Journal of the Korean Ceramic Society (한국세라믹학회지)

The Korean Ceramic Society (한국세라믹학회)
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Mechanical Properties of B4C Ceramics Fabricated by a Hot-press Sintering

일축 가압 소결법을 이용한 고밀도 탄화 붕소 제조 및 기계적 특성

  • 채재홍 (요업(세라믹)기술원 기술응용확산센터) ;
  • 박주석 (요업(세라믹)기술원 기술응용확산센터) ;
  • 안종필 (요업(세라믹)기술원 기술응용확산센터) ;
  • 김경훈 (요업(세라믹)기술원 기술응용확산센터)
  • Published : 2009.01.31
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Abstract

$B_4C$ ceramics were fabricated by a hot-press sintering method and their sintering behavior, microstructure and mechanical properties were evaluated. Relative density of $B_4C$ ceramics were obtained by a hot-press sintering method reached as high as 99% without any sintering additives. The mechanical properties of $B_4C$ ceramics was improved by a methanol washing process which can remove $B_2O_3$ phase from a $B_4C$ powder surface. This improvement results from the formation of homogeneous microstructure because the grain coarsening was suppressed by the elimination of $B_2O_3$ phase. Particularly, mechanical properties of the sintered specimen using a methanol washed powder improved compared with the specimen using an as-received commercial powder.

Keywords

References

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