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J. Korean Ceram. Soc. > Volume 48(6); 2011 > Article
Journal of the Korean Ceramic Society 2011;48(6): 604.
doi: https://doi.org/10.4191/kcers.2011.48.6.604
뮬라이트 세라믹스의 저온 소결을 위한 첨가제
임창빈, 여동훈1, 신효순1, 조용수
연세대학교 신소재공학과
1한국세라믹기술원 미래융합세라믹본부
Low Temperature Sintering Additives for Mullite Ceramics
Chang-Bin Lim, Dong-Hun Yeo1, Hyo-Soon Shin1, Yong-Soo Cho
Department of Materials Science and Engineering, Yonsei University
1Korea Institute of Ceramics Engineering and Technology
ABSTRACT
Additives for low temperature sintering of mullite ceramics were investigated for matching Mo-Cu conducting paste with that ceramics at 1,400$^{circ}C$. $SiO_2$, MgO and $Y_2O_3$ were chosen as the additives for low temperature sintering, and the amounts of those additives were varied with sintering temperature of 1,400$^{circ}C$ to 1,500$^{circ}C$. With additives of 1.0 wt% of $SiO_2$, 1.0 wt% of MgO, and 1.5 wt% of $Y_2O_3$, the densest sintered body of 3.12 g/$cm^3$ was obtained at 1,400$^{circ}C$ in reducing atmosphere. The flexural strength of that was 325 MPa and the CTE (Coefficient of thermal expansion) was 4.33 ppm/$^{circ}C$.
Key words: Mullite, Additives, Low temperature sintering, $SiO_2$, MgO, $Y_2O_3$
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