Superconductor composite

Details Superconductor composite Superconductor composite

1989-02-13

1991-08-20

Lechert, Jr., Stephen J.

Superconductor technology: apparatus, material, process

High temperature , per se

Having tc greater than or equal to 150 k

419 19, 419 21, 419 35, 419 39, 419 57, 428403, 428614, 428930, H01L 3912

Patent

active

050414143

ABSTRACT:
Continuous malleable superconductive material which can be machined, rolled and soldered, being the product of sintering at an elevated temperature and pressure of a metal plated powder of a compound QBa.sub.2 Cu.sub.3 O.sub.7-x wherein Q is yttrium or europium, where x is smaller than one. The metal is advantageously silver and the plating process is one without the use of electricity. A preferred range of silver content is about 5 to 32 weight per cent, and the silver forms an essentially continuous phase in the superconductive material. Sintering can be done at from about 350.degree. and 950.degree. C., with a preferred range of 400.degree. to 900.degree. C. The superconductive material of the invention exhibits transition to zero-resisitivity state and the Meissner effect.

REFERENCES:
patent: 4762754 (1988-08-01), Nellis et al.
patent: 4892861 (1990-01-01), Ray

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