Journal of the Korean Ceramic Society (한국세라믹학회지)

The Korean Ceramic Society (한국세라믹학회)
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Effect of Si:C Ratio on Porosity and Flexural Strength of Porous Self-Bonded Silicon Carbide Ceramics

Si:C Ratio가 다공질 Self-Bonded SiC 세라믹스의 기공율과 곡강도에 미치는 영향

  • Lim, Kwang-Young (Department of Materials Science and Engineering, the University of Seoul) ;
  • Kim, Young-Wook (Department of Materials Science and Engineering, the University of Seoul) ;
  • Woo, Sang-Kuk (Energy Materials Research Center, Korea Institute of Energy Research) ;
  • Han, In-Sub (Energy Materials Research Center, Korea Institute of Energy Research)
  • 임광영 (서울시립대학교 신소재공학과) ;
  • 김영욱 (서울시립대학교 신소재공학과) ;
  • 우상국 (한국에너지기술연구원 에너지재료연구센터) ;
  • 한인섭 (한국에너지기술연구원 에너지재료연구센터)
  • Published : 2008.05.31
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Abstract

Porous self-bonded silicon carbide (SiC) ceramics were fabricated at temperatures ranging from 1750 to $1850^{\circ}C$ using SiC, silicon (Si), and carbon (C) powders as starting materials. The effect of the Si:C ratio on porosity and strength was investigated as a function of sintering temperature. It was possible to produce self-bonded SiC ceramics with porosities ranging from 36% to 43%. The porous ceramics showed a maximal porosity when the Si:C ratio was 2:1 regardless of the sintering temperature. In contrast, the maximum strength was obtained when the ratio was 5:1.

Keywords

References

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