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REACTION PROCESS IN THE Bi-Pb-Sr-Ca-Cu-O SYSTEM

JI CHUN-LIN XI ZHENG-PING ZHOU LIAN

REACTION PROCESS IN THE Bi-Pb-Sr-Ca-Cu-O SYSTEM

JI CHUN-LIN, XI ZHENG-PING, ZHOU LIAN
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  • Received Date:  04 April 1990
  • Published Online:  28 June 2005

REACTION PROCESS IN THE Bi-Pb-Sr-Ca-Cu-O SYSTEM

  • 1. (1)东北工学院,沈阳,110006; (2)西北有色金属研究院,宝鸡,721014

Abstract: The reaction process of formation of the Bi-Pb-Sr-Ca-Cu-O superconductor by means of a three-step reaction method was studied by high-temperature X-ray diffraction meansurement and DTA technique. The 2212 phase began to form at about 740℃ from the mixture of the Bi-Pb-Sr-Ca-O precursor-CuO, and the 2223 phase at about 825℃. The 2212 phase melted incongruently to the 2201 phase and a liquid phase at about 875℃ and the 2223 phase melted a liquid phase at about 935℃. In the crystallization of the 2212 phase, strong c-orientation forms easily.

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