Fabrication and Characteristics of SiCp/AC8A Composites by Pressureless Metal Infiltration Process

무가압함침법에 의한 SiCp/AC8A 복합재료의 제조 및 특성

  • 김재동 (경상대학교 해양산업연구소) ;
  • 고성위 (부경대학교 기계공학부)
  • Published : 2000.04.01


The SiCp/AC8A composites were fabricated by the pressureless metal infiltration process successfully. The effect of additional Mg, which were mixed with SiC particles to promote interfacial wetting between the reinforcement and matrix alloy, and particle size on the mechanical properties was investigated. By increasing the additional Mg content the hardness of SiCp/AC8A composites was increased due to the hard reaction products, but the bending strength was decreased by the excess reaction of Mg and high porosity level when the additional Mg content is over 7%. The Hardness and bending strength was increased by decreasing the size of SiC particle.