Proceedings of the KIEE Conference (대한전기학회:학술대회논문집)

The Korean Institute of Electrical Engineers (대한전기학회)
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I-V Characteristics of HTS Conductors with Joints

고온초전도 접합도체들의 I-V 특성에 관한 연구

  • Sohn, Hyung-Hwan (Superconducting Devices & Cryogenics Research Group, KERI) ;
  • Min, Chi-Hyun (Superconducting Devices & Cryogenics Research Group, KERI) ;
  • Lee, Eon-Yong (Superconducting Devices & Cryogenics Research Group, KERI) ;
  • Sim, Ki-Deok (Superconducting Devices & Cryogenics Research Group, KERI) ;
  • Kim, Seok-Ho (Superconducting Devices & Cryogenics Research Group, KERI) ;
  • Seong, Ki-Chul (Superconducting Devices & Cryogenics Research Group, KERI)
  • 손명환 (한국전기연구원 초전도응용연구그룹) ;
  • 민치현 (한국전기연구원 초전도응용연구그룹) ;
  • 이언용 (한국전기연구원 초전도응용연구그룹) ;
  • 심기덕 (한국전기연구원 초전도응용연구그룹) ;
  • 김석호 (한국전기연구원 초전도응용연구그룹) ;
  • 성기철 (한국전기연구원 초전도응용연구그룹)
  • Published : 2006.07.12
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Abstract

Various different types of joining between High Tc superconducting(HTS) tapes were prepared and current-voltage(I-V) characteristic curves were investigated at 77 K, liquid nitrogen temperature. Two typos of HTS tapes wore used, one is no laminated tape(Sumitomo high strength type tape) and the other stainless steel laminated tape(AMSC(American Superconductors Inc.) 3ply tapes) Sample joints were lap-jointed with indium or solder. Joint resistances between Sumitomo tapes with 4-10 mm in length were estimated from I-V curves and in the range of $4-8n{\Omega}$ at 77 K. Joint resistances of AMSC tapes were in the range of $140-170n{\Omega}$, much higher than them of Sumitomo samples. The n-values of jointed HTS tapes were 50% of them with no joint. In AMSC tapes, indium is better than solder as the jointing material.

Keywords