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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Dependence of thermal cycling and axial strain on HTS PIT tapes

고온초전도 PIT선재의 반복 열응력 및 변형률 의존성

  • 하홍수 (한국전기연구원 초전도응용연구그룹) ;
  • 이동훈 (한국전기연구원 초전도응용연구그) ;
  • 최정규 (한국전기연구원 초전도응용연구그) ;
  • 양주생 (한국전기연구원 초전도응용연구그) ;
  • 황선역 (한국전기연구원 초전도응용연구그) ;
  • 김상철 (넥상스코리아 기술연구) ;
  • 하동우 (한국전기연구원 초전도응용연구그) ;
  • 오상수 (한국전기연구원 초전도응용연구그) ;
  • 권영길 (한국전기연구원 초전도응용연구그룹)
  • Published : 2003.10.01
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Abstract

The effect of axial strain and thermal cycling on the critical current is investigated for the Bi-2223/Ag PIT tapes. The axial strain was applied to the tapes by the U-shape sample holder. Two kinds of Bi-2223/Ag tapes with different Ag sheath are used to know the effect of sheath alloying for the tensile strain. The influence of thermal cycling between room temperature and 77 K on critical current are examined. Critical current is drastically decreased for Ag/alloy and Ag/alloy/alloy sheathed tapes at tensile strain above 0.22％ and 0.3％, respectively.

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