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US4581289A
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Superconducting fiber bundle
Assignee: Karlsruher Institut für Technologie
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Filing: 1983-07-29
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Granted: 1986-04-08
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Expires: 2003-07-29
Abstract
Abstract Superconducting fiber bundle which contains a multiplicity of carrier fibers such as, for instance, carbon fibers, boron fibers, steel fibers coated with a superconducting layer of a niobium compound of the general formula NbCxNyOz (x+y+z less than or equal to 1), said superconducting layer formed of fine-grained B1-structure niobium compound, the mean grain size of which is between 3 and 50 nm, and the layer thickness of the superconducting layer is between 100 and 2000 nm, characterized by the feature that the superconducting layer contains occlusions of insulating material uniformly distributed, between the B1-structure niobium compound grains, or that in the superconducting layer, occlusions of insulating material are deposited on all grain boundaries of the B1-structure niobium compound drains, independently of their spatial orientation, or that in the superconducting layer, occlusions or insulating material are deposited at grain boundaries of the B1-structure niobium compound grains with definite spatial orientation within the superconducting layer, or that the superconductive material of niobium compound contains an additional element which increases the conductivity.
Inventors
- 👤 Manfred Dietrich
- 👤 Cord-Heinrich Dustmann
- 👤 Franz Schmaderer
- 👤 Georg F. H. Wahl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:24
CPC Classifications
D; D01; D01F; D01F11/00; D01F11/10; D01F11/12; D01F11/128; H; H10; H10N; H10N60/00; H10N60/01; H10N60/0241; H10N60/80; H10N60/85; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/9265; Y10S428/93; Y10S505/00; Y10S505/80; Y10S505/812; Y10S505/813; Y10S505/815; Y10S505/816; Y10S505/818; Y10S505/819; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/294; Y10T428/2942; Y10T428/2949; Y10T428/2958
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
101 words
A superconducting fiber bundle which comprises a multiplicity of carrier fibers coated with a superconductive layer of a niobium compound selected from the group consisting of niobium oxycarbonitride and niobium carbonitride of the general formula NbC x N y O z wherein x+y+z is equal to or less than 1, said superconductive layer of niobium compound having a fine-grained B1-structure with a mean grain size between 3 and 50 nm, and a layer thickness of the superconducting layer between 100 and 2000 nm and wherein the superconducting layer contains occlusions of insulating material uniformly distributed, between the B1-structure niobium compound grains.
Claim 2
Dependent Claim
101 words
A superconducting fiber bundle which comprises a multiplicity of carrier fibers coated with a superconductive layer of a niobium compound selected from the group consisting of niobium oxycarbonitride and niobium carbonitride of the general formula NbC x N y O z wherein x+y+z is equal to or less than 1, said superconductive layer of niobium compound having a fine-grained B1-structure with a mean grain size between 3 and 50 nm, and a layer thickness of the superconducting layer between 100 and 2000 nm and wherein the superconducting layer contains occlusions of insulating material uniformly distributed, between the B1-structure niobium compound grains.
Claim 3
Dependent Claim
22 words
Superconducting fiber bundle according to claim 1, wherein the superconductive material of niobium compound contains an additional element which increases the conductivity.
Claim 4
Dependent Claim
19 words
Superconducting fiber bundle according to claim 1, wherein the superconducting layer is coated with a highly conductive metal layer.
Claim 5
Dependent Claim
110 words
A superconducting fiber bundle which comprises a multiplicity of carrier fibers coated with a superconductive layer of a niobium compound selected from the group consisting of niobium oxycarbonitride and niobium carbonitride of the general formula NbC x N y O z wherein x+y+z is equal to or less than 1, said superconductive layer of niobium compound having a fine-grained B1-structure with a means grain size between 3 and 50 nm, and a layer thickness of the superconducting layer between 100 and 2000 nm, and wherein in the superconducting layer, occlusions of insulating material are deposited on all grain boundaries of the B1-structure niobium compound grains, independently of their spatial orientation.
Claim 6
Dependent Claim
110 words
A superconducting fiber bundle which comprises a multiplicity of carrier fibers coated with a superconductive layer of a niobium compound selected from the group consisting of niobium oxycarbonitride and niobium carbonitride of the general formula NbC x N y O z wherein x+y+z is equal to or less than 1, said superconductive layer of niobium compound having a fine-grained B1-structure with a means grain size between 3 and 50 nm, and a layer thickness of the superconducting layer between 100 and 2000 nm, and wherein in the superconducting layer, occlusions of insulating material are deposited on all grain boundaries of the B1-structure niobium compound grains, independently of their spatial orientation.
Claim 7
Dependent Claim
22 words
Superconducting fiber bundle according to claim 4, wherein the superconductive material of niobium compound contains an additional element which increases the conductivity.
Claim 8
Dependent Claim
19 words
Superconducting fiber bundle according to claim 4, wherein the superconducting layer is coated with a highly conductive metal layer.
Claim 9
Dependent Claim
112 words
A superconducting fiber bundle which comprises a multiplicity of carrier fibers coated with a superconductive layer of a niobium compound selected from the group consisting of niobium oxycarbonitride and niobium carbonitride of the general formula NbC x N y O z wherein x+y+z is equal to or less than 1, said superconductive layer of niobium compound having a fine-grained B1-structure with a mean grain size between 3 and 50 nm, and a layer thickness of the superconducting layer between 100 and 2000 nm, and wherein in the superconducting layer, occlusions of insulating material are deposited at grain boundaries of the B1-structure niobium compound grains with definite spatial orientation within the superconducting layer.
Claim 10
Dependent Claim
112 words
A superconducting fiber bundle which comprises a multiplicity of carrier fibers coated with a superconductive layer of a niobium compound selected from the group consisting of niobium oxycarbonitride and niobium carbonitride of the general formula NbC x N y O z wherein x+y+z is equal to or less than 1, said superconductive layer of niobium compound having a fine-grained B1-structure with a mean grain size between 3 and 50 nm, and a layer thickness of the superconducting layer between 100 and 2000 nm, and wherein in the superconducting layer, occlusions of insulating material are deposited at grain boundaries of the B1-structure niobium compound grains with definite spatial orientation within the superconducting layer.
Claim 11
Dependent Claim
21 words
Superconducting fiber bundle according to claim 7, wherein the grain boundaries are parallel to the surface of the respective carrier fiber.
Claim 12
Dependent Claim
22 words
Superconducting fiber bundle according to claim 7, wherein the superconductive material of niobium compound contains an additional element which increases the conductivity.
Claim 13
Dependent Claim
19 words
Superconducting fiber bundle according to claim 7, wherein the superconducting layer is coated with a highly conductive metal layer.
Claim 14
Dependent Claim
98 words
A superconducting fiber bundle which comprises a multiplicity of carrier fibers coated with a superconductive layer of a niobium compound selected from the group consisting of niobium oxycarbonitride and niobium carbonitride of the generalformula NbC x N y O z wherein x+y+z is equal to or less than 1, said superconductive layer of niobium compound having a fine-grained B1-structure with a mean grain size between 3 and 50 nm, and a layer thickness of the superconducting layer between 100 and 2000 nm, and wherein the superconductive material of niobium compound contains an additional element which increases the conductivity.
Claim 15
Dependent Claim
98 words
A superconducting fiber bundle which comprises a multiplicity of carrier fibers coated with a superconductive layer of a niobium compound selected from the group consisting of niobium oxycarbonitride and niobium carbonitride of the generalformula NbC x N y O z wherein x+y+z is equal to or less than 1, said superconductive layer of niobium compound having a fine-grained B1-structure with a mean grain size between 3 and 50 nm, and a layer thickness of the superconducting layer between 100 and 2000 nm, and wherein the superconductive material of niobium compound contains an additional element which increases the conductivity.
Claim 16
Dependent Claim
23 words
Superconducting fiber bundle according to claim 11, wherein the additional element is a member selected from the group consisting of tantalum and titanium.
Claim 17
Dependent Claim
19 words
Superconducting fiber bundle according to claim 11, wherein the superconducting layer is coated with a highly conductive metal layer.
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) | 1989-04-07 | 1989-10-07 | 1990-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-04-07 | 1993-10-07 | 1994-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-04-07 | 1997-10-07 | 1998-04-08 | $7700.00 | Window Closed / Lapsed |