Thermal Conductivity Measurement of the AlN Ceramics at the Grain Scale Using Thermoreflectance Technique
The thermal conductivity at the micrometer-scale of AlN ceramics with eliminated grain boundary phase was measured by the thermoreflectance technique with periodic heating. Thermal conductivities were ranged from 160 to 260 W/m•K and an average value of 201 W/m•K was obtained from a 22 m2 area. The variation in the thermal conductivities was related to the individual AlN grains and grain boundary characteristics.
Katsutoshi Komeya, Yi-Bing Cheng, Junichi Tatami and Mamoru Mitomo
S. K. Lee et al., "Thermal Conductivity Measurement of the AlN Ceramics at the Grain Scale Using Thermoreflectance Technique", Key Engineering Materials, Vol. 403, pp. 65-67, 2009