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

The Korean Institute of Electrical and Electronic Material Engineers (한국전기전자재료학회)
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The effect of heat treatment condition on superconducting property and phase analysis of Bi-2223 tapes

Bi-2223 초전도 선재의 열처리에 따른 초전도 특성 및 상분석

  • 최정규 (경성대학교) ;
  • 하홍수 (한국 전기연구원 초전도응용연구그룹) ;
  • 이동훈 (한국 전기연구원 초전도응용연구그룹) ;
  • 양주생 (한국 전기연구원 초전도응용연구그룹) ;
  • 황선역 (한국 전기연구원 초전도응용연구그룹) ;
  • 하동우 (한국 전기연구원 초전도응용연구그룹) ;
  • 오상수 (한국 전기연구원 초전도응용연구그룹) ;
  • 권영길 (한국 전기연구원 초전도응용연구그룹) ;
  • 이세종 (경성대학교)
  • Published : 2003.05.23
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Abstract

Phase transformation of Bi-2223 tape during the final heat treatment has been investigated through the various duration time of heat treatment in a specially designed 3-step heat treatment. It was found that the phase assemblage in the sintering was determined by the sintering time and temperature. In this study, sintering time was changed to optimize the Bi-2223 phase assemblage, and acquire high critical current density. High critical current samples with Ic = 85 A and Je = 8.9 kA/$cm^2$ have been measured at 77K and self-field for 55-filament tapes sintered by optimum condition.

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