標題: Intrinsic thermal stability and quenching recovery of thin-film superconductors with thermal boundary resistance
作者: Wu, JP
Chu, HS
交大名義發表
機械工程學系
National Chiao Tung University
Department of Mechanical Engineering
關鍵字: thermal boundary resistance;thermal stability;thin-film superconductor
公開日期: 1-五月-1997
摘要: The stability behaviour of a thin-film superconductor under a localized release of thermal disturbance is investigated. Two-dimensional conjugate film/substrate conduction equation with anisotropic thermal conductivity of the film, and Joule heat are employed to investigate effects of substrate and thermal properties on the intrinsic stability and quenching recovery. To consider the thermal boundary resistance between film and substrate, an interfacial-layer model (ILM) with very low diffusivity and an acoustic mismatch model (AMM) are employed. Results show that the thermal boundary resistance influences strongly the intrinsic stability. Thermal boundary resistance increases intrinsic stability if the thermal conductivity of the substrate or the disturbance energy is large. Higher Riot numbers and thermal conductivity ratios of film to substrate in longitudinal direction influence stability favorably. We demonstrate also that operation of a film/substrate system, such as YBCO/MgO, is either intrinsically stable or irrecoverably unstable.
URI: http://hdl.handle.net/11536/582
ISSN: 0368-4466
期刊: JOURNAL OF THERMAL ANALYSIS
Volume: 48
Issue: 5
起始頁: 951
結束頁: 969
顯示於類別:期刊論文


文件中的檔案:

  1. A1997XH14700003.pdf