Verfahren zur Herstellung eines Bismut-Supraleiters.
摘要
Disclosed herein is a method of preparing a bismuth superconductor including the steps of mixing raw materials for forming a bismuth superconductor with each other to obtain mixed powder, heat treating the mixed powder, pulverizing the mixed powder and then covering the mixed powder with a metal sheath. The mixed powder covered with the metal sheath is prepared to have a 2223 composition in a composition of Bi-Sr-Ca-Cu or (Bi,Pb)-Sr-Ca-Cu and to contain a superconducting phase which is mainly composed of a 2212 phase, and is pulverized into a mean particle diameter of not more than 1 mu m with no conversion of the 2212 phase to an amorphous state.
申请公布号
DE69104921(D1)
申请公布日期
1994.12.08
申请号
DE1991604921
申请日期
1991.07.12
申请人
SUMITOMO ELECTRIC INDUSTRIES, LTD., OSAKA, JP
发明人
SATO, KENICHI, C/O OSAKA WORKS OF SUMITOM, KONOHANA-KU, OSAKA, JP;UEYAMA, MUNETSUGU, C/O OSAKA WORKS OF SUMITOMO, KONOHANA-KU, OSAKA, JP