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

The Korean Society of Superconductivity and Cryogenics (한국초전도저온학회)
권호 표지

Development of km class Bi-2223/Ag HTS tapes

1km급 Bi-2223/Ag 고온초전도 선재 개발 연구

  • 하동우 (한국전기연구원 초전도응용연구그룹) ;
  • 오상수 (한국전기연구원 초전도응용연구그) ;
  • 김상철 (넥상스코리아 기술연구) ;
  • 양주생 (한국전기연구원 초전도응용연구그) ;
  • 황선역 (한국전기연구원 초전도응용연구그) ;
  • 이동훈 (한국전기연구원 초전도응용연구그) ;
  • 최종규 (한국전기연구원 초전도응용연구그) ;
  • 하홍수 (한국전기연구원 초전도응용연구그) ;
  • 권영길 (한국전기연구원 초전도응용연구그룹)
  • Published : 2003.10.01
Download PDF
⟨ Previous Next ⟩

Abstract

1 km length of Bi-2223/Ag superconducting wires were fabricated by stacking, drawing process with advanced heat-treatment schedules. Intermediate annealing was carried out to increase the homogeneity and uniformity of the superconducting filaments embedded in the silver matrix. Phase modification from tetragonal to orthorhombic Bi-2212 by pre heat treatment(PHT) was executed to improve the texture and phase transformation of Bi-2223. Drawing stress was measured to Predict the sausaging and stress limit, Rolling parameters such as thickness, width and winding tension were investigated to roll the tape with uniformity. Critical current of 1 km length of superconducting tapes was measured about 50 A continuously after final sintering.

Keywords