Mechanical Properties of <TEX>$Al_2O_3-SiC$</TEX> Whisher Composite Materials

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J. Korean Ceram. Soc. > Volume 23(3); 1986 > Article

Journal of the Korean Ceramic Society 1986;23(3): 62.

$Al_2O_3-SiC$ 위스커 복합재료의 기계적 특성

강대갑, 권오종¹, Weisskopf²

대한중석광업주식회사
¹경북대학교 금속공학과
²Max-Planck 연구소

Mechanical Properties of $Al_2O_3-SiC$ Whisher Composite Materials

ABSTRACT

Mechanical properties of $Al_2O_3$ based composite ceramics reinforced by SiC whiskers up to 40% by volume we-re investigated. Specimens were hot pressed at $1, 500^{circ}C$ under 28.5MPa for 30min in Ar atmosphere. Porosities room temperaturefracture toughnesses and flexural strengths up $1, 000^{circ}C$ were measured. Porosities were increa-sed as the SiC whisker cortent increased. After compensating the effect of porosities that means extrapolated in zero porosities the reinforced composites exhibited increases in flexural strength and fracture toughness as the whi-sker content increased, .