화학공학소재연구정보센터
Journal of Materials Science, Vol.30, No.4, 1005-1008, 1995
Strengthening of Silicon-Carbide by Surface Compressive Layer
Silicon carbide ceramics containing 4.7 wt% WC and 0.3 wt% Co were fabricated by hot-pressing with various additives (B, AlN, and polycarbosilane). Addition of WC and Co liquid phase resulted in considerable increase in flexural strength up to 1085 MPa for the 1 wt% AlN, 0.5 wt% B, and 20 wt% polycarbosilane-added specimen. The improved flexural strength was a result of surface compressive layer. The surface compressive layer was introduced by the liquid flow phenomenon during hot pressing.