Method of producing a composite oxide superconductive wire

Details Method of producing a composite oxide superconductive wire Method of producing a composite oxide superconductive wire

1991-07-26

1993-10-12

King, Roy

Superconductor technology: apparatus, material, process

High temperature , per se

Having tc greater than or equal to 150 k

505704, 427 62, 29599, 29 33F, 29 33D, 1741251, 505, 427, 2 9, 2 9, 2 9, H01L 3924, H01B 502

Patent

active

052525503

ABSTRACT:
The present invention relates to a method of producing a superconducting composite wire. The method comprises forming a continuously supplied metal or metal alloy strip into a flume-shaped strip. A ceramic copper oxide superconducting powder material is filled in the interior of the flume-shaped strip. The flume-shaped strip is rolled such that a first edge of the strip approaches a second edge of the strip to form a tubing having a gap between the first and second edges and also having the powder material enveloped therein. The gap allows free access of oxygen to the powder material during a subsequent sintering step. The powder material is then sintered at a temperature of between 0 and 100.degree. C. less than the lowest melting point of any constituent of the material. The strip enveloping the sintered material is then deformed to a reduced cross-section and subjected to a heat treatment.

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