Thermal diffusivity of high-temperature melts (specimen enclosed in a quartz container)
Nobuyuki Araki, Yuta Tozawa, Da Wei Tang, Yasuhiro Hayakawa
An effective and convenient method for measuring thermal diffusivity of high-temperature melts is developed by filling a transparent quartz container with the melt. The front surface of the specimen cell is heated by a laser pulse, and the thermal radiation from both the rear surfaces of the specimen is measured by an infrared detector. By considering the effect of the thickness of the quartz container, it is found that Parker’s formula for a single-layer specimen is suitable for the present specimen cell. The thermal diffusivities of gallium, indium, and gallium antimonide have been measured and the data have been compared with published values.