J044084 固-液共存状態を利用してSPS成形したAg/ダイヤモンド複合材料の組織と熱伝導率([J04408]知的材料・構造システム(8))

概要

論文の詳細を見る
Diamond-particle-dispersed-silver (Ag) matrix composites were fabricated in solid-liquid co-existent state by Spark Plasma Sintering (SPS) process from the mixture of diamond powders, Ag powders and Si powders. The microstructures and thermal conductivities of the composites fabricated were examined. These composites were all well consolidated by heating at a temperature range between 1113K and 1188K for 0.45ks during SPS process. No reaction at the interface between the diamond particle and the Ag matrix was observed by scanning electron microscopy for the composites fabricated under the sintering conditions employed in the present study. The relative packing density of the diamond-Ag composite fabricated was 95-97% in a volume fraction range of diamond between 40% and 50%. Thermal conductivity of the diamond-Ag composite containing 50vol.% diamond reached 717W/mK, approximately 80% the theoretical thermal conductivity estimated using Maxwell-Eucken's equation.
一般社団法人日本機械学会の論文
2011-09-11