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US4767678A
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Corrosion resistant magnesium and aluminum oxalloys
Assignee: Dow Chemical Co
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Filing: 1986-02-18
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Granted: 1988-08-30
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Expires: 2006-02-18
Abstract
Abstract The invention is an oxalloy consisting essentially of about 5 to about 57 weight percent magnesium or aluminum and about 0.5 to about 10 weight percent of one or more alloying materials selected from the group consisting of B, Al, Si, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Ge, As, Zr, Nb, Mo, Ru, Rh, Pd, Ag, Cd, Ga, In, Sn, Sb, Hf, Ta, W, Re, Os, Ir, Pt, Au, Tl, Pb, Bi, Th, and rare earths; and the remainder oxygen. The invention also includes a method for forming the above oxalloys and a substrate coated with the oxalloys of the present invention.
Inventors
- 👤 Ronald L. Yates
- 👤 Patrick L. Hagans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 12:38
CPC Classifications
C; C23; C23C; C23C26/00; C23C26/02; C23C30/00; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12535; Y10T428/12611; Y10T428/1266; Y10T428/12667; Y10T428/12729; Y10T428/12736
Claims Analysis
Total Claims: 30
Claim 1
Independent Claim
77 words
An oxalloy consisting essentially of about 5 to about 57 weight percent magnesium or aluminum; about 0.5 to about 10 weight percent of one or more alloying materials selected from the group consisting of B, Si, Ti, V, Mn, Fe, Co, Ni, Cu, Zn, Ge, As, Zr, Nb, Mo, Ru, Rh, Pd, Ag, Cd, In, Sn, Sb, Hf, Ta, W, Re, Os, Ir, Pt, Au, Tl, Pb, Bi, Th, Ga, and rare earths; and the remainder oxygen.
Claim 2
Dependent Claim
77 words
An oxalloy consisting essentially of about 5 to about 57 weight percent magnesium or aluminum; about 0.5 to about 10 weight percent of one or more alloying materials selected from the group consisting of B, Si, Ti, V, Mn, Fe, Co, Ni, Cu, Zn, Ge, As, Zr, Nb, Mo, Ru, Rh, Pd, Ag, Cd, In, Sn, Sb, Hf, Ta, W, Re, Os, Ir, Pt, Au, Tl, Pb, Bi, Th, Ga, and rare earths; and the remainder oxygen.
Claim 3
Dependent Claim
77 words
An oxalloy consisting essentially of about 5 to about 57 weight percent magnesium; about 0.5 to about 10 weight percent of one or more alloying materials selected from the group consisting of B, Al, Si, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Ge, As, Zr, Nb, Mo, Ru, Rh, Pd, Ag, Cd, In, Sn, Sb, Hf, Ta, W, Re, Os, Ir, Pt, Au, Tl, Pb, Bi, Th, Ga, or rare earths; and the remainder oxygen.
Claim 4
Dependent Claim
77 words
An oxalloy consisting essentially of about 5 to about 57 weight percent magnesium; about 0.5 to about 10 weight percent of one or more alloying materials selected from the group consisting of B, Al, Si, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Ge, As, Zr, Nb, Mo, Ru, Rh, Pd, Ag, Cd, In, Sn, Sb, Hf, Ta, W, Re, Os, Ir, Pt, Au, Tl, Pb, Bi, Th, Ga, or rare earths; and the remainder oxygen.
Claim 5
Dependent Claim
74 words
An oxalloy consisting essentially of about 5 to about 32 weight percent aluminum; about 0.5 to about 10 weight percent of one or more alloying materials selected from the group consisting of B, Si, Ti, V, Mn, Fe, Co, Ni, Cu, Zn, Ge, As, Zr, Nb, Mo, Ru, Rh, Pd, Ag, Cd, In, Sn, Sb, Hf, Ta, W, Re, Os, Ir, Pt, Au, Tl, Pb, Bi, Th, Ga, and rare earths; the remainder oxygen.
Claim 6
Dependent Claim
74 words
An oxalloy consisting essentially of about 5 to about 32 weight percent aluminum; about 0.5 to about 10 weight percent of one or more alloying materials selected from the group consisting of B, Si, Ti, V, Mn, Fe, Co, Ni, Cu, Zn, Ge, As, Zr, Nb, Mo, Ru, Rh, Pd, Ag, Cd, In, Sn, Sb, Hf, Ta, W, Re, Os, Ir, Pt, Au, Tl, Pb, Bi, Th, Ga, and rare earths; the remainder oxygen.
Claim 7
Dependent Claim
34 words
The oxalloy of claim 2 wherein the alloying material is a material selected from the group consisting of B, Al, Si, Ti, V, Cr, Fe, Ni, Cu, Zn, Nb, Mo, Ag, Au, and Pb.
Claim 8
Dependent Claim
22 words
The oxalloy of claim 2 wherein the alloying material is a metal selected from the group consisting of Fe, Ni, and Cu.
Claim 9
Dependent Claim
13 words
The oxalloy of claim 2 wherein the magnesium is an alloy of magnesium.
Claim 10
Dependent Claim
12 words
The oxalloy of claim 3 wherein aluminum is an alloy of aluminum.
Claim 11
Dependent Claim
14 words
The oxalloy of claim 2 wherein the magnesium is an oxide-containing salt of magnesium.
Claim 12
Dependent Claim
10 words
The oxalloy of claim 1 wherein the oxalloy is amorphous.
Claim 13
Dependent Claim
10 words
The oxalloy of claim 1 wherein the oxalloy is crystalline.
Claim 14
Dependent Claim
10 words
The oxalloy of claim 2 wherein the oxalloy is amorphous.
Claim 15
Dependent Claim
10 words
The oxalloy of claim 2 wherein the oxalloy is crystalline.
Claim 16
Dependent Claim
16 words
The oxalloy of claim 2 wherein it has a pitting potential more positive than -0.4 volt.
Claim 17
Dependent Claim
16 words
The oxalloy of claim 2 wherein it has a pitting potential more positive than 0.0 volt.
Claim 18
Dependent Claim
16 words
The oxalloy of claim 3 wherein it has a pitting potential more positive than 0.25 volt.
Claim 19
Dependent Claim
16 words
The oxalloy of claim 3 wherein it has a pitting potential more positive than +0.5 volt.
Claim 20
Dependent Claim
15 words
The oxalloy of claim 1 wherein the oxygen is provided from an oxide of magnesium.
Claim 21
Dependent Claim
16 words
The oxalloy of claim 1 wherein the oxygen is provided from an oxide-containing salt of magnesium.
Claim 22
Dependent Claim
103 words
An improved corrosion resistant substrate of the type having a corrosion resistant oxalloy on at least a portion of its surface; wherein the improvement comprises: the oxalloy being an oxalloy having about 5 to about 57 weight percent magnesium or aluminium; and about 0.5 to about 10 weight percent of one or more alloying materials selected from the group consisting of B, Si, Ti, V, Mn, Fe, Co, Ni, Cu, Zn, Ge, As, Zr, Nb, Mo, Ru, Rh, Pd, Ag, Cd, In, Sn, Sb, Hf, Ta, W, Re, Os, Ir, Pt, Au, Tl, Pb, Bi, Th, and rare earths; and the remainder oxygen.
Claim 23
Dependent Claim
103 words
An improved corrosion resistant substrate of the type having a corrosion resistant oxalloy on at least a portion of its surface; wherein the improvement comprises: the oxalloy being an oxalloy having about 5 to about 57 weight percent magnesium or aluminium; and about 0.5 to about 10 weight percent of one or more alloying materials selected from the group consisting of B, Si, Ti, V, Mn, Fe, Co, Ni, Cu, Zn, Ge, As, Zr, Nb, Mo, Ru, Rh, Pd, Ag, Cd, In, Sn, Sb, Hf, Ta, W, Re, Os, Ir, Pt, Au, Tl, Pb, Bi, Th, and rare earths; and the remainder oxygen.
Claim 24
Dependent Claim
103 words
An improved corrosion resistant substrate of the type having a corrosion resistant oxalloy on at least a portion of its surface; wherein the improvement comprises: the oxalloy being an oxalloy having about 5 to about 57 weight percent magnesium and; about 0.5 to about 10 weight percent one or more alloying materials selected from the group consisting of B, Al, Si, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Ge, As, Zr, Nb, Mo, Ru, Rh, Pd, Ag, Cd, In, Sn, Sb, Hf, Ta, W, Re, Os, Ir, Pt, Au, Tl, Pb, Bi, Th, Ga, and rare earths; and the remainder oxygen.
Claim 25
Dependent Claim
103 words
An improved corrosion resistant substrate of the type having a corrosion resistant oxalloy on at least a portion of its surface; wherein the improvement comprises: the oxalloy being an oxalloy having about 5 to about 57 weight percent magnesium and; about 0.5 to about 10 weight percent one or more alloying materials selected from the group consisting of B, Al, Si, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Ge, As, Zr, Nb, Mo, Ru, Rh, Pd, Ag, Cd, In, Sn, Sb, Hf, Ta, W, Re, Os, Ir, Pt, Au, Tl, Pb, Bi, Th, Ga, and rare earths; and the remainder oxygen.
Claim 26
Dependent Claim
36 words
The substrate of claim 20 wherein the alloying material is selected from the group of alloying material consisting of B, Al, Si, Ti, V, Cr, Fe, Ni, Cu, Zn, Zr, Nb, Mo, Ag, Au, and Pb.
Claim 27
Dependent Claim
101 words
An improved corrosion resistant substrate of the type having a corrosion resistant oxalloy on at least a portion of its surface; wherein the improvement comprises: the oxalloy being an oxalloy having about 5 to about 32 weight percent aluminum; and about 0.5 to about 10 weight percent of one or more materials selected from the group consisting of B, Si, Ti, V, Mn, Fe, Co, Ni, Cu, Zn, Ge, As, Zr, Nb, Mo, Ru, Rh, Pd, Ag, Cd, In, Sn, Sb, Hf, Ta, W, Re, Os, Ir, Pt, Au, Tl, Pb, Bi, Th, Ga, and rare earths; and the remainder oxygen.
Claim 28
Dependent Claim
101 words
An improved corrosion resistant substrate of the type having a corrosion resistant oxalloy on at least a portion of its surface; wherein the improvement comprises: the oxalloy being an oxalloy having about 5 to about 32 weight percent aluminum; and about 0.5 to about 10 weight percent of one or more materials selected from the group consisting of B, Si, Ti, V, Mn, Fe, Co, Ni, Cu, Zn, Ge, As, Zr, Nb, Mo, Ru, Rh, Pd, Ag, Cd, In, Sn, Sb, Hf, Ta, W, Re, Os, Ir, Pt, Au, Tl, Pb, Bi, Th, Ga, and rare earths; and the remainder oxygen.
Claim 29
Dependent Claim
19 words
The corrosion resistant substrate of claim 20 wherein the oxalloy has a thickness of less than about 30,000 angstroms.
Claim 30
Dependent Claim
19 words
The corrosion resistant substrate of claim 20 wherein the oxalloy has a thickness of less than about 3,000 angstroms.
References Cited (Backward Citations)
US4401726A
Cited
US4613386A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1991-08-30 | 1992-02-29 | 1992-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-08-30 | 1996-02-29 | 1996-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-08-30 | 2000-02-29 | 2000-08-30 | $7700.00 | Window Closed / Lapsed |