Infiltration Time Effect of Pressureless Infiltration Preparation of Al/SiCp Ceramic Matrix Composites

Microstructure,density and rigidity of Al/SiCp ceramic matrix composites prepared by pressureless infiltration.were investigated in this paper.The result indicates that the infiltration in due course of time made Si and Mg diffusion and interface reaction conducted fully,which increased interface wetting property and decreased interface loose and pore,and advanced the aluminium alloys infiltration.Holding one hour at proper temperature got full infitration,but poor density and low rigidity,while holding three hours got pulverization so two hours shall be a proper parameter.