Journal of the Korean Ceramic Society (한국세라믹학회지)

The Korean Ceramic Society (한국세라믹학회)
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Synthesis of Silicon Nitride from Kimcheon Quartzite

김천규석으로부터 질화규소의 합성

  • 이홍림 (연세대학교 공과대학 요업공학과) ;
  • 서원선 (연세대학교 공과대학 요업공학과) ;
  • 조덕호 (국립공업시험원) ;
  • 이종민 (국립공업시험원)
  • Published : 1987.02.01
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Abstract

Silicon nitride powders were prepared by the simultaneous reduction and nitridation from powder mixtures of Kim cheon quartzite and carbon (graphite or carbon black) at1400$^{\circ}C$ for 10 hours in nitrogen atmosphere. The effects of the reaction variables on the yield of products and on the ${\alpha}$/${\beta}$ ratio were examined. The average particle size, density, and the ${\alpha}$/${\beta}$ ratio of the obtained si3N4 were 1.0$\mu\textrm{m}$, 3.10g/㎤ and 90/10, respectively. It was found that the Si3N4 powders obtained in this work were comparable to the foreign commercial products.

Keywords

References

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