LU Lin, JIANG Li, FENG Qing, WANG Heping

(School of Materials Science and Engineering, Jingdezhen Ceramic Institute, Jingdezhen Jiangxi 333403, China)

Abstract:It is not easy to work out the real thermal conductivity of the solid phase in a particulate material such as porcelain clay,sand, or ceramic powder due to its unknown concrete components. This paper came up with a method to measure the thermal conductivity of the solid phase of a particulate material. A bar probe was used to measure the thermal conductivity of a particulate material in both absolute dry and wet conditions. Then the thermal conductivity of the solid phase in the particulate material could be calculated from the measured results. An experiment was conducted to measure the thermal conductivity of Al2O3 powder. Comparing the experiment results with the theoretical data showed good consistency between the calculated value and the theoretical value.

Key words：thermal conductivity; particulate materials; thermal probe