Superconductor technology: apparatus – material – process – High temperature – per se – Having tc greater than or equal to 150 k
Patent
1989-06-29
1990-09-25
Lechert, Jr., Stephen J.
Superconductor technology: apparatus, material, process
High temperature , per se
Having tc greater than or equal to 150 k
505704, 505705, 505740, 428389, 1741251, 29599, H01L 3912, H01L 508, H01L 3924
Patent
active
049593447
ABSTRACT:
A method of manufacturing a superconductive coil by means of explosive compaction. A wire formed of silver having a superconductive oxide powder charged therein is formed into a coil. The coil is placed within a cylindrical vessel, into which a pressure medium is charged. Explosive compaction is carried out to cause the compaction of the coil through the cylindrical vessel and the pressure medium and hence densify the coil. The compacted coil is heat-treated in an air or oxygen atmosphere. The resulting superconductive coil possesses high critical electric current density. Advantageously, the coil is mounted on a mandrel axially extending therethrough, and placed together with the mandrel into the cylindrical vessel, before explosive compaction.
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Murr et al., "Shock Compression Fabrication of High-Temperature Superconductor/Metal Composite Monoliths", Nature, vol. 329, Sep. 3, 1987.
"Structural, Electrical and Magnetic Properties of High-T.sub.c Bi-Sr-Ca-Cu-O Superconductors", vol. 8, No. 4, 4/1989, Material Science.
"Computer Simulation of Dynamic Compaction", Mark L. Wilkins and Carl F. Cline, Explosive Compaction.
Hagino Sadaaki
Suzuki Motokazu
Takashima Kazuki
Takeshita Takuo
Tonda Hideki
Bhat Nina
Lechert Jr. Stephen J.
Mitsubishi Metal Corporation
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