Journal of the Korean Ceramic Society (한국세라믹학회지)

The Korean Ceramic Society (한국세라믹학회)
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Low Temperature Processing and Properties of Porous Frit-Bonded SiC Ceramics

프릿을 이용한 다공질 SiC 세라믹스의 저온 제조 공정 및 물성

  • Chae, Su-Ho (Department of Materials Science and Engineering, the University of Seoul) ;
  • Kim, Young-Wook (Department of Materials Science and Engineering, the University of Seoul) ;
  • Song, In-Hyuck (Powder Materials Research Division, Korea Institute of Materials Science) ;
  • Kim, Hai-Doo (Powder Materials Research Division, Korea Institute of Materials Science) ;
  • Bae, Ji-Soo (Young-Jin Ceramics Co., Ltd.) ;
  • Na, Sang-Moon (Young-Jin Ceramics Co., Ltd.) ;
  • Kim, Seung-Il (Young-Jin Ceramics Co., Ltd.)
  • Published : 2009.09.30
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Abstract

Porous frit-bonded SiC ceramics were successfully prepared at a temperature as low as $800^{\circ}C$ from SiC, frit, and microbeads (glass or polymer). The effects of SiC starting particle size and microbead addition on microstructure, porosity, and flexural strength were investigated. The addition of hollow glass microbead improved the strength of frit-bonded SiC ceramics without the loss of porosity by acting additional binder phase between SiC grains. The 65 ${\mu}m$-sized SiC resulted in lower porosity and higher strength than 50 ${\mu}m$-sized SiC because of higher packing density. Typical flexural strengths of frit-bonded SiC were 23 MPa at 46% porosity and 19 MPa at 49% porosity.

Keywords

References

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