Preparation and Properties of 15R-Sialon by SHS

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J. Korean Ceram. Soc. > Volume 31(4); 1994 > Article

Journal of the Korean Ceramic Society 1994;31(4): 407.

SHS법에 의한 15R-Sialon의 제조 및 특성

김상섭, 이온영, 이철규, 전병세

경남대학교 공과대학 무기재료공학과

Preparation and Properties of 15R-Sialon by SHS

ABSTRACT

Compacts were prepared using the SHS(Self-propagating High-temperature Synthesis) method and nitrided at temperatures range from 145$0^{circ}C$ to 175$0^{circ}C$, and pressed at 180$0^{circ}C$ under N2 atmosphere. The samples were characterized for bulk density, porosity, pore size and distribution, phase composition, microstructure and fracture toughness. Compacts were composed of whiskers, which showed a good candidate for the composite materials. The major phases of the compacts nitrided at 175$0^{circ}C$ and pressed at 180$0^{circ}C$ were 15R-sialon with a large aspect ratio.