Evaluation of Interfacial Thermal Resistance of Al-AlN Composites by Using Image-Based Calculation

Abstract

Interfacial thermal resistance of Al-AlN composites was evaluated by comparing the measured thermal conductivity and the simulated thermal conductivity. Al-10vol.%AlN and Al-20vol.%AlN composites were fabricated by spark plasma sintering. Effective thermal conductivity was measured with the steady state thermal conductivity measuring device. Effective thermal conductivity was also simulated by using FE-SEM image and the measured relative density. Comparing the measured thermal conductivity and the simulated thermal conductivity, interfacial thermal resistance in Al-AlN composites was evaluated as about 1.27-6.2510-9 m2K/W.

Evaluation of Interfacial Thermal Resistance of Al-Si Alloy by Using Image-Based Simulation

“…In addition, the thermal resistance at the interface within the alloys affects the thermal conductivity of the material, so it is important for the thermal design of the material. In the two-phase materials, reflection and scattering occur at the interface of two different substances, and interfacial thermal resistance greatly affects TC of material [1][2][3][4][5]. However, it is difficult to measure interfacial thermal resistance in materials, and few data have been reported.…”