MICROSTRUCTURE　AND　J_c　OF　Y－Ba－Cu－O　SUPERCONDUCTOR　AFTER　P_（o_2）－ALTERNATIVE　HEAT　TREATMENT  

作　　者：Chen, Kanghua  Huang, Peiyun 

机构地区：[1] Central South Univ of Technology, Changsha, China

出　　处：《中国有色金属学会会刊：英文版》1995年第2期81-84,共4页Transactions of Nonferrous Metals Society of China

摘　　要：ＭＩＣＲＯＳＴＲＵＣＴＵＲＥＡＮＤＪ_ｃＯＦＹ－Ｂａ－Ｃｕ－ＯＳＵＰＥＲＣＯＮＤＵＣＴＯＲＡＦＴＥＲＰ_（ｏ_２）－ＡＬＴＥＲＮＡＴＩＶＥＨＥＡＴＴＲＥＡＴＭＥＮＴ￥Ｃｈｅｎ，Ｋａｎｇｈｕａ；Ｈｕａｎｇ，Ｐｅｉｙｕｎ（ＰｏｗｄｅｒＭｅｔａｌｌｕｒｇｙＲ?..The effect of P_(o_2)-alternative heat treatment on the melting point,the microstructure and the J_cof YBa2Cu3O7-δ superconductor has been investigated. It is found that the melting point of YBa2Cu3O7-δdecreasedto 900℃ when P_(o_2) decreased to 10 Pa. The texture of the YBa2Cu3O7-δpolycrystal could occur at temperatures lower than 920℃ after P_(o_2) -alternative treatment.

关 键 词：ceramic SUPERCONDUCTOR Yba₂Cu₃O_7-δ preparation TEXTURE 

分 类 号：TG111[金属学及工艺—物理冶金]