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J. Korean Ceram. Soc. > Volume 23(6); 1986 > Article
Journal of the Korean Ceramic Society 1986;23(6): 59.
코디어라이트-SiC 위스커 복합재료의 기계적 성질과 강화기구
강대갑, Weisskopf1
대한중석광업 주식회사
1Max-Planck 연구소 서독
Mechanical Properties and Strengthening Mechanisms of Cordierite-SiC Whisker Ceramic Composites
Flexural strength fracture toughness and strengthening mechanisms of cordierite ceramics reinforced by SiC whiskers up to 40vol% were investigated. The specimens were hot pressed at Ar atmosphere. The porosity increased with the SiC whisker content. Flexural strength and single edge notch beam fracture toughness were measured up to 1,000$^{circ}C$. Extrapolating to zero porosity the reinforced composites exhibited in-creasings in flexural strength and fracture toughness with the SiC whisker content. The composites were strengthened mainly by load transfer crack impediment and partially by crack deflection mechanisms. Impurities played an important role in determining the mechanical properties of the composites.
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