Journal of the Korean Ceramic Society (한국세라믹학회지)

The Korean Ceramic Society (한국세라믹학회)
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Low Temperature Sintering Additives for Mullite Ceramics

뮬라이트 세라믹스의 저온 소결을 위한 첨가제

  • Lim, Chang-Bin (Department of Materials Science and Engineering, Yonsei University) ;
  • Yeo, Dong-Hun (Korea Institute of Ceramics Engineering and Technology) ;
  • Shin, Hyo-Soon (Korea Institute of Ceramics Engineering and Technology) ;
  • Cho, Yong-Soo (Department of Materials Science and Engineering, Yonsei University)
  • 임창빈 (연세대학교 신소재공학과) ;
  • 여동훈 (한국세라믹기술원 미래융합세라믹본부) ;
  • 신효순 (한국세라믹기술원 미래융합세라믹본부) ;
  • 조용수 (연세대학교 신소재공학과)
  • Received : 2011.09.29
  • Accepted : 2011.11.21
  • Published : 2011.11.30
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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/$^{\circ}C$.

Keywords

References

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