Method of producing superconducting ceramic wire and product

Details Method of producing superconducting ceramic wire and product Method of producing superconducting ceramic wire and product

1990-11-14

1993-07-20

Lindsay, Robert L.

Superconductor technology: apparatus, material, process

High temperature , per se

Having tc greater than or equal to 150 k

65 2, 65 33, 505733, 505740, 505742, C03B 3700

Patent

active

052293572

ABSTRACT:
A superconducting ceramic wire is produced by melting a superconducting ceramic-forming metal oxide composition, and quenching the melt into a glass which is then formed into a preform of thin plate. The preform is soften and wire-drawn without causing crystallization in a furnace into a flexible elongated thin tape having a thickness of e.g. 40 to 60 .mu.m. The tape is heat-treated for crystallization to obtain the superconducting wire. The disclosure mentions mainly Bi Bi-Sr-Ca-Cu-O superconducting systems.

REFERENCES:
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patent: 4861751 (1989-08-01), Tenhover
Miura et al., As-grown crystallized thin film of Bi-Sr-Ca-Cu-O and its low-temperature annealing effect, Appl. Phys. Lett. 55(15), 10 Apr. 1989, pp. 1474-1476.
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Tanaka et al., Composition dependence of high T.sub.c phase formation in Pb-doped Bi-Sr-Ca-Cu-O thin films, Appl. Phys Lett. 55(-2), 18 Sep. 1989, pp. 1252-1254.
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