Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference (한국전기전자재료학회:학술대회논문집)

The Korean Institute of Electrical and Electronic Material Engineers (한국전기전자재료학회)
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The Effect of Relatively Low Lead Contents on the Phase Formation and Jc values of Bi-2223/Ag Tapes

  • Jiang, C.H. (Materials Engineering Dept., Korea Institute of Machinery & Materials) ;
  • Yoo, J.M. (Materials Engineering Dept., Korea Institute of Machinery & Materials) ;
  • Ko, J.W. (Materials Engineering Dept., Korea Institute of Machinery & Materials) ;
  • Kim, H.D. (Materials Engineering Dept., Korea Institute of Machinery & Materials) ;
  • Chung, H.S. (Dept. of Molecular Science and Technology, Ajou University)
  • Published : 2002.04.25
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Abstract

The effects of relatively low lead content (0.2~0.3) on the 2223 phase formation and transport property of Bi-2223/Ag tapes have been investigated. The results show that lead contents have great impact on the phase assemblage of precursors, subsequently, on the phase formation and transport property of silver sheathed BSCCO-2223 tapes. Powders containing Pb=0.25 and Pb=0.3 resulted in the nearly identical $J_c$ values in fully processed tapes, but leaded to significant difference on the phase formation process. For the case of Pb=0.2, both low conversion fraction of 2212 to 2223 and low $J_c$ value were obtained in final reacted tape, which was probably due to lack of enough liquid phase to facilitate the phase transformation.

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