16:10 〜 16:30
[16D-T17-02] Preparation of Carbon Fiber Dispersed Tool Steel Composites Prepared by Spark Plasma Sintering and Evaluation of Thermal Conductivity
キーワード：Steel matrix composites, Spark plasma sintering, Thermal Conductivity
In this study, carbon fiber dispersed tool steel composites were prepared by mixing long and short carbon fibers with tool steel (40CrMoV51) powder and then sintered by spark plasma sintering. Electroless copper plating was applied to the carbon fibers to improve adhesion between the carbon fibers and steel during sintering and to suppress interfacial reactions. The microstructure of the copper and carbon fibers in composites was analyzed using SEM and EDS. The thermal conductivity of the composites was measured to investigate the effects of carbon fiber orientation and copper plating on the properties of the composites. The thermal conductivity of the composites in the direction perpendicular to the pressure applied during spark sintering was higher than that of monolithic tool steel.