采用激光脉冲法对新型的功能材料——高导热金刚石陶瓷的导温系数进行了测量;用扫描电镜观察其显微结构,并对导温系数和显微结构的关系进行了探讨;描述了金刚石陶瓷的两种导热模型;对无机非金属晶体材料的热导率峰值和峰值温度的变化趋势进行了探讨;指出改善材料的显微结构是提高其导热性的有效途径 The thermal conductivity of a new type of high thermal conductivity diamond ceramic was measured by laser pulse method. The microstructure was observed by scanning electron microscopy. The relationship between the thermal conductivity and the microstructure was also discussed. Ceramic thermal conductivity of the two models; on the inorganic non-metallic crystal material thermal conductivity peak and peak temperature trends were discussed; pointed out that improving the material microstructure is an effective way to improve its thermal conductivity