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J. Korean Ceram. Soc. > Volume 44(6); 2007 > Article
Journal of the Korean Ceramic Society 2007;44(6): 338.
doi: https://doi.org/10.4191/kcers.2007.44.6.338
규소/질화규소 비가 자전연소합성공정을 이용한 다공질 질화규소 세라믹스의 미세구조와 특성에 미치는 영향
김동백, 박동수1, 한병동1, 정연길
창원대학교 재료공학과
1한국기계연구원 미래기술연구부
Effect of Si/Si3N4 Ratio on the Microstructure and Properties of Porous Silicon Nitrilde Prepared by SHS Methode
Dong-Baek Kim, Dong-Soo Park1, Byung-Dong Hahn1, Yeon-Gil Jung
Department of Materials Science and Engineering, Changwon National University
1Department of Future Technology, Korea Institute of Machinery and Materials
Porous silicon nitride ceramics were prepared by SHS (Self-Propagating High Temperature Synthesis) from silicon powder, silicon nitride powder and pore-forming precursor. The microstructure, porosity and the flexural strength of the porous silicon nitride ceramics were varied according to the Si/Si3N4 ratio, size and amount of the pore-forming precursors. Some sample exhibited as high flexural strength as $162{pm}24;MPa$. The high strength is considered to result from the fine pore size and the strong bonding amoung the silicon nitride particles.
Key words: SHS, Porous ceramics, $Si_3N_4$, Si
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