Patent ID: 6028036
Filing Date: 2000-02-22
Classification: H01L,Y10S

Abstract:
A superconductive composite member comprising a core of a copper oxide ceramic superconductor material being received in an outer envelope, said copper oxide ceramic superconductor material being selected from a group consisting of YBaCuO, BiSrCaCuO and TiBaCaCuO, said envelope being an alloy which has a high hardness and has an oxygen permeation, said alloy containing an element forming an oxide dispersion in the alloy to harden the envelope, and at least one additional precious metal for increasing electrical resistance, said precious metal being selected from a group consisting of Ru, Rh, Pd, Os, Ir, Pt and Au, said alloy being an Ag--Mg--Ni--precious metal alloy having 0.1% to 0.25% by weight Mg, 0.1% to 0.25% by weight Ni, no more than 10% by weight precious metal and the remainder being silver.