Journal of the American Ceramic Society, Vol.85, No.5, 1312-1314, 2002
Effects of heat treatment on the surface microstructure and mechanical properties of MoSi2-TiC0.7N0.3 composites
MoSi2-TiC0.7N0.3 composites were prepared by hot-pressing under vacuum, and MoSi2-TiC0.7N0.3 Composites were heat-treated in air at various temperatures. SEM analysis showed that the surface microstructure of the MoSi2-TiC0.7N0.3 composite changed because of the oxidation of MoSi2 and TIC0.7N0.3 and that many TiO2 whiskers appeared on the surfaces of the composites. Compared with the non-heat-treated MoSi2-TiC0.7N0.3, the bending strength of the heat-treated MoSi2-TiC0.7N0.3 was significantly improved.