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J. Korean Ceram. Soc. > Volume 44(4); 2007 > Article
Journal of the Korean Ceramic Society 2007;44(4): 230.
doi: https://doi.org/10.4191/kcers.2007.44.4.230
첨가제의 조성과 함량이 코디어라이트 세라믹스의 소결밀도와 압축강도에 미치는 영향
장두희, 임광영, 김영욱
서울시립대학교 신소재공학과
Effects of Additive Composition and Content on Sintered Density and Compressive Strength of Cordierite Ceramics
Doo-Hee Jang, Kwang-Young Lim, Young-Wook Kim
Department of Materials Science and Engineering, the University of Seoul
ABSTRACT
Cordierite ceramics were fabricated via a reaction sintering process using ceramics-filled polysiloxane as a precursor for cordierite ceramics. In this study, the effects of the additive composition, additive content, and sintering temperature on the sintered density and compressive strength of cordierite ceramics have been investigated The sintered densities of reaction-sintered cordierite ceramics containing $TiO_2$ as an additive were insensitive to the additive composition, additive content, and sintering temperature and ranged from $1.92g/cm^3;to;2.06g/cm^3$. In contrast, the cordierite ceramics containing $Y_2O_3$ showed a maximal density of $2.21g/cm^3$ at 5 wt% addition and at a sintering temperature of $1400^{circ}C$. The compressive strength of cordierite ceramics showed the same tendency with the density. Typical compressive strength of cordierite ceramics containing 5 wt% $Y_2O_3$ as a sintering additive and sintered at $1400^{circ}C;was;{sim}480MPa$.
Key words: Cordierite, Reaction sintering, Densification, Compressive strength
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