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

한국전기전자재료학회 (The Korean Institute of Electrical and Electronic Material Engineers)
권호 표지

고온 초전 도체의 산화물 코팅 조건 변화에 따른 초전도 특성의 변화

Superconducting properties through ceramic coating condition on high-Tc superconducting tapes

  • 이남진 (한국전기연구소 초전도응용 연구그룹) ;
  • 하동우 (한국전기연구소 초전도응용 연구그룹) ;
  • 하홍수 (한국전기연구소 초전도응용 연구그룹) ;
  • 장현만 (경상대학교 전기공학과) ;
  • 오상수 (한국전기연구소 초전도응용 연구그룹) ;
  • 손명환 (한국전기연구소 초전도응용 연구그룹) ;
  • 권영길 (한국전기연구소 초전도응용 연구그룹) ;
  • 김상현 (경상대학교 전기공학과) ;
  • 류강식 (한국전기연구소 전략기술연구단)
  • 발행 : 2000.07.01
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초록

Currently, Bi-2223 HTS tape is capable of being fabricated in longer than 100m length by industrial processes. But there are some problems in heat treatment of the degree of longer than 100m tape, which is in term of volume occupied with specimen in furnace. The effects of ceramic coating with variable slurry states were studied in Bi-2223 high-temperature superconductor. The HTS tapes coated with oxide were prepared by using dip-coating method on slurry state. Critical current(I$_{c}$) of tapes coated with ceramic materials were equal with 11.5A at 77K after first heat treatment as different slurries. For final heat treatment, Critical current of HTS tapes coated with zirconia oxide mixed in PMMA and PVA organic solute were 20.8A at 77K. The breakdown voltage of HTS tapes coated with zirconia oxide were 3kV in air and 4~7kV in L$N_2$.>.

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