Superconductor technology: apparatus – material – process – High temperature devices – systems – apparatus – com- ponents,... – Electrical energy storage device – inductor – transformer,...
Patent
1994-02-15
1994-12-13
Picard, Leo P.
Superconductor technology: apparatus, material, process
High temperature devices, systems, apparatus, com- ponents,...
Electrical energy storage device , inductor, transformer,...
1741251, 335216, 505700, 505704, 505705, 505230, H01F 722, H01B 1202
Patent
active
053729919
ABSTRACT:
An oxide superconductive wire is provided by, for example, forming an oxide superconductive layer on a tape-type flexible base. A preliminary compressive strain is applied to the oxide superconductive layer in the longitudinal direction. The remaining strain can be provided by using a base having thermal expansion coefficient larger than that of the oxide superconductive layer and by cooling the same after heat treatment, due to contraction of the base. Since the preliminary compressive strain is applied to the oxide superconductive layer, degradation of superconductivity of the oxide superconductive layer can be suppressed even if the oxide superconductive wire is bent in any direction, compared with the wire without such strain. Therefore, the oxide superconductive wire can be coiled, for example, without much degrading the superconductivity.
Hayashi Noriki
Hitotsuyanagi Hajime
Okuda Shigeru
Takano Satoshi
Barrera Raymond M.
Picard Leo P.
Sumitomo Electric Industries Inc.
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