US4501062A
Expired / Lapsed
US
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Stabilized super-conductor having a diffusion-inhibiting layer therein and method of producing same
Assignee: Vacuumschmelze GmbH and Co KG
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Filing: 1983-02-28
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Granted: 1985-02-26
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Expires: 2003-02-28
Abstract
Abstract A stabilized super-conductor of the type containing a super-conductive region consisting of an intermetallic compound containing at least two elements, such as Nb 3 Sn, and a normally-conductive region containing a material which is normally conductive during operational temperatures of the super-conductive region, such as Cu, with a diffusion-inhibiting layer, such as at least partially composed of Ta, positioned between the super-conductive and the normally-conductive regions is produced by providing a structure composed of a region of normally-conductive material and a region of super-conductive material, arranging a plurality of rod-shaped segments, at least some of which are composed of a diffusion-inhibiting material, between the normally conductive and the super-conductive regions and deforming the resultant structure one or more times, with intermediate annealing so as to attain a conductor having a desired reduced cross-section while causing the rod segments to combine with one another to form a diffusion-inhibiting layer.
Inventors
- 👤 Hans Hillmann
- 👤 Engelbert Springer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 23:08
CPC Classifications
H; H10; H10N; H10N60/00; H10N60/01; H10N60/0184; Y; Y10; Y10S; Y10S505/00; Y10S505/825; Y10S505/917; Y10S505/918; Y10S505/919; Y10S505/92; Y10S505/928; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49014
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
173 words
In a method of producing a stabilized super-conductor having a cross-sectional region of a super-conductor material consisting of an intermetallic compound containing at least two elements and having a cross-sectional region of a material which is normally conductive at operating temperatures of the super-conductive material, with a layer of a diffusion-inhibiting material positioned between the cross-sectional regions of the normally conductive material and the super-conductive material whereby a stabilized super-conductor cross-section is first assembled from all said materials and the assembled structure is subsequently deformed one or several times with intermediate annealing for reducing the cross-section of such structure until a desired cross-section dimension is attained, wherein the improvement comprises: arranging, prior to deformation for attainment of a desired cross-section dimension, a plurality of individual rod-shaped segments, at least some of which are composed of a diffusion-inhibiting material, between said regions of normally conductive material and super-conductive material; and subjecting the so-assembled structure to deformation conditions sufficient to combine said individual segments into a diffusion-inhibiting layer while attaining a desired conductor cross-section dimension.
Claim 2
Dependent Claim
173 words
In a method of producing a stabilized super-conductor having a cross-sectional region of a super-conductor material consisting of an intermetallic compound containing at least two elements and having a cross-sectional region of a material which is normally conductive at operating temperatures of the super-conductive material, with a layer of a diffusion-inhibiting material positioned between the cross-sectional regions of the normally conductive material and the super-conductive material whereby a stabilized super-conductor cross-section is first assembled from all said materials and the assembled structure is subsequently deformed one or several times with intermediate annealing for reducing the cross-section of such structure until a desired cross-section dimension is attained, wherein the improvement comprises: arranging, prior to deformation for attainment of a desired cross-section dimension, a plurality of individual rod-shaped segments, at least some of which are composed of a diffusion-inhibiting material, between said regions of normally conductive material and super-conductive material; and subjecting the so-assembled structure to deformation conditions sufficient to combine said individual segments into a diffusion-inhibiting layer while attaining a desired conductor cross-section dimension.
Claim 3
Dependent Claim
44 words
In a method as defined in claim 1 wherein said rod-shaped segments each have a round cross-section and are inserted between the cross-sectional region of the normally conductive material and the cross-sectional region of the super-conductive region prior to deformation of the so-assembled structure.
Claim 4
Dependent Claim
44 words
In a method as defined in claim 1 wherein said rod-shaped segments each have a multi-sided cross-section and are inserted between the cross-sectional region of the normally conductive material and the cross-sectional region of the super-conductive region prior to deformation of the so-assembled structure.
Claim 5
Dependent Claim
30 words
In a method as defined in claim 1 wherein said rod-shaped segments are wound with a sheet for retaining said segments in a desired position within the assembled conductor structure.
Claim 6
Dependent Claim
17 words
In a method as defined in claim 4 wherein said sheet is composed of a copper-tin bronze.
Claim 7
Dependent Claim
51 words
In a method as defined in claim 1 wherein some of said rod-shaped segments are composed of niobium and some are composed of tantalum, said niobium segments being positioned alternately with said tantalum segments so that the subsequently formed diffusion-inhibiting layer possesses some areas of niobium with interposed areas of tantalum.
Claim 8
Dependent Claim
27 words
In a method as defined in claim 6 wherein said niobium segments comprise about 66% to 75% of the total number of segments positioned between said areas.
Claim 9
Dependent Claim
46 words
In a method as defined in claim 6 wherein said niobium and tantalum segments are arranged between the cross-sectional regions of normally conductive material and super-conductive material in such a manner that a repeating sequence of three tantalum segments adjacent to two niobium segments is attained.
Claim 10
Dependent Claim
16 words
In a method as defined in claim 6 wherein said super-conductive material is Nb 3 Sn.
Claim 11
Dependent Claim
16 words
In a method as defined in claim 6 wherein said super-conductive material is V 3 Ga.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-02-26 | 1988-08-27 | 1989-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-02-26 | 1992-08-27 | 1993-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-02-26 | 1996-08-27 | 1997-02-26 | $7700.00 | Window Closed / Lapsed |