Effects of Physical Properties of Interstitial Material and Mean Nominal Contact Pressure on Behaviors of Thermal Contact Resistance of Contacting Metals

摘要

The thermal contact resistance (TCR) or the thermal contact conductance (TCC) plays an important role in cooling of electronic devices with high heat fluxes. In such systems, an interstitial material is often introduced between the heat sink and the heat source. However, heat transfer at the interface with waviness is so complicated that the mechanism has not been elucidated yet. In the present study, for the mean nominal contact pressure p{sub}m ≈ 0.1～0.8MPa, the effects of the thermal conductivity λ and the thickness δ of silicone elastomer and grease on TCC have been investigated experimentally.