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논문 상세정보

Ethyl Silicate로부터 Silicon Nitride의 합성(I

Synthesis of Silicon Nitride from Ethyl Silicate(I)


Mixtures of carbon and silica (about 0.46${\mu}{\textrm}{m}$) which was synthesized by the hydrolysis of ethyl silicate, the molar ratio of silica/carbon was fixed as 1/10(weight ratio : 1/2), were nitrided in the temperature range 135$0^{\circ}C$~150$0^{\circ}C$. The phse of the product Si3N4 was $\alpha$ phase and the morphology was hexagnoal prism and the nitridation reaction was completed in 5 hrs at 150$0^{\circ}C$ or 7hrs at 145$0^{\circ}C$. The reaction rate above 150$0^{\circ}C$ was diffusion-controlled, following Jander equation. Activation energy Q was derived from the Arrhenius plot and the value was about 101kcal/mol. Axis ratio of Lattice constants(c/a) was 0.726 and unit volume was $\AA$3, the larger the molar ratio of carbon/Alkoxide was, the smaller the particle size of $\alpha$Si3N4 was.

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참고문헌 (30)

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  17. Synthesis of Silicon Nitride Powder from Silica Reduction , Hiroshi Inoue;KaisuTosHi Komeya;AKihiKo Tsuge , Communications of the American Ceramic Society / v.,pp.C-203, 1982
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  26. Stability Realtionship in the System of β-Si₃N₄-αSi₃N₄-Si₂N₂O and Their Structural Change by Heating above 1600℃ , Yoshizo Inomata , Yogyo-Kyokai-shi / v.82,pp.522-526, 1974
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  30. Ethyl silicate의 加水分解에 의한 單分散 silica 微粒子의 合成(Ⅰ) , 吳一煥;朴金喆 , 요업학회지 / v.24,pp.500-506, 1987

이 논문을 인용한 문헌 (1)

  1. 1988. "Synthesis of Silicon Nitride from Ethyl Silicate(II) : Effect of Additive on the Nitridation of Silicon Nitride" 요업학회지 = Journal of the Korean Ceramic Society, 25(5): 561~569 


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