| 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 |
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| ABSTRACT |
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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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