Measurements of the DyBCO/substrate thermal conductance in coated conductors

作者: L Antognazza , M Decroux , A Badel , C Schacherer , M Abplanalp

DOI: 10.1088/0953-2048/25/10/105002

关键词: Thermal transmittanceCondensed matter physicsThermal contact conductanceElectrical resistance and conductanceThermal resistanceOscillationElectrical conductorThermal conductivityMaterials scienceThermal conduction

摘要: We present a new technique to measure the thermal conductance of an interface between two layers which are electrically isolated. This method was used superconducting layer and Hastelloy substrate in coated conductors. A line is heated by AC current superposed DC current. The temperature oscillation this line, as function power frequency, simulated with simple model consisting heater, bath, all coupled conductance. predicts that amplitude oscillation, certain frequency range, strongly influenced interface. measurements performed on conductor good agreement prediction model. found value 320?W?cm?2?K?1 for per unit area at room temperature. confirmed where deduced from electrical resistance change three parallel strip lines. One lines other thermometer different locations.

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