Superconductor technology: apparatus – material – process – Processes of producing or treating high temperature... – Process of making wire – tape – cable – coil – or fiber
Patent
1997-10-20
1999-05-11
Gorski, Joseph M.
Superconductor technology: apparatus, material, process
Processes of producing or treating high temperature...
Process of making wire, tape, cable, coil, or fiber
29423, 29599, 505481, 505501, H01L39/24
Patent
active
059027746
ABSTRACT:
A method of producing a tape-shaped superconducting wire is provided. The wire maintains a high critical temperature and a high critical current density along the overall length thereof. In this method, raw material powder for the oxide superconductor is first charged in a silver sheath and the sheath charged with the powder is subjected to plastic working to prepare a first flat type wire. On the other hand, a second wire consisting of a tape wire formed by coating a surface of a flat type wire having at least an outer surface consisting essentially of silver or a silver alloy with a metal oxide or ceramics, or a tape wire containing ceramics fibers and a binder dissipated by heat treatment is prepared. The first and second wires are layered with each other, and tightly wound in a pancake coil shape. The wires wound in the pancake coil shape are heat treated for sintering the oxide superconductor. After the heat treatment, the first wire is separated from the second wire.
REFERENCES:
patent: 5102483 (1992-04-01), Sawada et al.
patent: 5140006 (1992-08-01), Woolf
Patent Abstract of Japan vol. 016, No. 367 (E-1245) Aug. 7, 1992 & JP-A-04 6 906 (Furukawa Electric Co. Ltd.: The) Apr. 17, 1992.
Patent Abstracts of Japan, vol. 016, No. 497 (E-1279) Oct. 14, 1992 & JP-A-04 181, 704 (Sumitomo Heavy Ind. Ltd.) Jun. 29, 1992.
Patent Abstracts of Japan, vol. 014, No. 564 (E-1013) Dec. 14, 1990 & JP-A-02 246 101 (Hitachi Cable Ltd.) Oct. 1, 1990.
Hikata Takeshi
Muranaka Koji
Sato Ken'ichi
Gorski Joseph M.
Research Development Corporation of Japan
Sumitomo Electric Industries Ltd.
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