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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
ABSTRACT
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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