Fe-TiC 복합재료분말의 방전플라즈마소결
Spark Plasma Sintering of Fe-TiC Composite Powders
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초록
Fe-TiC composite powder was fabricated by high-energy milling of powder mixture of (Fe, TiC) and(FeO, TiH2, C) as starting materials, respectively. The latter one was heat-treated for reaction synthesis of TiC phaseafter milling. Both powders were spark-plasma sintered at various temperatures of 680-1070oC for 10 min. with sinteringpressure of 70 MPa and the heating rate of 50oC/min. under vacuum of 0.133 Pa. Density and hardness of the sinteredcompact was investigated. Fe-TiC composite fabricated from (FeO, TiH2, C) as starting materials showed bettersintered properties. It seems to be resulted from ultra-fine TiC particle size and its uniform distribution in Fe-matrixcompared to the simply mixed (Fe, TiC) powder.
Abstract
Fe-TiC composite powder was fabricated by high-energy milling of powder mixture of (Fe, TiC) and(FeO, TiH2, C) as starting materials, respectively. The latter one was heat-treated for reaction synthesis of TiC phaseafter milling. Both powders were spark-plasma sintered at various temperatures of 680-1070oC for 10 min. with sinteringpressure of 70 MPa and the heating rate of 50oC/min. under vacuum of 0.133 Pa. Density and hardness of the sinteredcompact was investigated. Fe-TiC composite fabricated from (FeO, TiH2, C) as starting materials showed bettersintered properties. It seems to be resulted from ultra-fine TiC particle size and its uniform distribution in Fe-matrixcompared to the simply mixed (Fe, TiC) powder.
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