Fig. 1b exhibits the fracture surface of the composite
under a sintering time of 4 h it can be seen that no exposed SiC
particles or coarse silicon particles exist in the fracture surface,indicating that no cracks pass through silicon particles, the interfacial bonding in SiC/matrix, Si/matrix are relatively strong, and the
size distribution of silicon particle precipitating from hypereutectic
Ale35Si alloy in this preparation condition is optimal.