Experimental study of thermal contact resistance between AlN and Kovar alloy by laser flash method

In this paper, the thermal contact resistance of solid interface between AlN and Kovar alloy and some main influencing factors of it were investigated. The thermal contact resistance of the interface between AlN ceramic and Kovar alloy decreases with increasing temperature and increasing pressure respectively, and thermal contact resistance between the unpolished samples is higher than that between polished samples. A function relation between pressure P applied on the AlN ceramic and Kovar alloy interface and the thermal contact resistance R is also presented.