Superconductor technology: apparatus – material – process – High temperature – per se – Free metal containing
Patent
1997-02-26
1999-12-07
Yamnitzky, Marie
Superconductor technology: apparatus, material, process
High temperature , per se
Free metal containing
505236, 505470, 505490, 505500, 29599, 252514, 2525181, 428403, 428404, 428457, 428697, 428699, 428702, 428555, 428558, 428930, 1741251, H01L 3900, H01B 1200
Patent
active
059983361
ABSTRACT:
A composite superconducting material made of coated particles of ceramic superconducting material and a metal matrix material. The metal matrix material fills the regions between the coated particles. The coating material is a material that is chemically nonreactive with the ceramic. Preferably, it is silver. The coating serves to chemically insulate the ceramic from the metal matrix material. The metal matrix material is a metal that is susceptible to the superconducting proximity effect. Preferably, it is a NbTi alloy. The metal matrix material is induced to become superconducting by the superconducting proximity effect when the temperature of the material goes below the critical temperature of the ceramic. The material has the improved mechanical properties of the metal matrix material. Preferably, the material consists of approximately 10% NbTi, 90% coated ceramic particles (by volume). Certain aspects of the material and method will depend upon the particular ceramic superconductor employed. An alternative embodiment of the invention utilizes A15 compound superconducting particles in a metal matrix material which is preferably a NbTi alloy.
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The Board of Trustees of the Leland Stanford Junior University
Yamnitzky Marie
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