무전해 도금을 이용한 AlN/Cu 복합재료 제조와 AlN 입자크기에 따른 복합재의 열특성 평가 = Fabrication of AlN/Cu Composites Using Electroless Plating and Evaluation of Their Thermal Properties according to AlN Particle Size

다국어 초록 (Multilingual Abstract)

AlN/Cu composite powders with a core-shell structure were synthesized by a new technique using electroless plating of Cu on AlN particles and consolidated by spark plasma sintering (SPS). Dependence of the thermal conductivity and coefficient of thermal expansion (CTE) of the AlN/Cu composites on the particle size of AlN were studied. The thermal conductivity and coefficient of thermal expansion were significantly dependent on the existence of both boundary pores surrounding the Cu-coated AlN particles and the internal pores of the AlN particles. In order to eliminate the pores, the temperature and pressure of SPS were increased and the AlN particles were heat-treated at high temperature. Adoption of the core-shell AlN/Cu composite powders facilitated the fabrication of AlN/Cu composites with low porosity and uniform distribution in the AlN in Cu matrix.