Proceedings of the Korea Institute of Applied Superconductivity and Cryogenics Conference (한국초전도저온공학회:학술대회논문집)

The Korean Society of Superconductivity and Cryogenics (한국초전도저온학회)
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A study on the mechanical properties of Bi-(Pb)-Sr-Ca-Cu-O superconductor tape

Bi-(Pb)-Sr-Ca-O 초전도 선재의 기계적 특성에 관한 연구

  • 김중석 (성균관대학교 금속재료공학부) ;
  • 지봉기 (성균관대학교 금속재료공학부) ;
  • 김정호 (성균관대학교 금속재료공학부) ;
  • 박형상 (성균관대학교 금속재료공학부) ;
  • 임준형 (성균관대학교 금속재료공학부) ;
  • 주진호 (성균관대학교 금속재료공학부) ;
  • 나완수 (성균관대학교 금속재료공학부)
  • Published : 2000.02.01
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Abstract

The critical current density, Jc, of superconductor tape significantly depends on microstructural evolution during mechanical deformation. In this study, we fabricated Bi-2223 superconductor tape by PIT technique, and investigated mechanical properties of mono- and 61-filamentary tapes and their joined tapes. The strength of mono-filament tape was higher than those of 61-filament tape was higher than those of 61-filament tape, respectively. On the other hand, elongation of mono-filament tape, respectively. On the other hand, elongation of mono-filament tape was lower than 61 filament tape. The joined tapes shows lower strength and irreversible strain than those of unjoined tapes. The reduced strength and irreversible strain for joined tape is probably related to the induced damages such as irregular interface and Ag-instrusion in the transition region which acts as a stress concentration.

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