Progress in Superconductivity and Cryogenics (한국초전도ㆍ저온공학회논문지)

The Korean Society of Superconductivity and Cryogenics (한국초전도저온학회)
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Fabrication and performance of 100 m Class Bi-2223 High Temperature Superconducting Tape

100 m급 Bi-2223 고온초전도 선재 제조 및 특성

  • 하홍수 (한국전기연구소 초전도응용연구그룹) ;
  • 오상수 (한국전기연구소 초전도응용연구그룹) ;
  • 하동우 (한국전기연구소 초전도응용연구그룹) ;
  • 장현만 (한국전기연구소 초전도응용연구그룹) ;
  • 이남진 (한국전기연구소 초전도응용연구그룹) ;
  • 류강식 (한국전기연구소 초전도응용연구그룹) ;
  • 이준석 (대성전선 기술연구소)
  • Published : 1999.10.01
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Abstract

For large scale applications of high temperature superconductor (HTS) such as transmission cables, motors and generators, long length of flexible HTS conductor is required. Currently, Bi-2223 HTS tape is capable of being fabricated in longer than 100 m length by industrial processes. In this study, we fabricated 100 m 19 filamentary Bi-2223 ($Bi_{1.8}Pb_{0.4}Sr_2Ca_2O_{10+x}$) HTS tape by PIT (Power in Tube) process. Critical current(IC) of this long length tape was measured 18.5 A at 77K, self field. Critical current of 100 m length tape was mainly resulted from the increase of inhomogeneity in oxide from the increase of inhomogeneity in oxide layer. Engineering critical current (Je=Ic/total tape cross-section area) that is important factor for practical applications and fabrication cost was measured 2.2 kA/cm2.

Keywords

References

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