MICROSTRUCTURE　AND　Jc　OF　Y－Ba－Cu－O　SUPERCONDUCTOR　AFTER　Po2－ALTERNATIVE　HEAT　TREATMENT|Chen Kanghua, Huang Peiyun-《中国有色金属学报》官方网站|全网首发|论文开放获取

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中国有色金属学报(英文版)

Transactions of Nonferrous Metals Society of China

Vol. 5 No. 2 June 1995

MICROSTRUCTURE　AND　J_c　OF　Y－Ba－Cu－O　SUPERCONDUCTOR　AFTER　Po₂－ALTERNATIVE　HEAT　TREATMENT

Chen Kanghua; Huang Peiyun

（Powder Metallurgy Research Institute; Central South University of Technology; Changsha 410083）

Abstract:The effect of Po₂-alternative heat treatment on the melting point,the microstructure and the J_cof YBa₂Cu₃O_7-δ superconductor has been investigated. It is found that the melting point of YBa₂Cu₃O_7-δdecreasedto 900℃ when Po₂ decreased to 10 Pa. The texture of the YBa₂Cu₃O_7-δpolycrystal could occur at temperatures lower than 920℃ after Po₂ -alternative treatment.

Key words: ceramic superconductor Yba₂Cu₃O_7-δ preparation texture

ISSN 1004-0609
CN 43-1238/TG
CODEN: ZYJXFK

ISSN 1003-6326
CN 43-1239/TG
CODEN: TNMCEW