Abstract
A measurement method for specific heat capacity and hemispherical total emissivity of electrically conductive materials with pulse current heating is investigated, in which a ribbon-shaped sample is heated up to 3000K in a subsecond-duration experiment. Specific heat capacity and hemispherical total emissivity of the sample are calculated from the time variations of heat generations and surtace temperature of the sample measured during heating and cooling phases. The true surface temperature of the rihhon-shaped samples is obtained with a radiation thermometer: the directional spectral emissivity of the sample surface is measured using a hemisplicrical mirror centered at the sample surface. Measurements are performed for POCO AXM-5Ql graphite in the temperature range from 1500 to 3000 K.
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Matsumoto, T., Ono, A. Specific heat capacity and emissivity measurements of ribbon-shaped graphite using pulse current heating. Int J Thermophys 16, 267–275 (1995). https://doi.org/10.1007/BF01438977
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DOI: https://doi.org/10.1007/BF01438977