MORPHOLOGY OF AMORPHOUS SILICA DURING ALUMINUM REACTIVE PENETRATION

1. IntroductionSiC./AI composite is one of the important systems in the particle--reinforced metalmatrix composites. The more attention was focused on the interface between SiC particleand aluminum alloy1--81. A thin layer amorphous silica was found at the surface of SiCparticles4t6,8], which is beneficial to the fabrication of SiC/AI. This has two reasons.Firstly, Sioz may protects SiC from liquid aluminum etching and has good wettabilityto aluminum, and then oxygen has a strong affin…