Patent US4043028A successfully refreshed from Google Patents.
US4043028A
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Method of fabricating composite superconductors
Assignee: SWCC Corp
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Filing: 1976-05-10
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Granted: 1977-08-23
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Expires: 1996-05-10
Abstract
Abstract A method of making stabilized superconductors of a composition such as Nb 3 Sn is disclosed. The method includes forming a stock product comprising a tin base alloy as a core with a copper jacket and having a niobium tube clad thereon. The stock product is then embedded in a good thermally and electrically conducting matrix which is then coreduced until the desired size is obtained. This cold worked product is then submitted to a heat treatment to form superconductors of Nb 3 Sn.
Inventors
- 👤 Yoshiyasu Koike
- 👤 Hachio Shiraki
- 👤 Eigen Suzuki
- 👤 Makoto Yoshida
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 09:41
CPC Classifications
H; H10; H10N; H10N60/00; H10N60/01; H10N60/0184; Y; Y10; Y10S; Y10S505/00; Y10S505/825; Y10S505/917; Y10S505/918; Y10S505/919; Y10S505/921; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49014
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
74 words
A method of fabricating composite superconductors comprising the steps of: forming a stock product comprising a tin based alloy core surrounded by a copper jacket which is cladded with a niobium tube; embedding at least one of said stock products in a good thermal and electrical matrix in order to make a composite structure; coreducing said composite structure until a desired size is obtained; and, submitting said coreduced composite structure to a heat treatment.
Claim 2
Independent Claim
74 words
A method of fabricating composite superconductors comprising the steps of: forming a stock product comprising a tin based alloy core surrounded by a copper jacket which is cladded with a niobium tube; embedding at least one of said stock products in a good thermal and electrical matrix in order to make a composite structure; coreducing said composite structure until a desired size is obtained; and, submitting said coreduced composite structure to a heat treatment.
Claim 3
Dependent Claim
41 words
A method as in claim 1 in which said step of submitting includes the step of: heat treating said composite structure at a temperature in the range from 600° to 750° C for a period of between 2 and 100 hours.
Claim 4
Dependent Claim
39 words
A method as in claim 1 further comprising the step of: selecting said core as a tin based alloy with at least one element selected from the group consisting of Zn, Si, Sb, Pb, Al, Cu, Ga and Ge.
Claim 5
Dependent Claim
17 words
A method as in claim 1 further comprising the step of: alloying said copper jacket with nickel.
Claim 6
Dependent Claim
16 words
A method in claim 1 further comprising the step of: alloying said niobium tube with zirconium.
Claim 7
Dependent Claim
18 words
A method as in claim 1 further comprising the step of: rolling said stock product into a ribbon.
Claim 8
Independent Claim
67 words
A method of forming a composite superconductor, comprising the steps of: fabricating a stock product comprising a core selected from the group consisting of copper, aluminum and copper aluminum alloy clad with niobium which is surrounded with a copper jacket, surrounding said copper jacket with a tin-copper alloy; and, embedding at least one of said stock products in a matrix material having good theraml and electrical conductivity.
Claim 9
Independent Claim
67 words
A method of forming a composite superconductor, comprising the steps of: fabricating a stock product comprising a core selected from the group consisting of copper, aluminum and copper aluminum alloy clad with niobium which is surrounded with a copper jacket, surrounding said copper jacket with a tin-copper alloy; and, embedding at least one of said stock products in a matrix material having good theraml and electrical conductivity.
Claim 10
Dependent Claim
19 words
A method as in claim 7, further comprising the step of: selecting copper as the material of said core.
Claim 11
Dependent Claim
19 words
A method as in claim 7, further comprising the step of: selecting aluminum as the material of said core.
Claim 12
Dependent Claim
20 words
A method as in claim 7, further comprising the step of: selecting copper-aluminum alloy as the material of said core.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-08-22 | 1981-02-21 | 1981-08-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-08-22 | 1985-02-21 | 1985-08-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-08-22 | 1989-02-21 | 1989-08-23 | $7700.00 | Window Closed / Lapsed |