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

The Korean Society of Superconductivity and Cryogenics (한국초전도저온학회)
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Evaluation of thermal conductivity for High temperature superconductor tape at low temperature

고온초전도 선재의 극저온 열전도도 측정 및 특성평가

  • 김정호 (성균관대학교 금속재료공학부) ;
  • 장석헌 (성균관대학교 금속재료공학부) ;
  • 김규태 (성균관대학교 금속재료공학부) ;
  • 주진호 (성균관대학교 금속재료공학부) ;
  • 나완수 (성균관대학교 전기전자컴퓨터공학부) ;
  • 강형구 (연세대학교 전기전자공학과) ;
  • 고태국 (연세대학교 전기전자공학과)
  • Published : 2002.02.01
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Abstract

The thermal conductivity of Ag and Ag alloys at low temperature (10~110 K) were evaluated by direct measurement technique. It was observed that thermal conductivity decreased with increasing the content of alloying elements such as Mg and Cu. Thermal conductivity of pure Ag tape at 20 K was measured to be 2794 W/m$\cdot$K. On the other hand, the corresponding values of Ag/Al tape and Ag/Al/sus315L tape were 1235 and 352 W/m$\cdot$K, respectively, indicating 2 to 8 times lower than that of pure Ag tape.

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