Superconductor technology: apparatus – material – process – High temperature – per se – Having tc greater than or equal to 150 k
Patent
1989-03-10
1992-03-31
Lechert, Jr., Stephen J.
Superconductor technology: apparatus, material, process
High temperature , per se
Having tc greater than or equal to 150 k
75234, 505805, 505807, 505813, 419 19, 419 23, 419 33, 148 115C, 148 115P, H01L 3912
Patent
active
051008696
ABSTRACT:
A metal oxide-type superconductive material is produced by a process which comprises a first step of subjecting a powder raw material containing given proportions of metal elements to be contained in said metal oxide-type superconductive material, to mechanical grinding and alloying simultaneously to obtain an alloy powder and a second step of heat-treating the alloy powder in an oxygen-containing gas atmosphere to obtain a metal oxide.
The superconductive material obtained has a high density, a low porosity, a high strength and a high critical current density.
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Preparation of a High Tc Superconductor by Oxidation of an Amorphous LaSrCu Alloy R,BBON in Air. Japanese Journal Applied Physics, vol. 26, No. 4, 1987.
Inoue Akihisa
Masumoto Tsuyoshi
Matsuzaki Kunio
Moroishi Keiji
Bhat N.
Hoya Corporation
Lechert Jr. Stephen J.
Tsuyoshi Masumoto
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