US5063200A
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Ceramic superconductor article
Assignee: Hitachi Ltd
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Filing: 1988-08-09
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Granted: 1991-11-05
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Expires: 2008-08-09
Abstract
Abstract The present invention provides a shaped superconductor article such as wire, tape or disk, comprising an oxide superconductor phase and a metal phase in a monolayered or multilayered form, the metal phase comprising a copper, iron, nickel or titanium base alloy containing 1 to 10% by weight of aluminum and having an oxygen-impermeable oxide film formed thereon, preventing the diffusion of oxygen from the oxide superconductor phase to the metal phase.
Inventors
- 👤 Michiya Okada
- 👤 Tadaoki Morimoto
- 👤 Akira Okayama
- 👤 Yoshimi Yanai
- 👤 Hiroshi Satoh
- 👤 Toshimi Matsumoto
- 👤 Yoshiteru Chiba
- 👤 Kimihiko Akahori
- 👤 Takahiko Kato
- 👤 Toshiya Doi
- 👤 Kazuhide Tanaka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 04:45
CPC Classifications
C; C04; C04B; C04B35/00; C04B35/01; C04B35/45; C04B35/4504; H; H10; H10N; H10N60/00; H10N60/01; H10N60/0268; H10N60/0801; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/9265; Y10S428/93; Y10S505/00; Y10S505/70; Y10S505/701; Y10S505/702; Y10S505/703; Y10S505/704
Claims Analysis
Total Claims: 27
Claim 1
Independent Claim
100 words
A shaped superconductor article, which comprises: a shaped high Tc ceramic oxide superconductor shaped in a form of one of a wire, a tape and a disk; a metal sheath surrounding said shaped oxide superconductor and comprising a lowermost layer adjacent said shaped oxide superconductor and at least one upper layer adjacent said lowermost layer; and an oxygen impermeable conductive oxide film made of aluminum oxide formed at an interface between said lowermost layer and said at least one upper layer so as to prevent diffusion of oxygen from said shaped oxide superconductor to said at least one upper layer.
Claim 2
Dependent Claim
100 words
A shaped superconductor article, which comprises: a shaped high Tc ceramic oxide superconductor shaped in a form of one of a wire, a tape and a disk; a metal sheath surrounding said shaped oxide superconductor and comprising a lowermost layer adjacent said shaped oxide superconductor and at least one upper layer adjacent said lowermost layer; and an oxygen impermeable conductive oxide film made of aluminum oxide formed at an interface between said lowermost layer and said at least one upper layer so as to prevent diffusion of oxygen from said shaped oxide superconductor to said at least one upper layer.
Claim 3
Dependent Claim
31 words
The article according to claim 1, wherein at least one of said at least one upper layer of the metal sheath comprises an aluminum-containing, copper, iron, nickel or titanium base alloy.
Claim 4
Dependent Claim
17 words
The article according to claim 2, whereby said alloy contains 1 to 10% by weight of aluminum.
Claim 5
Dependent Claim
24 words
The article according to claim 1, wherein said metal sheath is made of an alloy which contains 1 to 10% by weight of aluminum.
Claim 6
Dependent Claim
24 words
The article according to claim 1, wherein an uppermost layer of the metal sheath comprises an aluminum-containing, copper, iron, nickel or titanium base alloy.
Claim 7
Dependent Claim
17 words
The article according to claim 5, wherein said alloy contains 1 to 10% by weight of aluminum.
Claim 8
Dependent Claim
31 words
The article according to claim 1, wherein the lowermost layer of the metal sheath comprises silver or a silver base alloy having a higher melting point than that of pure silver.
Claim 9
Dependent Claim
20 words
The article according to claim 1, wherein the lowermost layer of the metal sheath comprises gold or a gold alloy.
Claim 10
Dependent Claim
18 words
The article according to claim 1, wherein said metal sheath has a number of minute through-holes provided therein.
Claim 11
Dependent Claim
15 words
The article according to claim 1, wherein the oxide superconductor is a Y-Ba-Cu system oxide.
Claim 12
Dependent Claim
75 words
A shaped superconductor article, which comprises: a shaped high Tc ceramic oxide superconductor shaped in a form of one of a wire, a tape and a disk; a metal sheath surrounding said shaped oxide superconductor; and an oxygen impermeable conductive oxide film made of aluminum oxide formed at an interface between said shaped oxide superconductor and said metal sheath so as to prevent diffusion of oxygen from said shaped oxide superconductor to said metal sheath.
Claim 13
Dependent Claim
75 words
A shaped superconductor article, which comprises: a shaped high Tc ceramic oxide superconductor shaped in a form of one of a wire, a tape and a disk; a metal sheath surrounding said shaped oxide superconductor; and an oxygen impermeable conductive oxide film made of aluminum oxide formed at an interface between said shaped oxide superconductor and said metal sheath so as to prevent diffusion of oxygen from said shaped oxide superconductor to said metal sheath.
Claim 14
Dependent Claim
19 words
The article according to claim 11, wherein said metal sheath is made of an aluminum-containing copper, iron, nickel or
Claim 15
Dependent Claim
17 words
The article according to claim 12, wherein said alloy contains 1 to 10% by weight of aluminum.
Claim 16
Dependent Claim
18 words
The article according to claim 11, wherein said metal sheath has a number of minute through-holes provided therein.
Claim 17
Dependent Claim
15 words
The article according to claim 11, wherein the oxide superconductor is a Y-Ba-Cu system oxide.
Claim 18
Dependent Claim
100 words
A shaped superconductor article which comprises: a shaped high Tc ceramic oxide superconductor shaped in a form of one of a wire, a tape and a disk; a metal sheath surrounding said shaped oxide superconductor and comprising at least one lower layer adjacent said shaped oxide superconductor and an uppermost layer adjacent said at least one lower layer; and an oxygen impermeable conductive oxide film made of aluminum oxide formed at an interface between said at least one lower layer and said uppermost layer so as to prevent diffusion of oxygen from said shaped oxide superconductor to said uppermost layer.
Claim 19
Dependent Claim
100 words
A shaped superconductor article which comprises: a shaped high Tc ceramic oxide superconductor shaped in a form of one of a wire, a tape and a disk; a metal sheath surrounding said shaped oxide superconductor and comprising at least one lower layer adjacent said shaped oxide superconductor and an uppermost layer adjacent said at least one lower layer; and an oxygen impermeable conductive oxide film made of aluminum oxide formed at an interface between said at least one lower layer and said uppermost layer so as to prevent diffusion of oxygen from said shaped oxide superconductor to said uppermost layer.
Claim 20
Dependent Claim
20 words
The article according to claim 16, wherein said uppermost layer comprises an aluminum-containing copper, iron, nickel or titanium base alloy.
Claim 21
Dependent Claim
17 words
The article according to claim 17, wherein said alloy contains 1 to 10% by weight of aluminum.
Claim 22
Dependent Claim
18 words
The article according to claim 16, wherein said metal sheath has a number of minute through-holes provided therein.
Claim 23
Dependent Claim
15 words
The article according to claim 16, wherein the oxide superconductor is a Y-Ba-Cu system oxide.
Claim 24
Dependent Claim
45 words
A shaped superconductor article according to claim 16, wherein said at least one lower layer is made of a material selected from the group consisting of silver, a silver base alloy having a higher melting point than that pure silver, gold and a gold alloy.
Claim 25
Dependent Claim
43 words
The article according to claim 16, wherein the uppermost layer of the metal sheath comprises an aluminum-containing alloy, and a layer of a metal or a plurality of layers of different metals are provided between said uppermost layer and the oxide superconductor phase.
Claim 26
Dependent Claim
24 words
The article according to claim 22, wherein said layer of metal or said plurality of layers of different metals are made of noble metals.
Claim 27
Dependent Claim
61 words
The article according to claim 16, wherein the uppermost layer of the metal sheath comprises an aluminum-containing alloy, a lowermost layer comprises silver or a silver alloy and a middle layer or layers are constituted by laminating a plurality of repeated units, each of which is comprised of an oxide superconductor layer and a layer of the silver or silver alloy.
References Cited (Backward Citations)
No citation records indexed.
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