Study on the Method for Predicting Surface Contact Ratio Using ECR

Abstract

Thermal contact resistance (TCR) is an important parameter in the thermal management of electronics. However, the accuracy of the TCR prediction should be improved because the method for calculating the contact ratio between solids at low pressures has not yet been established. Therefore, we focus on the use of electric contact resistance (ECR) to calculate the contact ratio. In this study, the measured TCR are compared with the TCR calculated from the conventional prediction equation with the contact ratio from the measured ECR.