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pISSN : 1598-706X / eISSN : 2288-8381


(논문)연구논문

한국주조공학회지 (17권1호 93-99)

The Production of Metal Matrix Composites by Using the EPC Process;Particle Behavior at Solid-Liquid Interface

소실모형주조법에 의한 금속기 복합재료의 제조;고액계면과 입자거동에 관하여

Jong-lk Park*, Young-Seob Kim**, Jeong-Min Kim***, Dong-Gyu Kim

Dong-A Univ., *Samsung Motors co., **Nam Yang Steel co., ***University of Wisconsin~Madison

Abstract

A possibility of production of aluminium matrix composites by using the lost foam process was investigated. Silicon carbide particles, graphite particles, and stainless steel wires were used as reinforcement materials. The reinforcement materials were introduced to the polystyrene to form patterns via injection molding process. The results obtained from this experiment can be summarized as follows. In Al/SiCp system, the particles with the radius of 100μм and over were entrapped in the matrix in the case of upward freezing of which solidification direction was opposite to floating direction of the particles. And few particles were entrapped in the matrix in downward freezing. In Al/graphite system, almost no particles were entrapped in the matrix except the area chill attatched. When the thickness of polystyrene slice was 4mm in Al/stainless steel wire system, the floating tendency of fibers was observed to increase as the distance from the ingate was increased.

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