Journal of the Korean Ceramic Society (한국세라믹학회지)

The Korean Ceramic Society (한국세라믹학회)
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Effect of Si/Si3N4 Ratio on the Microstructure and Properties of Porous Silicon Nitrilde Prepared by SHS Methode

규소/질화규소 비가 자전연소합성공정을 이용한 다공질 질화규소 세라믹스의 미세구조와 특성에 미치는 영향

  • Kim, Dong-Baek (Department of Materials Science and Engineering, Changwon National University) ;
  • Park, Dong-Soo (Department of Future Technology, Korea Institute of Machinery and Materials) ;
  • Hahn, Byung-Dong (Department of Future Technology, Korea Institute of Machinery and Materials) ;
  • Jung, Yeon-Gil (Department of Materials Science and Engineering, Changwon National University)
  • 김동백 (창원대학교 재료공학과) ;
  • 박동수 (한국기계연구원 미래기술연구부) ;
  • 한병동 (한국기계연구원 미래기술연구부) ;
  • 정연길 (창원대학교 재료공학과)
  • Published : 2007.06.30
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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.

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References

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