US3876473A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of fabricating a composite intermetallic-type superconductor
Assignee: Imperial Metal Industries Kynoch Ltd
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Filing: 1974-01-08
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Granted: 1975-04-08
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Expires: 1994-01-08
Abstract
Abstract In a method of manufacturing a superconductor of intermetallic compound which includes the steps of forming an assembly of one component of the eventually intermetallic superconductive compound surrounded by and in intimate contact with a nonsuperconductive material and diffusing the remaining component of the compound through the non-superconductive material, the improvement which comprises providing a selective diffusion barrier between the one component and the non-superconductive material to substantially block the passage of the nonsuperconductive material into the one component.
Inventors
- 👤 Ian Leitch Mcdougall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:26
CPC Classifications
H; H10; H10N; H10N60/00; H10N60/01; H10N60/0184; Y; Y10; Y10S; Y10S505/00; Y10S505/80; Y10S505/815; Y10S505/818; Y10S505/821; Y10S505/825; Y10S505/917; Y10S505/918; Y10S505/919; Y10S505/92; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49014
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
167 words
A METHOD OF MANUFACTURING A SUPERCONDUCTOR OF AN INTERMETALLIC COMPOUND WHICH INCLUDES THE STEPS OF: I. FORMING AN ASSEMBLY OF A. AT LEAST ONE COMPONENT OF AN EVENTUAL INTERMETALLIC SUPERCONDUCTIVE COMPOUND, B. SAID AT LEAST ONE COMPONENT BEING SURROUNDED BY AND IN INTIMATE CONTACT WITH A STABILISING MATERIAL NONSUPERCONDUCTIVE AT 4.2*K, C. THERE BEING A SELECTIVE DIFFUSION BARRIER BETWEEN THE AT LEAST ONE COMPONENT AND THE NON-SUPERCONDUCTIVE STABILISING MATERIAL; II. PROVIDING THE REMAINING COMPONENT OR COMPONENTS IN THE STABILISING MATERIAL; III. THEN HEATING THE ASSEMBLY IN ORDER TO DIFFUSE THE REMAINING COMPONENT OR COMPONENTS THROUGH THE STABILISING MATERIAL AND THROUGH THE SELECTIVE DIFFUSION BARRIER, THE SELECTIVE DIFFUSION BARRIER SUBSTANTIALLY BLOCKING THE PASSAGE OF THE STABILISING MATERIAL INTO THE AT LEAST ONE COMPONENT; AND SUBSEQUENTLY IV. HEAT TREATING THE ASSEMBLY TO REACT THE REMAINING COMPONENT OR COMPONENTS WITH THE ONE COMPONENT TO FORM THE INTERMETALLIC COMPOUND, THE REMAINING COMPONENT OR COMPONENTS BEING THE MORE REACTIVE METAL UNDER THE HEAT TREATMENT CONDITIONS AND FOR THE COMPOSITION PREVAILING DURING REACTION.
Claim 2
Independent Claim
167 words
A METHOD OF MANUFACTURING A SUPERCONDUCTOR OF AN INTERMETALLIC COMPOUND WHICH INCLUDES THE STEPS OF: I. FORMING AN ASSEMBLY OF A. AT LEAST ONE COMPONENT OF AN EVENTUAL INTERMETALLIC SUPERCONDUCTIVE COMPOUND, B. SAID AT LEAST ONE COMPONENT BEING SURROUNDED BY AND IN INTIMATE CONTACT WITH A STABILISING MATERIAL NONSUPERCONDUCTIVE AT 4.2*K, C. THERE BEING A SELECTIVE DIFFUSION BARRIER BETWEEN THE AT LEAST ONE COMPONENT AND THE NON-SUPERCONDUCTIVE STABILISING MATERIAL; II. PROVIDING THE REMAINING COMPONENT OR COMPONENTS IN THE STABILISING MATERIAL; III. THEN HEATING THE ASSEMBLY IN ORDER TO DIFFUSE THE REMAINING COMPONENT OR COMPONENTS THROUGH THE STABILISING MATERIAL AND THROUGH THE SELECTIVE DIFFUSION BARRIER, THE SELECTIVE DIFFUSION BARRIER SUBSTANTIALLY BLOCKING THE PASSAGE OF THE STABILISING MATERIAL INTO THE AT LEAST ONE COMPONENT; AND SUBSEQUENTLY IV. HEAT TREATING THE ASSEMBLY TO REACT THE REMAINING COMPONENT OR COMPONENTS WITH THE ONE COMPONENT TO FORM THE INTERMETALLIC COMPOUND, THE REMAINING COMPONENT OR COMPONENTS BEING THE MORE REACTIVE METAL UNDER THE HEAT TREATMENT CONDITIONS AND FOR THE COMPOSITION PREVAILING DURING REACTION.
Claim 3
Dependent Claim
44 words
A method as in claim 1 wherein the non-superconductive metal is selected from the group consisting of copper, silver, nickel plus copper, magnesium and iron and wherein the selective diffusion barrier is selected from the group consisting of tantalum, niobium, zirconium plus tantalum, hafnium
Claim 4
Dependent Claim
25 words
A method as claimed in claim 1 in which the remaining component or components are added to the outside of the assembly and diffused through.
Claim 5
Dependent Claim
23 words
A method as claimed in claim 1 in which the remaining component or components are incorporated in the non-superconductive material to form an
Claim 6
Dependent Claim
25 words
A method as claimed in claim 3 in which the remaining component or components are added to the outside in a first operation and diffused
Claim 7
Dependent Claim
13 words
A method as claimed in claim 1 in which the selective diffusion barrier
Claim 8
Dependent Claim
13 words
A method as claimed in claim 1 in which the selective diffusion barrier
Claim 9
Dependent Claim
17 words
A method as claimed in claim 1 in which the assembly is in the form of a
Claim 10
Dependent Claim
14 words
A method as claimed in claim 8 in which the assembly is elongated prior
Claim 11
Dependent Claim
24 words
A method as claimed in claim 9 in which the elongation is carried out at elevated temperatures lower than the temperature of said heat
Claim 12
Dependent Claim
28 words
A method as claimed in claim 1 in which the heat treatment to provide diffusion is carried out at such a temperature that none of the metals or
Claim 13
Dependent Claim
27 words
A method as claimed in claim 4 in which the heat treatment to provide diffusion is carried out at a temperature above the melting point of the
Claim 14
Dependent Claim
14 words
A method as claimed in claim 12 in which the solid component is the
Claim 15
Dependent Claim
15 words
A method as claimed in claim 4 in which the at least one component is
Claim 16
Dependent Claim
14 words
A method as claimed in claim 4 in which the at least one component
Claim 17
Dependent Claim
12 words
A method as claimed in claim 1 in which the conductor incorporates
Claim 18
Dependent Claim
26 words
A method as claimed in claim 16 in which the additional material is included as cores of filaments of the remainder of the components of the
Claim 19
Dependent Claim
14 words
A method as claimed in claim 16 in which the conductor is cabled with
Claim 20
Dependent Claim
23 words
A method as claimed in claim 1 in which the conductor is reinforced with reinforcing filaments or by being cabled with reinforcing filaments.
References Cited (Backward Citations)
US3665595A
Cited
US3813764A
Cited
US3728165A
Cited
US3625662A
Cited
US3778894A
Cited
US3731374A
Cited
US3807041A
Cited
US3737824A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-04-07 | 1978-10-07 | 1979-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-04-07 | 1982-10-07 | 1983-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-04-07 | 1986-10-07 | 1987-04-08 | $7700.00 | Window Closed / Lapsed |