H - Electricity – 01 – L
Patent
H - Electricity
01
L
H01L 39/24 (2006.01) C04B 35/45 (2006.01) H01L 39/08 (2006.01)
Patent
CA 2063281
In a method of preparing an oxide superconducting wire comprising the steps of filling up raw material powder for an oxide superconductor in a metal sheath, performing first rolling in this state for working the metal sheath into a tape, performing first heat treatment, then performing second rolling and further performing second heat treatment, diameters of rolls employed for the second rolling are made larger by at least 5 cm than those of rolls employed for the first rolling, in order to improve the critical current density of the as-formed oxide superconducting wire over its longitudinal direction.
Hikata Takeshi
Sato Kenichi
Bereskin & Parr
Sumitomo Electric Industries Ltd.
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