HIGH TEMPERATURE OXIDATION BEHAVIOR OF Ti3SiC2/SiC COMPOSITES

The isothemal and cyclical oxidation behaviors of Ti₃SiC₂/SiC composites with different contents of SiC in air were investigated at 960℃.The oxidation testing showed that the content of SiC was important to oxidation resistance of Ti3SiC2/SiC composites.XRD and SEM indicated that the scale was composed of an outer layer of coarse-grained TiO2 (rutile) and an inner layer of a mixture of fine-grained TiO2 and SiO2 (tridymite).