Wire for Nb.sub.3 X superconducting wire

Details Wire for Nb.sub.3 X superconducting wire Wire for Nb.sub.3 X superconducting wire

1994-02-17

1996-09-10

Zimmerman, John

Stock material or miscellaneous articles

All metal or with adjacent metals

Microscopic interfacial wave or roughness

428614, 428662, 428930, 505813, 505814, 505920, H01B 1210

Patent

active

055544487

ABSTRACT:
Disclosed herein is a wire for an Nb.sub.3 X superconducting wire, which is improved in workability and soundness of a diffusion barrier layer without increasing the diffusion barrier layer in thickness. This wire for an Nb.sub.3 X superconducting wire comprises a wire which is prepared by superposing and winding up a first sheet consisting of pure Nb or an Nb alloy and a second sheet consisting of metal atoms X, reacting with Nb for forming a compound exhibiting superconductivity, or an X alloy, a stabilizing material layer which is provided to enclose the wire, and a diffusion barrier layer which is provided between an outer surface of the wire and an inner surface of the stabilizing material layer for preventing the metal atoms X from being diffused in the stabilizing material layer, and the diffusion barrier layer is made of a metal material having larger tensile strength than that of the first sheet. It is possible to obtain a high-performance Nb.sub.3 X superconducting wire having a high critical current density and a large residual resistance ratio of the stabilizing material, by heat treating this wire.

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