Patent JPS6231629A successfully refreshed from Google Patents.
EP0357779A1
Expired / Lapsed
EP
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Superconductive wire and cable having high current density, and method of producing them
Assignee: Mitsubishi Materials Corp
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Filing: 1988-12-26
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Granted: —
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Expires: 2008-12-26
Abstract
Abstract A superconductive structure comprising an oxide superconductive ceramic powder having a perovskite structure and a metallic covering member or, preferably, an Ag covering member which encloses said powder, wherein a compression oriented layer is formed maintaining a thickness of greater than 5 mu m in which the C-axis direction of crystals of the powder is oriented perpendicularly to the lengthwise direction of the superconductive structure. The invention further deals with a method of producing the same.
Inventors
- 👤 Sadaaki Hagino
- 👤 Motokazu Suzuki
- 👤 Hideyuki Kondo
- 👤 Shigeru Nishikawa
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-08 02:45
CPC Classifications
H; H10; H10N; H10N60/00; H10N60/20; H10N60/203; H10N60/01; H10N60/0268; H10N60/0801; Y; Y10; Y10S; Y10S505/00; Y10S505/725; Y10S505/739; Y10S505/74
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
75 words
A superconducting structural body comprising an oxide based superconducting ceramics powder having a perovskite structure and a covering body made of metal, preferably Ag filling the oxide based superconducting ceramics powder therein, the superconducting structural body having a compressed oriented layer in which a C axial direction of crystalline of the powder is oriented perpendicularly to a longitudinal direction of the superconducting structural body and in which a thickness thereof is greater than 5 µm.
Claim 2
Dependent Claim
75 words
A superconducting structural body comprising an oxide based superconducting ceramics powder having a perovskite structure and a covering body made of metal, preferably Ag filling the oxide based superconducting ceramics powder therein, the superconducting structural body having a compressed oriented layer in which a C axial direction of crystalline of the powder is oriented perpendicularly to a longitudinal direction of the superconducting structural body and in which a thickness thereof is greater than 5 µm.
Claim 3
Dependent Claim
68 words
A superconducting wire comprising an oxide based superconducting ceramics powder having a perovskite structure and a metal sheath filling the oxide based superconducting ceramics powder therein, the superconducting structural body having a compressed oriented layer in which a C axial direction of crystalline of the powder is oriented perpendicularly to a longitudinal direction of the superconducting wire and in which a thickness thereof is greater than 5 pm.
Claim 4
Dependent Claim
68 words
A superconducting wire comprising an oxide based superconducting ceramics powder having a perovskite structure and a metal sheath filling the oxide based superconducting ceramics powder therein, the superconducting structural body having a compressed oriented layer in which a C axial direction of crystalline of the powder is oriented perpendicularly to a longitudinal direction of the superconducting wire and in which a thickness thereof is greater than 5 pm.
Claim 5
Dependent Claim
70 words
A superconducting cable comprising a plurality of metal covered superconducting wires filled oxide based superconducting ceramics powder having a perovskite structure therein and a pipe made of metal, the superconducting structural body having a compressed oriented layer in which a C axial direction of crystalline of the powder is oriented perpendicularly to a longitudinal direction of the superconducting wire and in which a thickness thereof is greater than 5 µm.
Claim 6
Dependent Claim
70 words
A superconducting cable comprising a plurality of metal covered superconducting wires filled oxide based superconducting ceramics powder having a perovskite structure therein and a pipe made of metal, the superconducting structural body having a compressed oriented layer in which a C axial direction of crystalline of the powder is oriented perpendicularly to a longitudinal direction of the superconducting wire and in which a thickness thereof is greater than 5 µm.
Claim 7
Dependent Claim
84 words
A process for fabricating a superconducting structural body comprising by rolling the superconducting structural body comprising an oxide based superconducting ceramics powder having a perovskite structure and a covering body made of metal at a reduction ratio of greater than about 30% so that a compressed oriented layer, in which a C axial direction of crystalline of the powder is oriented perpendicularly to a longitudinal direction of the superconducting structural body and in which a thickness thereof is greater than 5 µm, is formed.
Claim 8
Dependent Claim
84 words
A process for fabricating a superconducting structural body comprising by rolling the superconducting structural body comprising an oxide based superconducting ceramics powder having a perovskite structure and a covering body made of metal at a reduction ratio of greater than about 30% so that a compressed oriented layer, in which a C axial direction of crystalline of the powder is oriented perpendicularly to a longitudinal direction of the superconducting structural body and in which a thickness thereof is greater than 5 µm, is formed.
Claim 9
Dependent Claim
76 words
A process for fabricating a superconducting wire comprising the steps: filling oxide based superconducting ceramics powder having a perovskite structure in a sheath made of metal, drawing the the sheath filled with the oxide based superconducting ceramics powder to form a superconducting wire, subjecting the superconducting wire to rolling with a flat roll at a reduction ratio of greater than about 30%, and heat-treating the rolled wire at sintering temperatures enough to sinter the superconducting ceramics.
Claim 10
Dependent Claim
76 words
A process for fabricating a superconducting wire comprising the steps: filling oxide based superconducting ceramics powder having a perovskite structure in a sheath made of metal, drawing the the sheath filled with the oxide based superconducting ceramics powder to form a superconducting wire, subjecting the superconducting wire to rolling with a flat roll at a reduction ratio of greater than about 30%, and heat-treating the rolled wire at sintering temperatures enough to sinter the superconducting ceramics.
Claim 11
Dependent Claim
87 words
A process for fabricating a superconducting cable comprising the steps: filling a plurality of superconducting wires in a pipe made of metal, the superconducting wires each comprising by filling oxide based superconducting ceramics powder having a perovskite structure, drawing the pipe filled with a plurality of the superconducting wires to produce a cable, subjecting the cable to final rolling with a flat roll so that a reduction ratio becomes greater than about 30%, and heat-treating the rolled cable at sintering temperatures enough to sinter the superconducting ceramics.
Claim 12
Dependent Claim
87 words
A process for fabricating a superconducting cable comprising the steps: filling a plurality of superconducting wires in a pipe made of metal, the superconducting wires each comprising by filling oxide based superconducting ceramics powder having a perovskite structure, drawing the pipe filled with a plurality of the superconducting wires to produce a cable, subjecting the cable to final rolling with a flat roll so that a reduction ratio becomes greater than about 30%, and heat-treating the rolled cable at sintering temperatures enough to sinter the superconducting ceramics.
References Cited (Backward Citations)
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