S1108-2-6 Applicability of micro shot blasting on improvement of cooling performance of heat sink

Abstract

The present study describes an applicability of micro shot blasting as surface modification for improvement of cooling performance of heat sink. Fine silicon carbide grid was used for the impact media since the higher thermal conductivity. Micro shot blasting was applied to the heat sink made from aluminum alloy used as cooling device for a central processing unit of a personal computer. The cooling performance of the heat sink was evaluated on two conditions depending on whether external air flow existed or not, naturally or forced air cooled conditions. As results, it was found that the surface modification with the micro shot blasting was effective for improving the heat transfer of the heat sink at the forced air cooled condition.