MICROSTRUCTURE　AND　J<SUB>c</SUB>　OF　Y－Ba－Cu－O　SUPERCONDUCTOR　AFTER　Po<SUB>2</SUB>－ALTERNATIVE　HEAT　TREATMENT

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

Vol. 5 No. 2 June 1995

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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

Superintended by The China Association for Science and Technology (CAST)
Sponsored by The Nonferrous Metals Society of China (NFSOC)
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