New Theory of Transformation Induced Grain Growth in Porous SiC
- and -SiC powder mixtures with 0.3 mass% of AlB2 were sintered at 2200oC. Porous materials having 43-45% porosity were obtained. Grains in the powder mixtures grew into plate-shaped grains of 6-8 m size, and -SiC transformed into -SiC. Free energy due to the polytype transformation enhanced material transport very much. The new rate theory proposed here explained very well the behavior of the grain growth.
Katsutoshi Komeya, Yi-Bing Cheng, Junichi Tatami and Mamoru Mitomo
H. Tanaka "New Theory of Transformation Induced Grain Growth in Porous SiC", Key Engineering Materials, Vol. 403, pp. 169-172, 2009