liquid environment, comprising the steps of: (a) inserting a corrosion probe means into a corrosive liquid environment; (b) attaching electrically to a means for transmitting current, the corrosion probe means comprising a first electrode means, a second electrode means, and a current conductive means; a dielectric means having an ionically conductive surface and positioned between the first and second electrode means; and a predetermined known electromotive force between the first electrode means and an area in the surrounding corrosive liquid environment in general microscopic proximity thereto; (c) transmitting with said means for transmitting current a first predetermined known current through the second electrode means, through the corrosive liquid environment, and through the current conductive means back to the means for transmitting current; (d) measuring simultaneously with step (c) the electromotive force between the first and second electrode means; (e) determining an electromotive force between the second electrode means and an area in the corrosive liquid environment in general microscopic proximity to the second electrode means by subtracting from the measured electromotive force of step (d), the predetermined known electromotive force of step (b); and (f) computing a corrosion current on the second electrode means form the determined electromotive force of step (e) and the predetermined known current of step (c).
Claim 109
Dependent Claim
222 words
A process for measuring the corrosion rates of metals in a corrosive liquid environment, comprising the steps of: (a) inserting a corrosion probe means into a corrosive liquid environment; (b) attaching electrically to a means for transmitting current, the corrosion probe means comprising a first electrode means, a second electrode means, and a current conductive means; a dielectric means having an ionically conductive surface and positioned between the first and second electrode means; and a predetermined known electromotive force between the first electrode means and an area in the surrounding corrosive liquid environment in general microscopic proximity thereto; (c) transmitting with said means for transmitting current a first predetermined known current through the second electrode means, through the corrosive liquid environment, and through the current conductive means back to the means for transmitting current; (d) measuring simultaneously with step (c) the electromotive force between the first and second electrode means; (e) determining an electromotive force between the second electrode means and an area in the corrosive liquid environment in general microscopic proximity to the second electrode means by subtracting from the measured electromotive force of step (d), the predetermined known electromotive force of step (b); and (f) computing a corrosion current on the second electrode means form the determined electromotive force of step (e) and the predetermined known current of step (c).
Claim 110
Dependent Claim
57 words
The process of claim 93 wherein said computing step (f) includes the following equation: ##EQU6## where I A is the predetermined known applied current of step (c); BC is a known cathodic Tafel constant; BA is a known anodic Tafel constant; P is the determined electromotive force of step (e); and I A is the corrosion current.
Claim 111
Dependent Claim
18 words
The process of claim 93 additionally comprising converting the corrosion current of step (f) into a corrosion rate.
Claim 112
Dependent Claim
254 words
A process for measuring the corrosion rates of metals in a corrosive liquid environment, comprising the steps of: (a) inserting a corrosion probe means into a corrosive liquid environment; (b) attaching electrically to a means for transmitting current the corrosion probe means for comprising a first electrode means, a second electrode means and a current conductive means; a dielectric means having an ionically conductive surface and positioned between the first and second electrode means; and a predetermined known electromotive known force between said first electrode means and an area in the surrounding corrosive liquid environment in general microscopic proximity thereto; (c) transmitting with said means for transmitting current a first predetermined known current through the second electrode means, through the corrosive liquid environment, and through the current conductive means back to the means for transmitting current; (d) measuring simultaneously with step (c) the electromotive force between the first and second electrode means; (e) determining an electromotive force between the second electrode means and an area in the corrosive liquid environment in general microscopic proximity to the second electrode means by subtracting from the measured electromotive force of step (d), the predetermined known electromotive force of step (b); (f) repeating steps (c) through (e) with a second predetermined known current to determine a second electromotive force; and (g) computing a corrosion current on the second electrode means from the electromotive force of step (e) and the first predetermined known current and from the second electromotive force of step (f) and the second predetermined known current.
Claim 113
Dependent Claim
254 words
A process for measuring the corrosion rates of metals in a corrosive liquid environment, comprising the steps of: (a) inserting a corrosion probe means into a corrosive liquid environment; (b) attaching electrically to a means for transmitting current the corrosion probe means for comprising a first electrode means, a second electrode means and a current conductive means; a dielectric means having an ionically conductive surface and positioned between the first and second electrode means; and a predetermined known electromotive known force between said first electrode means and an area in the surrounding corrosive liquid environment in general microscopic proximity thereto; (c) transmitting with said means for transmitting current a first predetermined known current through the second electrode means, through the corrosive liquid environment, and through the current conductive means back to the means for transmitting current; (d) measuring simultaneously with step (c) the electromotive force between the first and second electrode means; (e) determining an electromotive force between the second electrode means and an area in the corrosive liquid environment in general microscopic proximity to the second electrode means by subtracting from the measured electromotive force of step (d), the predetermined known electromotive force of step (b); (f) repeating steps (c) through (e) with a second predetermined known current to determine a second electromotive force; and (g) computing a corrosion current on the second electrode means from the electromotive force of step (e) and the first predetermined known current and from the second electromotive force of step (f) and the second predetermined known current.
Claim 114
Dependent Claim
80 words
The process of claim 96 wherein said computing step (g) includes the following equations which are solved simultaneously: ##EQU7## where I A1 is the first predetermined known current; P1 is the electromotive force of step (e); I A2 is the second predetermined known current; P2 is the second electromotive force of step (f); BC and BA are cathodic and anodic Tafel constants, respectively, wherein one is known and the other is an unknown; and I C is the corrosion current.
Claim 115
Dependent Claim
18 words
The process of claim 96 additionally comprising converting the corrosion current of step (g) into a corrosion rate.
Claim 116
Dependent Claim
284 words
A process for measuring the corrosion rates of metals in a corrosive liquid environment, comprising the steps of: (a) inserting a corrosion probe means into a corrosive liquid environment; (b) attaching electrically to a means for transmitting current the corrosion probe means comprising a first electrode means, a second electrode means, and a current conductive means; a dielectric means having an ionically conductive surface and positioned between the first and second electrode means; and a predetermined known electromotive force between the first electrode means and an area in the surrounding corrosive liquid environment in general microscopic proximity thereto; (c) transmitting with said means for transmitting current a first predetermined known current through the second electrode means, through the corrosive liquid environment, and through the current conductive means back to the means for transmitting current; (d) measuring simultaneously with step (c) the electromotive force between the first and second electrode means; (e) determining an electromotive force between the second electrode means and an area in the corrosive liquid environment in general microscopic proximity to the second electrode means by subtracting from the measured electromotive force of step (d) the predetermined known electromotive force of step (b); (f) repeating steps (c) through (e) with a second predetermined known current to determine a second electromotive force; (g) repeating steps (c) through (e) with a third predetermined known current to determine a third electromotive force; and (h) computing a corrosion current on the second electrode means from the electromotive force of step (e) and the first predetermined known current, from the second electromotive force of step (f) and the second predetermined known current, and from the third electromotive force of step (g) and the third predetermined known current.
Claim 117
Dependent Claim
284 words
A process for measuring the corrosion rates of metals in a corrosive liquid environment, comprising the steps of: (a) inserting a corrosion probe means into a corrosive liquid environment; (b) attaching electrically to a means for transmitting current the corrosion probe means comprising a first electrode means, a second electrode means, and a current conductive means; a dielectric means having an ionically conductive surface and positioned between the first and second electrode means; and a predetermined known electromotive force between the first electrode means and an area in the surrounding corrosive liquid environment in general microscopic proximity thereto; (c) transmitting with said means for transmitting current a first predetermined known current through the second electrode means, through the corrosive liquid environment, and through the current conductive means back to the means for transmitting current; (d) measuring simultaneously with step (c) the electromotive force between the first and second electrode means; (e) determining an electromotive force between the second electrode means and an area in the corrosive liquid environment in general microscopic proximity to the second electrode means by subtracting from the measured electromotive force of step (d) the predetermined known electromotive force of step (b); (f) repeating steps (c) through (e) with a second predetermined known current to determine a second electromotive force; (g) repeating steps (c) through (e) with a third predetermined known current to determine a third electromotive force; and (h) computing a corrosion current on the second electrode means from the electromotive force of step (e) and the first predetermined known current, from the second electromotive force of step (f) and the second predetermined known current, and from the third electromotive force of step (g) and the third predetermined known current.
Claim 118
Dependent Claim
91 words
The process of claim 99 wherein said computing step (h) includes the following equations which are solved simultaneously: ##EQU8## where I A1 is the first predetermined known current; P1 is the electromotive force of step (e); I A2 is the second predetermined known current; P2 is the second electromotive force of step (f); I A3 is the third predetermined known current; P3 is the third electromotive force of step (g); BC and BA are cathodic and anodic Tafel constants, respectively, which are both unknown; and I C is the corrosion current.
Claim 119
Dependent Claim
18 words
The process of claim 99 additionally comprising converting the corrosion current of step (h) into a corrosion rate.
Claim 120
Dependent Claim
242 words
A process for measuring the corrosion rates of metals in a corrosive liquid environment, comprising the steps of: (a) inserting a corrosion probe means into a corrosive liquid environment; (b) attaching electrically to a means for transmitting current, the corrosion probe means comprising in combination a first electrode means, a second electrode means, and a third electrode means; a dielectric means positioned between the first and second electrode means and between the second and the third electrode means; said dielectric means between the first and the second electrode means has an ionically conductive surface; and a predetermined known electromotive force between the first electrode means and an area in the surrounding corrosive liquid environment in general microscopic proximity thereto; (c) transmitting with said means for transmitting current a predetermined known current through the second electrode means, through the corrosive liquid environment, and through the third electrode means back to the means for transmitting current; (d) measuring simultaneously with step (c) the electromotive force between the first and second electrode means; (e) determining an electromotive force between the second electrode means and an area in the corrosive liquid environment in general microscopic proximity to the second electrode means by subtracting from the measured electromotive force of step (d) the predetermined known electromotive force of step (b); and (f) computing a corrosion current on the second electrode means from the determined electromotive force of step (e) and the predetermined known current of step (c).
Claim 121
Dependent Claim
242 words
A process for measuring the corrosion rates of metals in a corrosive liquid environment, comprising the steps of: (a) inserting a corrosion probe means into a corrosive liquid environment; (b) attaching electrically to a means for transmitting current, the corrosion probe means comprising in combination a first electrode means, a second electrode means, and a third electrode means; a dielectric means positioned between the first and second electrode means and between the second and the third electrode means; said dielectric means between the first and the second electrode means has an ionically conductive surface; and a predetermined known electromotive force between the first electrode means and an area in the surrounding corrosive liquid environment in general microscopic proximity thereto; (c) transmitting with said means for transmitting current a predetermined known current through the second electrode means, through the corrosive liquid environment, and through the third electrode means back to the means for transmitting current; (d) measuring simultaneously with step (c) the electromotive force between the first and second electrode means; (e) determining an electromotive force between the second electrode means and an area in the corrosive liquid environment in general microscopic proximity to the second electrode means by subtracting from the measured electromotive force of step (d) the predetermined known electromotive force of step (b); and (f) computing a corrosion current on the second electrode means from the determined electromotive force of step (e) and the predetermined known current of step (c).
Claim 122
Dependent Claim
57 words
The process of claim 102 wherein said computing step (f) includes the following equation: ##EQU9## where I A is the predetermined known applied current of step (c); BC is a known cathodic Tafel constant; BA is a known anodic Tafel constant; P is the determined electromotive force of step (e); and I C is the corrosion current.
Claim 123
Dependent Claim
18 words
The process of claim 102 additionally comprising converting the corrosion current of step (f) into a corrosion rate.
Claim 124
Dependent Claim
273 words
A process for measuring the corrosion rates of metals in a corrosive liquid environment, comprising the steps of: (a) inserting a corrosion probe means into a corrosive liquid environment; (b) attaching electrically to a means for transmitting current the corrosion probe means comprising in combination a first electrode means, a second electrode means, and a third electrode means; a dielectric means positioned between the first and second electrode means and between the second and third electrode means; said dielectric means between the first and the second electrode means has an ionically conductive surface; and a predetermined known electromotive known force between the first electrode means and an area in the surrounding corrsive liquid environment in general microscopic proximity thereto; (c) transmitting with said means for transmitting current a first predetermined known current through the second electrode means, through the corrosive liquid environment, and through the third electrode means back to the means for transmitting current; (d) measuring simultaneously with step (c) the electromotive force between the first and second electrode means; (e) determining an electromotive force between the second electrode means and an area in the corrosive liquid environment in general microscopic proximity to the second electrode means by subtracting from the measured electromotive force of step (d) the predetermined known electromotive force of step (b); (f) repeating steps (c) through (e) with a second predetermined known current to determine a second electromotive force; and (g) computing a corrosion current on the second electrode means from the electromotive force of step (e) and the first predetermined known current and from the second electromotive force of step (f) and the second predetermined known current.
Claim 125
Dependent Claim
273 words
A process for measuring the corrosion rates of metals in a corrosive liquid environment, comprising the steps of: (a) inserting a corrosion probe means into a corrosive liquid environment; (b) attaching electrically to a means for transmitting current the corrosion probe means comprising in combination a first electrode means, a second electrode means, and a third electrode means; a dielectric means positioned between the first and second electrode means and between the second and third electrode means; said dielectric means between the first and the second electrode means has an ionically conductive surface; and a predetermined known electromotive known force between the first electrode means and an area in the surrounding corrsive liquid environment in general microscopic proximity thereto; (c) transmitting with said means for transmitting current a first predetermined known current through the second electrode means, through the corrosive liquid environment, and through the third electrode means back to the means for transmitting current; (d) measuring simultaneously with step (c) the electromotive force between the first and second electrode means; (e) determining an electromotive force between the second electrode means and an area in the corrosive liquid environment in general microscopic proximity to the second electrode means by subtracting from the measured electromotive force of step (d) the predetermined known electromotive force of step (b); (f) repeating steps (c) through (e) with a second predetermined known current to determine a second electromotive force; and (g) computing a corrosion current on the second electrode means from the electromotive force of step (e) and the first predetermined known current and from the second electromotive force of step (f) and the second predetermined known current.
Claim 126
Dependent Claim
81 words
The process of claim 105 wherein said computing step (g) includes the following equations which are solved simultaneously: ##EQU10## where I A1 is the first predetermined known current; P1 is the first electromotive force of step (e); I A2 is the second predetermined known current; P2 is the second electromotive force of step (f); BC and BA are cathodic and anodic Tafel constants, respectively, wherein one is known and the other is an unknown; and I C is the corrosion current.
Claim 127
Dependent Claim
18 words
The process of claim 105 additionally comprising converting the corrosion current of step (g) into a corrosion rate.
Claim 128
Dependent Claim
306 words
A process for measuring the corrosion rates of metals in a corrosive liquid environment, comprising the steps of: (a) inserting a corrosion probe means into a corrosive liquid environment; (b) attaching electrically to a means for transmitting current the corrosion probe means comprising in combination a first electrode means, a second electrode means, and a third electrode means; a dielectric means positioned between the first and the second electrode means and between the second and the third electrode means; said dielectric means between the first and the second electrode means has an ionically conductive surface; and a predetermined known electromotive force between the first electrode means and an area in the surrouding corrosive liquid environment in general microscopic proximity thereto; (c) transmitting with said means for transmitting current a first predetermined known current through the second electrode means, through the corrosive liquid environment, and through the third electrode means back to the means for transmitting current; (d) measuring simultaneously with step (c) the electromotive force between the first and second electrode means; (e) determining an electromotive force between the second electrode means and an area in the corrosive liquid environment in general microscopic proximity to the second electrode means by subtracting from the measured electromotive force of step (d) the predetermined known electromotive force of step (b); (f) repeating steps (c) through (e) with a second predetermined known current to determine a second electromotive force; (g) repeating steps (c) through (e) with a third predetermined known current to determine a third electromotive force; and (h) computing a corrosion current on the second electrode means from the electromotive force of step (e) and the first predetermined known current, from the second electromotive force of step (f) and the second predetermined known current, and from the third electromotive force of step (g) and the third predetermined known current.
Claim 129
Dependent Claim
306 words
A process for measuring the corrosion rates of metals in a corrosive liquid environment, comprising the steps of: (a) inserting a corrosion probe means into a corrosive liquid environment; (b) attaching electrically to a means for transmitting current the corrosion probe means comprising in combination a first electrode means, a second electrode means, and a third electrode means; a dielectric means positioned between the first and the second electrode means and between the second and the third electrode means; said dielectric means between the first and the second electrode means has an ionically conductive surface; and a predetermined known electromotive force between the first electrode means and an area in the surrouding corrosive liquid environment in general microscopic proximity thereto; (c) transmitting with said means for transmitting current a first predetermined known current through the second electrode means, through the corrosive liquid environment, and through the third electrode means back to the means for transmitting current; (d) measuring simultaneously with step (c) the electromotive force between the first and second electrode means; (e) determining an electromotive force between the second electrode means and an area in the corrosive liquid environment in general microscopic proximity to the second electrode means by subtracting from the measured electromotive force of step (d) the predetermined known electromotive force of step (b); (f) repeating steps (c) through (e) with a second predetermined known current to determine a second electromotive force; (g) repeating steps (c) through (e) with a third predetermined known current to determine a third electromotive force; and (h) computing a corrosion current on the second electrode means from the electromotive force of step (e) and the first predetermined known current, from the second electromotive force of step (f) and the second predetermined known current, and from the third electromotive force of step (g) and the third predetermined known current.
Claim 130
Dependent Claim
92 words
The process of claim 108 wherein said computing step (h) includes the following equations which are solved simultaneously: ##EQU11## where I A1 is the first predetermined known current; P1 is the first electromotive force of step (e); I A2 is the second predetermined known current; P2 is the second electromotive force of step (g); I A3 is the third predetermined known current; P3 is the third electromotive force of step (g); BC and BA are cathodic and anodic Tafel constants, respectively, which are both unknown; and I C is the corrosion current.
Claim 131
Dependent Claim
18 words
The process of claim 108 additionally comprising converting the corrosion current of step (h) into a corrosion rate.
Claim 132
Dependent Claim
53 words
The process of claim 104 or 107 or 110 wherein said converting of the corrosion current into a corrosion rate comprises multiplying the corrosion current by a known conversion factor for the particular metal of the first electrode means upon which the corrosion rate in the corrosive liquid environment is to be determined.
Claim 133
Dependent Claim
80 words
A corrosion probe means utilized in measuring the corrosion rates of metals in a corrosive liquid environment comprising, in combination, at least one reference electrode; at least one counter electrode; at least two working electrodes; a dielectric means positioned between each of the reference electrodes and the working electrodes and between each of the working electrodes and the counter electrodes, and wherein said dielectric means between each of the reference electrodes and the working electrodes has an ionically conductive surface.
Claim 134
Dependent Claim
80 words
A corrosion probe means utilized in measuring the corrosion rates of metals in a corrosive liquid environment comprising, in combination, at least one reference electrode; at least one counter electrode; at least two working electrodes; a dielectric means positioned between each of the reference electrodes and the working electrodes and between each of the working electrodes and the counter electrodes, and wherein said dielectric means between each of the reference electrodes and the working electrodes has an ionically conductive surface.
Claim 135
Dependent Claim
25 words
The corrosion probe of claim 112 wherein said at least two working electrodes are each manufactured of a different metal with respect to each other.
Claim 136
Dependent Claim
133 words
A corrosion probe means utilized in measuring the corrosion rates of metals in a corrosive liquid environment, comprising in combination one reference electrode; one counter electrode; at least two working electrodes positioned between said reference electrode and said counter electrode with one of said working electrodes being adjacent to said reference electrode and another of said working electrodes being adjacent to the counter electrode; a dielectric means positioned between said reference electrode and said working electrode adjacent to said reference electrode, and between any two adjacent working electrodes, and between said counter electrode and said working electrode adjacent to said counter electrode; and wherein said dielectric means between said reference electrode and said working electrode adjacent to said reference electrode and between any two of said working electrodes has an ionically conductive surface.
Claim 137
Dependent Claim
133 words
A corrosion probe means utilized in measuring the corrosion rates of metals in a corrosive liquid environment, comprising in combination one reference electrode; one counter electrode; at least two working electrodes positioned between said reference electrode and said counter electrode with one of said working electrodes being adjacent to said reference electrode and another of said working electrodes being adjacent to the counter electrode; a dielectric means positioned between said reference electrode and said working electrode adjacent to said reference electrode, and between any two adjacent working electrodes, and between said counter electrode and said working electrode adjacent to said counter electrode; and wherein said dielectric means between said reference electrode and said working electrode adjacent to said reference electrode and between any two of said working electrodes has an ionically conductive surface.
Claim 138
Dependent Claim
25 words
The corrosion probe of claim 114 wherein said at least two working electrodes are each manufactured of a different metal with respect to each other.
Claim 139
Dependent Claim
111 words
A corrosion probe means utilized in measuring the corrosion rates of metals in a corrosive liquid environment comprising, in combination, a plurality of spaced-apart metal electrodes comprising at least one first electrode means, at least one second electrode means and at least one third electrode means, embedded in a dielectric insulating material; said electrodes having planar terminal ends aligned in a plane substantially transverse to the longitudinal axis of said electrodes; said dielectric insulating material being substantially flush with said planar terminal ends of said electrodes; and the facing of said dielectric insulating material between said first and said second electrodes at said planar ends thereof having an ionically conductive surface.
Claim 140
Dependent Claim
111 words
A corrosion probe means utilized in measuring the corrosion rates of metals in a corrosive liquid environment comprising, in combination, a plurality of spaced-apart metal electrodes comprising at least one first electrode means, at least one second electrode means and at least one third electrode means, embedded in a dielectric insulating material; said electrodes having planar terminal ends aligned in a plane substantially transverse to the longitudinal axis of said electrodes; said dielectric insulating material being substantially flush with said planar terminal ends of said electrodes; and the facing of said dielectric insulating material between said first and said second electrodes at said planar ends thereof having an ionically conductive surface.
Claim 141
Dependent Claim
83 words
A corrosion probe means utilized in measuring the corrosion rates of metals in a corrosive liquid environment comprising, in combination, a plurality of spaced-apart metallic electrodes comprising at least one first electrode, at least one second electrode and at least one third electrode, embedded in a dielectric insulating material; said metallic electrode and dielectric insulating material having a common terminal planar surface; and the terminal surface of said dielectric insulating material having an ionically conductive surface between said first and said second electrodes.
Claim 142
Dependent Claim
83 words
A corrosion probe means utilized in measuring the corrosion rates of metals in a corrosive liquid environment comprising, in combination, a plurality of spaced-apart metallic electrodes comprising at least one first electrode, at least one second electrode and at least one third electrode, embedded in a dielectric insulating material; said metallic electrode and dielectric insulating material having a common terminal planar surface; and the terminal surface of said dielectric insulating material having an ionically conductive surface between said first and said second electrodes.
Claim 143
Dependent Claim
104 words
A corrosion probe means utilized in measuring the corrosion rates of metals in a corrosive liquid environment comprising, in combination, a housing means having an open end means; a plurality of spaced-apart metallic electrodes comprising at least one first electrode, at least one second electrode and at least one third electrode, embedded in a dielectric insulating material in said housing means; said metallic electrodes and dielectric insulating material having a common terminal planar surface adjacent said open end means of said housing means; and the terminal surface of said dielectric insulating material having an ionically conductive surface between said first and said second electrodes.
Claim 144
Dependent Claim
104 words
A corrosion probe means utilized in measuring the corrosion rates of metals in a corrosive liquid environment comprising, in combination, a housing means having an open end means; a plurality of spaced-apart metallic electrodes comprising at least one first electrode, at least one second electrode and at least one third electrode, embedded in a dielectric insulating material in said housing means; said metallic electrodes and dielectric insulating material having a common terminal planar surface adjacent said open end means of said housing means; and the terminal surface of said dielectric insulating material having an ionically conductive surface between said first and said second electrodes.
Claim 145
Dependent Claim
121 words
A corrosion probe means utilized in measuring the corrosion rates of metals in a corrosive liquid environment comprising, in combination, a housing means having an open end means; a plurality of spaced-apart metallic electrodes comprising at least one working electrode made of a metal whose rate of corrosion in a given corrosive liquid environment is to be determined, at least one reference electrode and at least one counter electrode, embedded in a dielectric insulating material in said housing means; said metallic electrodes and dielectric insulating material having a common terminal planar surface adjacent said open end means of said housing means; the terminal surface of said dielectric insulating material having an ionically conductive surface between said first and said second electrodes.
Claim 146
Dependent Claim
121 words
A corrosion probe means utilized in measuring the corrosion rates of metals in a corrosive liquid environment comprising, in combination, a housing means having an open end means; a plurality of spaced-apart metallic electrodes comprising at least one working electrode made of a metal whose rate of corrosion in a given corrosive liquid environment is to be determined, at least one reference electrode and at least one counter electrode, embedded in a dielectric insulating material in said housing means; said metallic electrodes and dielectric insulating material having a common terminal planar surface adjacent said open end means of said housing means; the terminal surface of said dielectric insulating material having an ionically conductive surface between said first and said second electrodes.
Claim 147
Dependent Claim
113 words
A corrosion probe means utilized in measuring the corrosion rates of metals in a corrosive liquid environment comprising, in combination, a plurality of spaced-apart metallic electrodes comprising at least one first electrode, at least one second electrode and at least one third electrode, embedded in a dielectric insulating material; said metallic electrodes having planar terminal ends terminating in a common plane; said dielectric insulating material having a planar terminal surface between said electrodes parallel to and a finite distance removed from said common planar surface of said planar terminal ends of said electrodes; the terminal surface of said dielectric insulating material having an ionically conductive surface between said first and said second electrodes.
Claim 148
Dependent Claim
113 words
A corrosion probe means utilized in measuring the corrosion rates of metals in a corrosive liquid environment comprising, in combination, a plurality of spaced-apart metallic electrodes comprising at least one first electrode, at least one second electrode and at least one third electrode, embedded in a dielectric insulating material; said metallic electrodes having planar terminal ends terminating in a common plane; said dielectric insulating material having a planar terminal surface between said electrodes parallel to and a finite distance removed from said common planar surface of said planar terminal ends of said electrodes; the terminal surface of said dielectric insulating material having an ionically conductive surface between said first and said second electrodes.
Claim 149
Dependent Claim
134 words
A corrosion probe means utilized in measuring the corrosion rates of metals in a corrosive liquid environment comprising, in combination, a housing means having an open end means; a plurality of spaced-apart metallic electrodes comprising at least one first electrode, at least one second electrode and at least one third electrode, embedded in a dielectric insulating material in said housing means; said metallic electrodes having planar terminal ends terminating in a common plane adjacent to said open end means of said housing means; said dielectric insulating material having a planar terminal surface between said electrodes parallel to and a finite distance removed from said common plane of said planar terminal ends of said electrodes; the terminal surface of said dielectric insulating material having an ionically conductive surface between said first and said second electrodes.
Claim 150
Dependent Claim
134 words
A corrosion probe means utilized in measuring the corrosion rates of metals in a corrosive liquid environment comprising, in combination, a housing means having an open end means; a plurality of spaced-apart metallic electrodes comprising at least one first electrode, at least one second electrode and at least one third electrode, embedded in a dielectric insulating material in said housing means; said metallic electrodes having planar terminal ends terminating in a common plane adjacent to said open end means of said housing means; said dielectric insulating material having a planar terminal surface between said electrodes parallel to and a finite distance removed from said common plane of said planar terminal ends of said electrodes; the terminal surface of said dielectric insulating material having an ionically conductive surface between said first and said second electrodes.
Claim 151
Dependent Claim
151 words
A corrosion probe means utilized in measuring the corrosion rates of metals in a corrosive liquid environment comprising, in combination, a housing means having an open end means; a plurality of spaced-apart metallic electrodes comprising at least one working electrode made of a metal whose rate of corrosion in a given corrosive liquid environment is to be determined, at least one reference electrode and at least one counter electrode, embedded in a dielectric insulating material in said housing means; said metallic electrodes having planar terminal ends terminating in a common plane adjacent said open end means of said housing means; said dielectric insulating material having a planar terminal surface between said electrodes parallel to and a finite distance removed from said common plane of said planar terminal ends of said electrodes; the terminal surface of said dielectric insulating material having an ionically conductive surface between said first and said second electrodes.
Claim 152
Dependent Claim
151 words
A corrosion probe means utilized in measuring the corrosion rates of metals in a corrosive liquid environment comprising, in combination, a housing means having an open end means; a plurality of spaced-apart metallic electrodes comprising at least one working electrode made of a metal whose rate of corrosion in a given corrosive liquid environment is to be determined, at least one reference electrode and at least one counter electrode, embedded in a dielectric insulating material in said housing means; said metallic electrodes having planar terminal ends terminating in a common plane adjacent said open end means of said housing means; said dielectric insulating material having a planar terminal surface between said electrodes parallel to and a finite distance removed from said common plane of said planar terminal ends of said electrodes; the terminal surface of said dielectric insulating material having an ionically conductive surface between said first and said second electrodes.
Claim 153
Dependent Claim
127 words
A corrosion probe means utilized in measuring the corrosion rates of metals in a corrosive liquid environment comprising, in combination, a housing means having an open end means; a plurality of spaced-apart metallic electrodes comprising at least one working electrode made of a metal whose rate of corrosion in a given corrosive liquid environment is to be determined, at least one counter electrode and a reference electrode positioned in each space between a working electrode and a counter electrode, embedded in a dielectric insulating material in said housing means; said metallic electrodes and dielectric insulating material having a common terminal planar surface adjacent said open end means of said housing means; the terminal surface of said dielectric insulating material having an ionically conductive surface between said electrodes.
Claim 154
Dependent Claim
127 words
A corrosion probe means utilized in measuring the corrosion rates of metals in a corrosive liquid environment comprising, in combination, a housing means having an open end means; a plurality of spaced-apart metallic electrodes comprising at least one working electrode made of a metal whose rate of corrosion in a given corrosive liquid environment is to be determined, at least one counter electrode and a reference electrode positioned in each space between a working electrode and a counter electrode, embedded in a dielectric insulating material in said housing means; said metallic electrodes and dielectric insulating material having a common terminal planar surface adjacent said open end means of said housing means; the terminal surface of said dielectric insulating material having an ionically conductive surface between said electrodes.
Claim 155
Dependent Claim
102 words
A corrosion probe means utilized in measuring the corrosion rates of metals in a corrosive liquid environment, comprising in combination at least one working electrode containing N80 steel which is the electrode upon which the corrosion rate in the corrosive liquid environment is to be determined; at least one reference electrode containing N80 steel; at least one counter electrode containing 316 stainless steel; a dielectric means positioned between each working electrode and each reference electrode and between each reference electrode and each counter electrode, and wherein said dielectric means between each working electrode and each reference electrode has an ionically conductive surface.
Claim 156
Dependent Claim
102 words
A corrosion probe means utilized in measuring the corrosion rates of metals in a corrosive liquid environment, comprising in combination at least one working electrode containing N80 steel which is the electrode upon which the corrosion rate in the corrosive liquid environment is to be determined; at least one reference electrode containing N80 steel; at least one counter electrode containing 316 stainless steel; a dielectric means positioned between each working electrode and each reference electrode and between each reference electrode and each counter electrode, and wherein said dielectric means between each working electrode and each reference electrode has an ionically conductive surface.
Claim 157
Dependent Claim
147 words
A corrosion probe means utilized in measuring the corrosion rates of metals in a corrosive liquid environment, comprising in combination at least one working electrode containing N80 steel which is the electrode upon which the corrosion rate in the corrosive liquid environment is to be determined; at least one reference electrode containing N80 steel; at least one counter electrode containing 316 stainless steel; a dielectric means positioned between each working electrode and each reference electrode and between each reference electrode and each counter electrode, and wherein said dielectric means has an ionically conductive surface; each of said working, said reference, and said counter electrodes respectively terminates into a working electrode end, a reference electrode end, and a counter electrode and wherein each of said working, said reference, and said counter electrode ends comprises a structure generally defining a working, a reference and a counter rectangular edge, respectively.
Claim 158
Dependent Claim
147 words
A corrosion probe means utilized in measuring the corrosion rates of metals in a corrosive liquid environment, comprising in combination at least one working electrode containing N80 steel which is the electrode upon which the corrosion rate in the corrosive liquid environment is to be determined; at least one reference electrode containing N80 steel; at least one counter electrode containing 316 stainless steel; a dielectric means positioned between each working electrode and each reference electrode and between each reference electrode and each counter electrode, and wherein said dielectric means has an ionically conductive surface; each of said working, said reference, and said counter electrodes respectively terminates into a working electrode end, a reference electrode end, and a counter electrode and wherein each of said working, said reference, and said counter electrode ends comprises a structure generally defining a working, a reference and a counter rectangular edge, respectively.
Claim 159
Dependent Claim
69 words
The corrosion probe of claim 125 wherein said corrosion probe means comprises three working electrodes, four reference electrodes, and two counter electrodes; and said three working electrodes, said four reference electrodes, and said two counter electrodes are serially postured as follows: a working electrode, a reference electrode, a counter electrode; a reference electrode; a working electrode; a reference electrode; a counter electrode; a reference electrode; and a working electrode.
Claim 160
Independent Claim
203 words
An apparatus for measuring the corrosion rates of metals in a corrosive liquid environment, comprising in combination: (i) a corrosion probe means comprising in integral combination at least one first electrode means, at least one second electrode means, and at least one third electrode means; a dielectric means having an ionically conductive surface and positioned between the first electrode means and second electrode means and between the second electrode means and third electrode means; (ii) a potential change selecting means, electrically connected to said first electrode means and said second electrode means and said third electrode means, for selecting and maintaining a desired change in potential of the first electrode means with respect to the second electrode means by causing a current to flow in response to said selected desired change in potential through the first electrode means and the third electrode means, when all of said electrode means are in contact with said corrosive liquid environment, of a magnitude sufficient to effect said selected desired change in potential of the first electrode means with respect to the second electrode means; and (iii) current measuring means for measuring the magnitude of said current which was caused to flow through said first electrode means.
Claim 161
Independent Claim
203 words
An apparatus for measuring the corrosion rates of metals in a corrosive liquid environment, comprising in combination: (i) a corrosion probe means comprising in integral combination at least one first electrode means, at least one second electrode means, and at least one third electrode means; a dielectric means having an ionically conductive surface and positioned between the first electrode means and second electrode means and between the second electrode means and third electrode means; (ii) a potential change selecting means, electrically connected to said first electrode means and said second electrode means and said third electrode means, for selecting and maintaining a desired change in potential of the first electrode means with respect to the second electrode means by causing a current to flow in response to said selected desired change in potential through the first electrode means and the third electrode means, when all of said electrode means are in contact with said corrosive liquid environment, of a magnitude sufficient to effect said selected desired change in potential of the first electrode means with respect to the second electrode means; and (iii) current measuring means for measuring the magnitude of said current which was caused to flow through said first electrode means.
Claim 162
Independent Claim
153 words
An apparatus for measuring the corrosion rates of metals in a corrosive liquid environment, comprising in combination: (i) a corrosion probe means comprising in integral combination at least one first electrode means, at least one second electrode means, and at least one third electrode means; a dielectric means having an ionically conductive surface and positioned between the first electrode means and second electrode means and between the second electrode means and third electrode means; (ii) a current selecting means, electrically connected to said first electrode means and said second electrode means and said third electrode means, for selecting and maintaining a desired current flow through the first electrode means and the third electrode means, when all of said electrode means are in contact with said corrosive liquid environment; (iii) difference in potential measuring means for measuring the magnitude of a difference in potential between said first electrode means and said second electrode means.
Claim 163
Independent Claim
153 words
An apparatus for measuring the corrosion rates of metals in a corrosive liquid environment, comprising in combination: (i) a corrosion probe means comprising in integral combination at least one first electrode means, at least one second electrode means, and at least one third electrode means; a dielectric means having an ionically conductive surface and positioned between the first electrode means and second electrode means and between the second electrode means and third electrode means; (ii) a current selecting means, electrically connected to said first electrode means and said second electrode means and said third electrode means, for selecting and maintaining a desired current flow through the first electrode means and the third electrode means, when all of said electrode means are in contact with said corrosive liquid environment; (iii) difference in potential measuring means for measuring the magnitude of a difference in potential between said first electrode means and said second electrode means.
Claim 164
Dependent Claim
51 words
The apparatus of claim 127 or 128 wherein said first electrode means is a working electrode and the electrode upon which the corrosion rate in the corrosive liquid environment is to be determined; and said second electrode means is a reference electrode; and said third electrode means is a counter electrode.
Claim 165
Independent Claim
217 words
An apparatus for measuring the corrosion rates of metals in a corrosive liquid environment, comprising in combination: (i) a corrosion probe means comprising in integral combination at least one first electrode means, at least one second electrode means, and at least one third electrode means; a dielectric means positioned between the first electrode means and second electrode means and between the second electrode means and third electrode means, and wherein said dielectric means between said first electrode means and said second electrode means has an ionically conductive surface; (ii) a potential change selecting means, electrically connected to said first electrode means and said second electrode means and said third electrode means, for selecting and maintaining a desired change in potential of the second electrode means with respect to the first electrode means by causing a current to flow in response to said selected desired change in potential through the second electrode means and the third electrode means, when all of said electrode means are in contact with said corrosive liquid environment, of a magnitude sufficient to effect said selected desired change in potential of the second electrode means with respect to the first electrode means; and (iii) current measuring means for measuring the magnitude of said current which was caused to flow through said second electrode means.
Claim 166
Independent Claim
217 words
An apparatus for measuring the corrosion rates of metals in a corrosive liquid environment, comprising in combination: (i) a corrosion probe means comprising in integral combination at least one first electrode means, at least one second electrode means, and at least one third electrode means; a dielectric means positioned between the first electrode means and second electrode means and between the second electrode means and third electrode means, and wherein said dielectric means between said first electrode means and said second electrode means has an ionically conductive surface; (ii) a potential change selecting means, electrically connected to said first electrode means and said second electrode means and said third electrode means, for selecting and maintaining a desired change in potential of the second electrode means with respect to the first electrode means by causing a current to flow in response to said selected desired change in potential through the second electrode means and the third electrode means, when all of said electrode means are in contact with said corrosive liquid environment, of a magnitude sufficient to effect said selected desired change in potential of the second electrode means with respect to the first electrode means; and (iii) current measuring means for measuring the magnitude of said current which was caused to flow through said second electrode means.
Claim 167
Independent Claim
167 words
An apparatus for measuring the corrosion rates of metals in a corrosive liquid environment, comprising in combination: (i) a corrosion probe means comprising in integral combination at least one first electrode means, at least one second electrode means, and at least one third electrode means; a dielectric means positioned between the first electrode means and second electrode means and between the second electrode means and third electrode means, and wherein said dielectric means between said first electrode means and said second electrode means has an ionically conductive surface; (ii) a current selecting means, electrically connected to said first electrode means and said second electrode means and said third electrode means, for selecting and maintaining a desired current flow through the second electrode means and the third electrode means, when all of said electrode means are in contact with said corrosive liquid environment; (iii) difference in potential measuring means for measuring the magnitude of a difference in potential between the second electrode means and the first electrode means.
Claim 168
Independent Claim
167 words
An apparatus for measuring the corrosion rates of metals in a corrosive liquid environment, comprising in combination: (i) a corrosion probe means comprising in integral combination at least one first electrode means, at least one second electrode means, and at least one third electrode means; a dielectric means positioned between the first electrode means and second electrode means and between the second electrode means and third electrode means, and wherein said dielectric means between said first electrode means and said second electrode means has an ionically conductive surface; (ii) a current selecting means, electrically connected to said first electrode means and said second electrode means and said third electrode means, for selecting and maintaining a desired current flow through the second electrode means and the third electrode means, when all of said electrode means are in contact with said corrosive liquid environment; (iii) difference in potential measuring means for measuring the magnitude of a difference in potential between the second electrode means and the first electrode means.
Claim 169
Dependent Claim
51 words
The apparatus of claim 130 or 131 wherein said first electrode means is a reference electrode; and said second electrode means is a working electrode and the electrode upon which the corrosion rate in the corrosive liquid environment is to be determined; and said third electrode means is a counter electrode.
Claim 170
Independent Claim
138 words
An apparatus for measuring the corrosion rates of metals in a corrosive liquid environment, comprising in combination: (i) a corrosion probe means comprising in integral combination a first electrode means and a second electrode means; a dielectric means having an ionically conductive surface and positioned between the first electrode means and second electrode means; (ii) a current selecting means, electrically connected to said first electrode means and said second electrode means and a current conductive means, for selecting and maintaining a desired current flow through the second electrode means and the current conductive means, when all of said electrode means and said current conductive means are in contact with said corrosive liquid environment; (iii) difference in potential measuring means for measuring the magnitude of a difference in potential between the second electrode means and the first electrode means.
Claim 171
Independent Claim
138 words
An apparatus for measuring the corrosion rates of metals in a corrosive liquid environment, comprising in combination: (i) a corrosion probe means comprising in integral combination a first electrode means and a second electrode means; a dielectric means having an ionically conductive surface and positioned between the first electrode means and second electrode means; (ii) a current selecting means, electrically connected to said first electrode means and said second electrode means and a current conductive means, for selecting and maintaining a desired current flow through the second electrode means and the current conductive means, when all of said electrode means and said current conductive means are in contact with said corrosive liquid environment; (iii) difference in potential measuring means for measuring the magnitude of a difference in potential between the second electrode means and the first electrode means.
Claim 172
Independent Claim
188 words
An apparatus for measuring the corrosion rates of metals in a corrosive liquid environment, comprising in combination: (i) a corrosion probe means comprising in integral combination a first electrode means and a second electrode means; a dielectric means having an ionically conductive surface and positioned between the first electrode means and second electrode means; (ii) a potential change selecting means, electrically connected to said first electrode means and said second electrode means and a current conductive means, for selecting and maintaining a desired change in potential of the second electrode means with respect to the first electrode means by causing a current to flow in response to said selected desired change in potential through the second electrode means and the current conductive means, when all of said electrode means and said current conductive means are in contact with said corrosive liquid environment, of a magnitude sufficient to effect said selected desired change in potential of the second electrode means with respect to the first electrode means; and (iii) current measuring means for measuring the magnitude of said current which was caused to flow through said second electrode means.
Claim 173
Independent Claim
188 words
An apparatus for measuring the corrosion rates of metals in a corrosive liquid environment, comprising in combination: (i) a corrosion probe means comprising in integral combination a first electrode means and a second electrode means; a dielectric means having an ionically conductive surface and positioned between the first electrode means and second electrode means; (ii) a potential change selecting means, electrically connected to said first electrode means and said second electrode means and a current conductive means, for selecting and maintaining a desired change in potential of the second electrode means with respect to the first electrode means by causing a current to flow in response to said selected desired change in potential through the second electrode means and the current conductive means, when all of said electrode means and said current conductive means are in contact with said corrosive liquid environment, of a magnitude sufficient to effect said selected desired change in potential of the second electrode means with respect to the first electrode means; and (iii) current measuring means for measuring the magnitude of said current which was caused to flow through said second electrode means.
Claim 174
Dependent Claim
42 words
The apparatus of claim 133 or 134 wherein said first electrode means is a reference electrode; and said second electrode means is a working electrode and the electrode upon which the corrosion rate in the corrosive liquid environment is to be determined.
Claim 175
Dependent Claim
53 words
A corrosion probe means utilized in measuring the corrosion rates of metals in a corrosive liquid environment, comprising in combination a working electrode means; a counter electrode means; and a dielectric means positioned between the working electrode means and the counter electrode means, and wherein said dielectric means has an ionically conductive surface.
Claim 176
Dependent Claim
53 words
A corrosion probe means utilized in measuring the corrosion rates of metals in a corrosive liquid environment, comprising in combination a working electrode means; a counter electrode means; and a dielectric means positioned between the working electrode means and the counter electrode means, and wherein said dielectric means has an ionically conductive surface.
Claim 177
Dependent Claim
54 words
The corrosion probe of claim 129 wherein said working electrode means and said counter electrode means, respectively, terminate into a working electrode end means and a counter electrode end means, said working electrode end means and said counter electrode end means are substantially in a coplanar relationship between and with respect to each other.
Claim 178
Dependent Claim
29 words
The corrosion probe means of claim 136 wherein said working electrode means is the electrode upon which the corrosion rate in the corrosive liquid environment is to be determined.
Claim 179
Dependent Claim
510 words
A corrosion probe means utilized for measuring the corrosion rates of metals in a corrosive fluid environment, comprising in combination a first electrode means; a second electrode means; a sheath means; said first and second electrode means, respectively, terminate into a first and a second electrode end means which are substantially in a coplanar relationship among and with respect to each other; said sheath means terminates in a sheath end means that is generally coplanar with respect to the first and the second electrode end means so that said respective end means terminate in a common plane; a dielectric material positioned in and filling the space between the first and the second electrode means and between the second electrode means and the sheath means along at least a portion of said first and said second electrode means and said sheath means and extending away from said common plane, said dielectric material has an ionically conductive surface in said common plane between said first and said second electrode means; said first and the second electrode end means are positioned from about 0.01 inches to about 0.35 inches apart; a first depending conductor means attached to said first electrode means; a second depending conductor means connected to said second electrode means; said ionically conductive surface between the first and the second electrode means and said dielectric material between the second electrode end means and the sheath end means are generally in a substantially coplanar relationship among and with respect to each of the electrode end means and the sheath end means; said first electrode means has a solid cylindrical structure, said second electrode means comprises a cylindrical sleeve means circumferentially surrounding said first electrode means and concentrically positioned with respect thereto; said sheath means has a structure generally defining a cylindrical sleeve means circumferentially surrounding said second electrode means and concentrically positioned with respect to said first electrode means and said second electrode means; said sheath end means has a sheath opposed end means structurally opposed to said sheath end means; said first and said second electrode end means are, respectively, structurally opposed to a first and a second opposed electrode end means; said cylindrical sheath means has a greater length than said first electrode means and said second electrode means such that said sheath opposed end means is structurally disposed at a greater distance from said sheath end means than said first and said second opposed electrode end means are structurally disposed from said first and said second electrode end means, respectively, so as to provide a space within the inner cylindrical wall of the sheath means defined generally from the first and the second opposed electrode end means of said first electrode means and said second electrode means, respectively, and from the dielectric material positioned between the first and the second electrode means and between the second electrode means and the sheath means up to a space extremity that generally registers with the sheath opposed end means of said sheath means; and a retaining material positioned generally within said space.
Claim 180
Dependent Claim
510 words
A corrosion probe means utilized for measuring the corrosion rates of metals in a corrosive fluid environment, comprising in combination a first electrode means; a second electrode means; a sheath means; said first and second electrode means, respectively, terminate into a first and a second electrode end means which are substantially in a coplanar relationship among and with respect to each other; said sheath means terminates in a sheath end means that is generally coplanar with respect to the first and the second electrode end means so that said respective end means terminate in a common plane; a dielectric material positioned in and filling the space between the first and the second electrode means and between the second electrode means and the sheath means along at least a portion of said first and said second electrode means and said sheath means and extending away from said common plane, said dielectric material has an ionically conductive surface in said common plane between said first and said second electrode means; said first and the second electrode end means are positioned from about 0.01 inches to about 0.35 inches apart; a first depending conductor means attached to said first electrode means; a second depending conductor means connected to said second electrode means; said ionically conductive surface between the first and the second electrode means and said dielectric material between the second electrode end means and the sheath end means are generally in a substantially coplanar relationship among and with respect to each of the electrode end means and the sheath end means; said first electrode means has a solid cylindrical structure, said second electrode means comprises a cylindrical sleeve means circumferentially surrounding said first electrode means and concentrically positioned with respect thereto; said sheath means has a structure generally defining a cylindrical sleeve means circumferentially surrounding said second electrode means and concentrically positioned with respect to said first electrode means and said second electrode means; said sheath end means has a sheath opposed end means structurally opposed to said sheath end means; said first and said second electrode end means are, respectively, structurally opposed to a first and a second opposed electrode end means; said cylindrical sheath means has a greater length than said first electrode means and said second electrode means such that said sheath opposed end means is structurally disposed at a greater distance from said sheath end means than said first and said second opposed electrode end means are structurally disposed from said first and said second electrode end means, respectively, so as to provide a space within the inner cylindrical wall of the sheath means defined generally from the first and the second opposed electrode end means of said first electrode means and said second electrode means, respectively, and from the dielectric material positioned between the first and the second electrode means and between the second electrode means and the sheath means up to a space extremity that generally registers with the sheath opposed end means of said sheath means; and a retaining material positioned generally within said space.
Claim 181
Dependent Claim
463 words
A corrosion probe means utilized for measuring the corrosion rate of metals in a corrosive fluid environment, comprising in combination a first electrode means; a second electrode means; a third electrode means; a sheath means; a dielectric material positioned in and filling the space between the first and the second electrode means and between the second and the third electrode means and between said third electrode and the sheath means, said dielectric material has an ionically conductive surface; said first electrode means has a solid cylindrical structure, said second electrode means comprises a ring means circumferentially surrounding said first electrode means and concentrically positioned with respect thereto, and said third electrode means comprises a cylindrical sleeve means circumferentially surrounding said second electrode means and concentrically positioned with respect to said first electrode means and to said second electrode means; said sheath means terminates into a sheath end means; said sheath end means has a sheath opposed end means structurally opposed thereto; said first electrode means, said second electrode means, and said third electrode means, respectively, terminate in a first, a second and a third electrode end means; said dielectric material between said first and said second electrode means terminates in a first dielectric surface that is substantially in a coplanar relationship among and with respect to said first and said second electrode end means, said dielectric material between said second electrode means and said third electrode means terminates in a second dielectric surface that is substantially in a coplanar relationship among and with respect to said second and said third electrode means; said first, said second and said third electrode end means are, respectively, structurally opposed to a first, a second and a third opposed electrode end means; said sheath means has a greater length than said first cylinder electrode means, than said second and said third electrode means such that said sheath opposed end means is essentially disposed at a greater distance from said sheath end means than said first, said second and said third opposed electrode end means are structurally disposed from said first, said second and said third electrode end means, respectively, so that there is a space within the inner cylindrical wall of said sheath means generally between the first, the second and the third opposed electrode end means of said first cylinder electrode means, said second ring electrode means and said third cylindrical sleeve electrode means, respectively, and from the dielectric material positioned between the first and the second electrode means and between the second and the third electrode means and between the third electrode means and the sheath means up to a space extremity that generally registers with the sheath opposed end means of said sheath means; and a retaining material means positioned generally within said space.
Claim 182
Dependent Claim
463 words
A corrosion probe means utilized for measuring the corrosion rate of metals in a corrosive fluid environment, comprising in combination a first electrode means; a second electrode means; a third electrode means; a sheath means; a dielectric material positioned in and filling the space between the first and the second electrode means and between the second and the third electrode means and between said third electrode and the sheath means, said dielectric material has an ionically conductive surface; said first electrode means has a solid cylindrical structure, said second electrode means comprises a ring means circumferentially surrounding said first electrode means and concentrically positioned with respect thereto, and said third electrode means comprises a cylindrical sleeve means circumferentially surrounding said second electrode means and concentrically positioned with respect to said first electrode means and to said second electrode means; said sheath means terminates into a sheath end means; said sheath end means has a sheath opposed end means structurally opposed thereto; said first electrode means, said second electrode means, and said third electrode means, respectively, terminate in a first, a second and a third electrode end means; said dielectric material between said first and said second electrode means terminates in a first dielectric surface that is substantially in a coplanar relationship among and with respect to said first and said second electrode end means, said dielectric material between said second electrode means and said third electrode means terminates in a second dielectric surface that is substantially in a coplanar relationship among and with respect to said second and said third electrode means; said first, said second and said third electrode end means are, respectively, structurally opposed to a first, a second and a third opposed electrode end means; said sheath means has a greater length than said first cylinder electrode means, than said second and said third electrode means such that said sheath opposed end means is essentially disposed at a greater distance from said sheath end means than said first, said second and said third opposed electrode end means are structurally disposed from said first, said second and said third electrode end means, respectively, so that there is a space within the inner cylindrical wall of said sheath means generally between the first, the second and the third opposed electrode end means of said first cylinder electrode means, said second ring electrode means and said third cylindrical sleeve electrode means, respectively, and from the dielectric material positioned between the first and the second electrode means and between the second and the third electrode means and between the third electrode means and the sheath means up to a space extremity that generally registers with the sheath opposed end means of said sheath means; and a retaining material means positioned generally within said space.
Claim 183
Independent Claim
516 words
An apparatus for measuring the corrosion rates of metals in a corrosive fluid environment, comprising a first electrode means having a first depending conductor means attached thereto; a second electrode means having a second depending conductor means attached thereto; a dielectric means positioned between said first and said second electrode means, said dielectric means has an ionically conductive surface; a current conductive means having a third depending conductor means connected thereto; at least one means electrically engaged to said first, said second, and said third depending conductor means for transmitting current through said second electrode means, through the corrosive fluid environment, and through the current conductive means back to the means for transmitting current; and at least one means for measuring the difference in potential between the first electrode means and the second electrode means; said first electrode means has a cylindrical structure, said second electrode means has a general structure comprising a cylindrical sleeve means circumferentially surrounding said first electrode means and concentrically positioned with respect thereto; said first cylindrical electrode means has a diameter of from about 0.01 inches to about 0.25 inches; and said second electrode means has a thickness of from about 0.01 inches to about 0.25 inches; said first and said second electrode means, respectively, terminate into a first and a second electrode end means; said first and said second electrode end means and the said ionically conductive surface of said dielectric means are essentially in a coplanar relationship among and with respect to each other; said first and said second electrode end means are from about 0.01 inches to about 0.35 inches apart; a sheath means; said dielectric means is additionally positioned between said second electrode means and said sheath means; said sheath means terminates into a sheath end means that is substantially coplanar with respect to said first and said second electrode end means; said sheath means comprises a cylindrical sleeve means surrounding said first electrode means and said second electrode means; said sheath end means has a sheath opposed end means structurally opposed thereto; said first and said second electrode end means are, respectively, structurally opposed to a first and a second opposed electrode end means; said cylindrical sleeve means has a greater length than said first electrode means and than said second electrode means such that said sheath opposed end means is structurally disposed at a greater distance from said sheath end means than said first and said second opposed electrode end means are structurally disposed from said first and said second electrode end means, respectively, so that there is a space within the inner cylindrical wall of said sheath means defined generally from the first and the second opposed electrode end means of said first electrode means and of said second electrode means, respectively, and from the dielectric means positioned between the first and the second electrode means and between the second electrode means and the sheath means, up to a space extremity that generally registers with the sheath opposed end means of said sheath means; and a retaining material means positioned generally within said space.
Claim 184
Independent Claim
516 words
An apparatus for measuring the corrosion rates of metals in a corrosive fluid environment, comprising a first electrode means having a first depending conductor means attached thereto; a second electrode means having a second depending conductor means attached thereto; a dielectric means positioned between said first and said second electrode means, said dielectric means has an ionically conductive surface; a current conductive means having a third depending conductor means connected thereto; at least one means electrically engaged to said first, said second, and said third depending conductor means for transmitting current through said second electrode means, through the corrosive fluid environment, and through the current conductive means back to the means for transmitting current; and at least one means for measuring the difference in potential between the first electrode means and the second electrode means; said first electrode means has a cylindrical structure, said second electrode means has a general structure comprising a cylindrical sleeve means circumferentially surrounding said first electrode means and concentrically positioned with respect thereto; said first cylindrical electrode means has a diameter of from about 0.01 inches to about 0.25 inches; and said second electrode means has a thickness of from about 0.01 inches to about 0.25 inches; said first and said second electrode means, respectively, terminate into a first and a second electrode end means; said first and said second electrode end means and the said ionically conductive surface of said dielectric means are essentially in a coplanar relationship among and with respect to each other; said first and said second electrode end means are from about 0.01 inches to about 0.35 inches apart; a sheath means; said dielectric means is additionally positioned between said second electrode means and said sheath means; said sheath means terminates into a sheath end means that is substantially coplanar with respect to said first and said second electrode end means; said sheath means comprises a cylindrical sleeve means surrounding said first electrode means and said second electrode means; said sheath end means has a sheath opposed end means structurally opposed thereto; said first and said second electrode end means are, respectively, structurally opposed to a first and a second opposed electrode end means; said cylindrical sleeve means has a greater length than said first electrode means and than said second electrode means such that said sheath opposed end means is structurally disposed at a greater distance from said sheath end means than said first and said second opposed electrode end means are structurally disposed from said first and said second electrode end means, respectively, so that there is a space within the inner cylindrical wall of said sheath means defined generally from the first and the second opposed electrode end means of said first electrode means and of said second electrode means, respectively, and from the dielectric means positioned between the first and the second electrode means and between the second electrode means and the sheath means, up to a space extremity that generally registers with the sheath opposed end means of said sheath means; and a retaining material means positioned generally within said space.
Claim 185
Independent Claim
526 words
An apparatus for measuring the corrosion rates of metals in a corrosive fluid environment, comprising in combination a first electrode means having a first depending conductor means attached thereto; a second electrode means having a second depending conductor means bound thereto; a third electrode means having a third depending conductor means connected thereto; a dielectric material positioned between the first and the second electrode means and between the second and the third electrode means; said dielectric material has an ionically conductive surface; at least one means electrically engaged to said first, said second and said third depending conductor means for providing differences in potential between the second electrode and the first electrode means; at least one means for measuring current being conducted through the second electrode means, through the corrosive fluid environment, and through the third electrode means; said first electrode means comprises a cylindrical structure, said second electrode comprises a ring means circumferentially surrounding said first electrode means and concentrically positioned with respect thereto, and said third electrode means comprises a cylindrical sleeve means circumferentially surrounding said second electrode means and concentrically positioned with respect to said first electrode means and to second electrode means; said first cylinder electrode has a diameter of from about 0.01 inches to about 0.25 inches; and said second ring electrode means and said third cylindrical electrode means has a thickness of from about 0.01 inches to about 0.25 inches; said first, said second, and said third electrode means respectively, terminate into a first, a second, and a third electrode end means; said dielectric material between said first electrode means and said second electrode means terminates into a first dielectric surface having a first ionically conductive surface, said first and said second electrode end means and said first ionically conductive surface of said dielectric means between said first and said second electrode means are substantially in coplanar relationship among and with respect to each other; said first and said second electrode end means are from about 0.01 inches to about 0.35 inches apart; each of said first, said second, and said third electrode end means is, respectively, structurally opposed to a first, a second, and a third opposed electrode end means; said third electrode means has a greater length than said second electrode means and said first electrode means such that said third opposed electrode end means is structurally disposed at a greater distance from said third electrode end means than said second opposed electrode end means and said first opposed electrode end means are structurally disposed from said second electrode end means and said first electrode end means, respectively, so that there is a space within the inner cylindrical wall of said third electrode means defined generally from the first and second opposed electrode end means of said first electrode means and said second electrode means, respectively, and from the dielectric material positioned between the first and the second electrode means and between the second and third electrode means up to a space extremity that generally registers with the third opposed electrode end means of said third electrode means; and a retaining material means positioned generally within said space.
Claim 186
Independent Claim
526 words
An apparatus for measuring the corrosion rates of metals in a corrosive fluid environment, comprising in combination a first electrode means having a first depending conductor means attached thereto; a second electrode means having a second depending conductor means bound thereto; a third electrode means having a third depending conductor means connected thereto; a dielectric material positioned between the first and the second electrode means and between the second and the third electrode means; said dielectric material has an ionically conductive surface; at least one means electrically engaged to said first, said second and said third depending conductor means for providing differences in potential between the second electrode and the first electrode means; at least one means for measuring current being conducted through the second electrode means, through the corrosive fluid environment, and through the third electrode means; said first electrode means comprises a cylindrical structure, said second electrode comprises a ring means circumferentially surrounding said first electrode means and concentrically positioned with respect thereto, and said third electrode means comprises a cylindrical sleeve means circumferentially surrounding said second electrode means and concentrically positioned with respect to said first electrode means and to second electrode means; said first cylinder electrode has a diameter of from about 0.01 inches to about 0.25 inches; and said second ring electrode means and said third cylindrical electrode means has a thickness of from about 0.01 inches to about 0.25 inches; said first, said second, and said third electrode means respectively, terminate into a first, a second, and a third electrode end means; said dielectric material between said first electrode means and said second electrode means terminates into a first dielectric surface having a first ionically conductive surface, said first and said second electrode end means and said first ionically conductive surface of said dielectric means between said first and said second electrode means are substantially in coplanar relationship among and with respect to each other; said first and said second electrode end means are from about 0.01 inches to about 0.35 inches apart; each of said first, said second, and said third electrode end means is, respectively, structurally opposed to a first, a second, and a third opposed electrode end means; said third electrode means has a greater length than said second electrode means and said first electrode means such that said third opposed electrode end means is structurally disposed at a greater distance from said third electrode end means than said second opposed electrode end means and said first opposed electrode end means are structurally disposed from said second electrode end means and said first electrode end means, respectively, so that there is a space within the inner cylindrical wall of said third electrode means defined generally from the first and second opposed electrode end means of said first electrode means and said second electrode means, respectively, and from the dielectric material positioned between the first and the second electrode means and between the second and third electrode means up to a space extremity that generally registers with the third opposed electrode end means of said third electrode means; and a retaining material means positioned generally within said space.
Claim 187
Dependent Claim
95 words
A process for measuring the corrosion rates of metals in a corrosive medium, comprising contacting a corrosive medium with a corrosion probe means having an ionically conductive surface; and selecting and maintaining a desired change in potential of a first electrode means of the corrosion probe means with respect to a second electrode means of the corrosion probe means by causing a current to flow through the first electrode in response to the selected desired change in potential; and measuring the magnitude of the current which was caused to flow through the first electrode means.
Claim 188
Dependent Claim
95 words
A process for measuring the corrosion rates of metals in a corrosive medium, comprising contacting a corrosive medium with a corrosion probe means having an ionically conductive surface; and selecting and maintaining a desired change in potential of a first electrode means of the corrosion probe means with respect to a second electrode means of the corrosion probe means by causing a current to flow through the first electrode in response to the selected desired change in potential; and measuring the magnitude of the current which was caused to flow through the first electrode means.
Claim 189
Dependent Claim
14 words
The process of claim 143 wherein said corrosive medium is a corrosive liquid environment.
Claim 190
Independent Claim
94 words
An apparatus for measuring the corrosive rate of metals, in a corrosive liquid environment, comprising a first electrode means; a second electrode means; a dielectric means positioned between the first electrode means and the second electrode means, said dielectric means having an ionically conductive surface; and at least one means electrically engaged to said first electrode means and said second electrode means for maintaining a difference in potential between the first electrode means and the second electrode means; and at least one means for measuring the current being conducted through the first electrode means.
Claim 191
Independent Claim
94 words
An apparatus for measuring the corrosive rate of metals, in a corrosive liquid environment, comprising a first electrode means; a second electrode means; a dielectric means positioned between the first electrode means and the second electrode means, said dielectric means having an ionically conductive surface; and at least one means electrically engaged to said first electrode means and said second electrode means for maintaining a difference in potential between the first electrode means and the second electrode means; and at least one means for measuring the current being conducted through the first electrode means.
Claim 192
Dependent Claim
39 words
The apparatus of claim 145 additionally comprising a current conductive means, and said means for measuring the current measures the current being conducted through the first electrode means, through the corrosive liquid environment, and through the current conductive means.
Claim 193
Dependent Claim
15 words
The apparatus of claim 146 wherein said current conductive means comprises a third electrode means.
Claim 194
Dependent Claim
69 words
The apparatus of claim 147 wherein said dielectric means is positioned between said third electrode means and said first electrode means such that said first electrode means is between said second electrode means and said third electrode means, said ionically conductive surface of said dielectric means is between said first electrode means and said second electrode means and not between said first electrode means and said third electrode means.
Claim 195
Dependent Claim
152 words
A process for measuring the corrosion rates of metals in a corrosive liquid environment, comprising the steps of: (a) embedding in a dielectric means having a dielectric end at least one first electrode means having a first electrode end and at least one second electrode means having a second electrode end such that the first electrode end and the second electrode end are substantially in a coplaner relationship among and with respect to said dielectric end which is positioned between the first electrode end and the second electrode end to separate the same; (b) treating said dielectric end to become ionically conductive; (c) contacting a corrosive liquid environment with said ionically conductive dielectric end; (d) maintaining a difference in potential between the first electrode means and the second electrode means; (e) measuring the current being conducted through the first electrode means; and (f) determining a corrosion current on the first electrode means.
Claim 196
Dependent Claim
152 words
A process for measuring the corrosion rates of metals in a corrosive liquid environment, comprising the steps of: (a) embedding in a dielectric means having a dielectric end at least one first electrode means having a first electrode end and at least one second electrode means having a second electrode end such that the first electrode end and the second electrode end are substantially in a coplaner relationship among and with respect to said dielectric end which is positioned between the first electrode end and the second electrode end to separate the same; (b) treating said dielectric end to become ionically conductive; (c) contacting a corrosive liquid environment with said ionically conductive dielectric end; (d) maintaining a difference in potential between the first electrode means and the second electrode means; (e) measuring the current being conducted through the first electrode means; and (f) determining a corrosion current on the first electrode means.
Claim 197
Dependent Claim
19 words
The process of claim 149 wherein said treating step (b) comprises etching chemically the surface of said dielectric end.
Claim 198
Dependent Claim
22 words
The process of claim 149 wherein said treating step (b) comprises embedding ionically conductive means in the surface of said dielectric end.
Claim 199
Dependent Claim
26 words
The process of claim 149 wherein said treating step (b) comprises contacting the dielectric end with a surfactant capable of rendering the dielectric end ionically conductive.
Claim 200
Dependent Claim
69 words
A process for measuring the corrosion rates of metals in a corrosive medium, comprising contacting a corrosive medium with a corrosion probe means having an ionically conductive surface; selecting and maintaining a desired current flow through a first electrode means of the corrosion probe means; and measuring the magnitude of a difference in potential between the first electrode means and a second electrode means of the corrosion probe means.
Claim 201
Dependent Claim
69 words
A process for measuring the corrosion rates of metals in a corrosive medium, comprising contacting a corrosive medium with a corrosion probe means having an ionically conductive surface; selecting and maintaining a desired current flow through a first electrode means of the corrosion probe means; and measuring the magnitude of a difference in potential between the first electrode means and a second electrode means of the corrosion probe means.
Claim 202
Dependent Claim
14 words
The process of claim 143 wherein said corrosive medium is a corrosive liquid environment.
Claim 203
Dependent Claim
18 words
The process of claim 144 or 154 wherein said corrosive liquid environment comprises brine suspended in liquid hydrocarbon.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-06-21 | 1991-12-21 | 1992-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-06-21 | 1995-12-21 | 1996-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-06-21 | 1999-12-21 | 2000-06-21 | $7700.00 | Window Closed / Lapsed |