Title:
METHOD FOR MANUFACTURING Bi2223 SUPERCONDUCTING WIRE ROD
Document Type and Number:
WIPO Patent Application WO/2008/056498
Kind Code:
A1
Abstract:
A method for manufacturing a Bi2223 superconducting wire rod has a preparation
step of preparing a powdery precursor (11) having Bi2212 as a main phase and the
rest composed of a Bi-2223 phase and a non-superconducting phase, a filling step
of filling a metal tube with the precursor under a pressure of 1,000Pa or less,
and a sealing step of sealing the metal tube filled with the precursor under a pressure
of 1,000Pa or less. Entry of an impurity gas is reduced and a critical current
value is improved.
Inventors:
KIKUCHI, Masashi (1-3 Shimaya 1-chome, Konohana-ku, Osaka-sh, Osaka 24, 5540024, JP)
Application Number:
JP2007/069649
Publication Date:
May 15, 2008
Filing Date:
October 09, 2007
Export Citation:
Assignee:
SUMITOMO ELECTRIC INDUSTRIES, LTD. (5-33 Kitahama 4-chome, Chuo-ku Osaka-sh, Osaka 41, 5410041, JP)
住友電気工業株式会社 (〒41 大阪府大阪市中央区北浜四丁目５番３３号 Osaka, 5410041, JP)
住友電気工業株式会社 (〒41 大阪府大阪市中央区北浜四丁目５番３３号 Osaka, 5410041, JP)
International Classes:
H01B13/00; C01G1/00; C01G29/00; H01B12/10; H01F6/06; H01B13/00; C01G1/00; C01G29/00; H01B12/10; H01F6/06
Attorney, Agent or Firm:
NAKANO, Minoru et al. (1-3 Shimaya 1-chome,Konohana-ku, Osaka-shi, Osaka 24, 5540024, JP)
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