Patent JPS5652786A successfully refreshed from Google Patents.
EP0073128A2
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EP
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Superconducting composite wire
Assignee: Westinghouse Electric Corp
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Filing: 1982-08-16
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Granted: —
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Expires: 2002-08-16
Abstract
Abstract A submicron-particle ductile superconductor and method of fabricating the same wherein the submicron particles (e.g., 300 Angstroms) of a superconductor (e.g., NbC) are encapsulated in a metal tube (e.g., copper) and then fabricated down to fine wire in the absence of sintering of reaction annealing. Because of the fluid-like properties of the unsintered submicron-particle powdered core, the composite fabricated wire retains ductility and resistance to fracture while exhibiting superconducting properties approaching those of the bulk material in the core. Multifilamentary composites are obtained by bundling and fabricating the bundle down in a required number of steps.
Inventors
- 👤 Aleksander Ignace Braginski
- 👤 Alan Thomas Male
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-29 14:12
CPC Classifications
H; H10; H10N; H10N60/00; H10N60/01; H10N60/0128; H10N60/0241; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/9265; Y10S428/93; Y10S505/00; Y10S505/80; Y10S505/812; Y10S505/813; Y10S505/825; Y10S505/917; Y10S505/928; Y10S505/929; Y10S505/93; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49014; Y10T428/00; Y10T428/12; Y10T428/12014; Y10T428/12028; Y10T428/12063; Y10T428/12097
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
28 words
A superconducting composite wire characterized in that said wire comprises an encapsulating sheath of ductile conducting metal; and encapsulated essentially contiguous core or filaments of submicron-particle superconducting powder.
Claim 2
Dependent Claim
28 words
A superconducting composite wire characterized in that said wire comprises an encapsulating sheath of ductile conducting metal; and encapsulated essentially contiguous core or filaments of submicron-particle superconducting powder.
Claim 3
Dependent Claim
24 words
A wire according to claim 1, characterized in that the encapsulating metal is selected from Cu, Al, Nb, Ta, Ag, Au or mixtures thereof.
Claim 4
Dependent Claim
54 words
A wire according to claim 1 or 2, characterized in that the encapsulated superconducting powder is selected from Nb 3 Sn, Nb 3 Al, Nb 3 Ga, Nb 3 Ge, V 3 Si, V 3 Ga, their pseudobinaries such as Nb 3 (Al, Ge), Nb(N, C), NbC, or Chevrel phases such as PbMo6sS "
Claim 5
Dependent Claim
24 words
A wire according to claim 1, 2 or 3, characterized in that the submicron-particle superconducting powder comprises particle sizes of less than 1000 Angstroms.
Claim 6
Dependent Claim
17 words
A wire according to claim 4, characterized in that the particle sizes are of about 100 Angstroms.
Claim 7
Dependent Claim
22 words
A wire according to any of the preceding claims, characterized in that the metal is Cu and the superconducting powder is NbC.
Claim 8
Dependent Claim
22 words
A wire according to any of the preceding claims, characterized in that the encapsulated filaments have not been sintered or reaction annealed.
Claim 9
Dependent Claim
46 words
A wire according to any of the preceding claims, characterized in that the submicron-particle superconducting powder is either coated with a layer of lubricant or mixed with a lubricant powder of comparable particle size, said lubricant being less than 10% by weight of said superconducting powder.
Claim 10
Independent Claim
29 words
A method of making a ductile superconducting composite wire characterized by encapsulating a submicron-particle superconducting powder in a ductile conducting metal tube; and fabricating a wire from said tube.
Claim 11
Independent Claim
29 words
A method of making a ductile superconducting composite wire characterized by encapsulating a submicron-particle superconducting powder in a ductile conducting metal tube; and fabricating a wire from said tube.
Claim 12
Dependent Claim
29 words
A method according to claim 9 further characterized by repeating said encapsulating thereby producing a plurality of said tubes; and fabricating a multifilamentary wire from said plurality of tubes.
Claim 13
Dependent Claim
34 words
A method according to claim 9 or 10 further characterized by the step of collecting said submicron-particle superconducting powder in a protective atmosphere before encapsulating said powder in the tube in the protective atmosphere.
Claim 14
Independent Claim
31 words
A method according to claims 9, 10 or 11, characterized in that the fabricating a wire from the tube is by extrusion, hydrostatic extrusion, swaging, drawing, rolling, hammering, or combinations thereof.
Claim 15
Independent Claim
28 words
A method according to claims 9, 10, 11 or 12, characterized in that the encapsulating metal is selected from Cu, Al, Nb, Ta, Ag, Au, or mixtures thereof.
Claim 16
Independent Claim
57 words
A method according to any of claims 9 to 13, characterized in that the superconducting powder is selected from Nb 3 Sn, Nb 3 Al, Nb 3 Ga, Nb 3 Ge, V 3 Si, V 3 Ga, their pseudobinaries such as Nb 3(Al, Ge), Nb(N, C), NbC, or Chevrel phases such as PbMo 6 S 8 _
Claim 17
Independent Claim
25 words
A method according to any of claims 9 to 14, characterized in that the submicron-particle superconducting powder comprises particle sizes of less than 1000 Angstroms.
Claim 18
Dependent Claim
17 words
A method according to claim 15, characterized in that the particle sizes are of about 100 Angstroms.
Claim 19
Independent Claim
23 words
A method according to any of claims 9 to 16, characterized in that the metal is Cu and the superconducting powder is NbC.
Claim 20
Independent Claim
23 words
A method according to any of claims 9 to 17, characterized in that the superconducting composite wire is not sintered or reaction annealed.
Claim 21
Independent Claim
37 words
A method according to any of claims 9 to 18, characterized in that the submicron-particle superconducting powder is either coated with a layer of lubricant or mixed with a lubricant powder of comparable or smaller particle size.
References Cited (Backward Citations)
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