Multifilament Nb.sub.3 Al superconducting linear composite artic

Details Multifilament Nb.sub.3 Al superconducting linear composite artic Multifilament Nb.sub.3 Al superconducting linear composite artic

1989-02-24

1990-04-17

Rutledge, L. Dewayne

Stock material or miscellaneous articles

All metal or with adjacent metals

Laterally noncoextensive components

428930, 505813, H01B 1200

Patent

active

049179659

ABSTRACT:
A long, linear composite article which is characterized in that a large number of composite filaments are present as spaced from one another in a continuous layer composed of copper, a copper alloy, niobium, tantalum or vanadium, each of said composite filaments having a structure that at least one strand of a linear body is surrounded by an aluminum alloy or niobium, said linear body being composed substantially of extremely fine, filamentary superconducting Nb.sub.3 Al compound having an average diameter of from about 0.03 .mu.m to about 1 .mu.m. The said composite article can be prepared by drawing a composite material composed of (a) an aluminum alloy and (b) niobium, together with copper or a copper alloy once or plural times repeatedly, until the average diameter of the aluminum alloy of (a) becomes about 1 .mu.m or less, and heat-treating the resultant linear composite material. This composite articles exhibit excellent superconducting characteristics in high-magnetic field and alternating-current magnetic field.

REFERENCES:
patent: 3815224 (1974-06-01), Pickus et al.
patent: 4223434 (1988-09-01), Wong et al.
patent: 4791241 (1988-12-01), Ando et al.

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