Abstract
Measurements on the thermal diffusivity of cast irons were carried out using a method, in which the surface of cylindrical specimen was heated at the constant rate in an infra-red image furnace and the temperature difference in the radial directions of specimen was measured by seathed thermocouples.
The thermal conductivity of the specimen calculated from the thermal diffusivity measured from room temperature to 873 K showed the nearly constant values described as follows:
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oindentThe value for flaky graphite cast iron decreased from 4.6×10 to 3.3×10 W/K·m with increasing temperature.
Experimental values of thermal conductivity were discussed with respect to the chemical compositions of matrix and the morphology of graphite in the cast irons.
