Journal of the Korean Ceramic Society (한국세라믹학회지)

The Korean Ceramic Society (한국세라믹학회)
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Preparation of β-SiAlON Powder by Combustion Reaction in the System of Si-Al-SiO2-NH4F(β-Si3N4)

Si-Al-SiO2-NH4F(β-Si3N4)계에서 연소반응에 의한 β-SiAlON분말의 제조

  • Min, Hyun-Hong (Engineering Research Center for Rapidly Solidified Materials, Chungnam National University) ;
  • Shin, Chang-Yun (Engineering Research Center for Rapidly Solidified Materials, Chungnam National University) ;
  • Won, Chang-Whan (Engineering Research Center for Rapidly Solidified Materials, Chungnam National University)
  • 민현홍 (충남대학교 급속응고신소재연구소) ;
  • 신창윤 (충남대학교 급속응고신소재연구소) ;
  • 원창환 (충남대학교 급속응고신소재연구소)
  • Published : 2006.10.31
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Abstract

The preparation of $\beta$-SiAlON powder by SHS in the system of $Si-Al-SiO_2-NH_4F(\beta-Si_3N_4)$ was investigated in this study. In the preparation of SiAlON powder, the effect of gas pressure, compositions such as Si, $NH_4F$, \beta-Si_3N_4$ and additive in mixture on the reactivity were investigated. At 50 atm of the initial inert gas pressure in reactor, the optimum composition for the preparation of pure $\beta$-SiAlON was $3Si+Al+2SiO_2+NH_4F$. The $\beta$-SiAlON powder synthesized in this condition was a single phase $\beta$-SiAlON with a rod like morphology.

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References

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