H - Electricity – 01 – B
Patent
H - Electricity
01
B
25/139, 205/37,
H01B 13/00 (2006.01) B28B 1/00 (2006.01) C04B 35/45 (2006.01) C04B 35/64 (2006.01) H01B 12/04 (2006.01) H01L 39/24 (2006.01)
Patent
CA 2024806
In order to obtain a ceramics-type superconducting wire, a bulk type ceramics-type superconductor or its precursor previously treated to have orientativity in its crystal structure is reduced in diameter in a state charged in a metallic pipe, thereby being elongated, and then heat treated. In the as-formed superconducting wire, crystal orientativity of a bulk formed of the superconductor or its precursor is maintained, whereby it is possible to obtain a superconducting wire having high critical current density. In order to further improve the critical current density, it is effective that the diameter reduction working step and the heat treatment step are alternately repeated a plurality of times.
Hayashi Kazuhiko
Nonoyama Hisao
Bereskin & Parr
Sumitomo Electric Industries Ltd.
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