Abstract
The thermal diffusivity of aluminum nitride was measured within the range from 1200° to 1630°C by electron beam method. The density of samples was from 83% to 95% of theoretical density. Thermal conductivity values were calculated from the thermal diffusivity data. The values were from 0.0204 (1250°C) to 0.0165 (1630°C) cal/cm·sec·deg. Thermal conductivity data of aluminum nitride in this temperature range can not be found in the literature, however, Taylor and Lenie have reported the data only within the temperature range from 200° to 800°C. Extrapolation of their values seems to be in fair contrast to the present author's.
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