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US4215465A
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Method of making V3 Ga superconductors
Assignee: United States Department of Energy
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Filing: 1978-12-06
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Granted: 1980-08-05
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Expires: 1998-12-06
Abstract
Abstract An improved method for producing a vanadium-gallium superconductor wire having aluminum as a component thereof is disclosed, said wire being encased in a gallium bearing copper sheath. The superconductors disclosed herein may be fabricated under normal atmospheres and room temperatures by forming a tubular shaped billet having a core composed of an alloy of vanadium and aluminum and an outer sheath composed of an alloy of copper, gallium and aluminum. Thereafter the entire billet is swage reduced to form a wire therefrom and heat treated to form a layer of V3 Ga in the interior of the wire.
Inventors
- 👤 David Dew-Hughes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:24
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; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12771; Y10T428/12806; Y10T428/12819; Y10T428/12861; Y10T428/12903
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
82 words
A method of making a composite superconductor having V 3 Ga as the superconducting component comprising: providing an elongated core member consisting essentially of vanadium alloyed with 0.1 to 25.0 atomic percent aluminum; encasing said core with a sheath consisting essentially of copper alloyed with 0.1 to 30.0 atomic percent gallium; and heating the resulting composite to a temperature high enough and for a period of time sufficient to form a layer of V 3 Ga between said core and said sheath.
Claim 2
Independent Claim
82 words
A method of making a composite superconductor having V 3 Ga as the superconducting component comprising: providing an elongated core member consisting essentially of vanadium alloyed with 0.1 to 25.0 atomic percent aluminum; encasing said core with a sheath consisting essentially of copper alloyed with 0.1 to 30.0 atomic percent gallium; and heating the resulting composite to a temperature high enough and for a period of time sufficient to form a layer of V 3 Ga between said core and said sheath.
Claim 3
Dependent Claim
23 words
The method described in claim 1 wherein the copper alloy sheath contains from about 0.0 to about 10.0 atomic percent aluminum alloyed therein.
Claim 4
Dependent Claim
45 words
The method of producing a superconductor element as set forth in claim 1 wherein said step of providing an elongated composite is performed by providing a plurality of parallel rods of said core material within said outer copper allow sheath which thereby encompasses said rods.
Claim 5
Dependent Claim
63 words
The method of producing a superconductor element as set forth in claim 1 wherein the elongated composite member is subjected to plastic deformation to form it into a desired shape, and subjecting the thus formed composite to a heat treatment ranging from about 500° C. to about 750° C. to form a compound layer of V 3 Ga between said core and sheath.
Claim 6
Dependent Claim
95 words
A composite superconductor having an outer protective layer and a superconducting layer composed of V 3 Ga which comprises a composite body composed: an elongated solid core composed of a vanadium alloy, the vanadium in said core being alloyed with from 0.1 to 25.0 atomic percent aluminu; a copper alloy sheath encompassing said core member, said sheath containing from about 0.1 to about 30.0 atomic percent gallium; a V 3 Ga layer intermediate with said core and said sheath formed by heating said core and said while they are in intimate contact with each other.
Claim 7
Dependent Claim
95 words
A composite superconductor having an outer protective layer and a superconducting layer composed of V 3 Ga which comprises a composite body composed: an elongated solid core composed of a vanadium alloy, the vanadium in said core being alloyed with from 0.1 to 25.0 atomic percent aluminu; a copper alloy sheath encompassing said core member, said sheath containing from about 0.1 to about 30.0 atomic percent gallium; a V 3 Ga layer intermediate with said core and said sheath formed by heating said core and said while they are in intimate contact with each other.
Claim 8
Dependent Claim
12 words
A composite conductor made in accordance with the method of claim 1.
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) | 1983-08-05 | 1984-02-04 | 1984-08-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-08-05 | 1988-02-04 | 1988-08-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-08-05 | 1992-02-04 | 1992-08-05 | $7700.00 | Window Closed / Lapsed |