Journal of the Korean Ceramic Society (한국세라믹학회지)

The Korean Ceramic Society (한국세라믹학회)
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Variation of Yield and Oxygen Content of SiC-Based Ceramics with the Conversion Processes of PCS

PCS의 전환공정에 따른 SiC세라믹스 수율 및 산소 함량 변화

  • Kim, Joung-Il (Nuclear Materials Technology and Development, Korea Atomic Energy Research Institute) ;
  • Kim, Weon-Ju (Nuclear Materials Technology and Development, Korea Atomic Energy Research Institute) ;
  • Park, Ji-Yeon (Nuclear Materials Technology and Development, Korea Atomic Energy Research Institute)
  • 김정일 (한국원자력연구소 원자력재료기술개발부) ;
  • 김원주 (한국원자력연구소 원자력재료기술개발부) ;
  • 박지연 (한국원자력연구소 원자력재료기술개발부)
  • Published : 2005.03.01
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Abstract

The conversions to SiC-based ceramics of a polycarbosilane (PCS) with and without oxidation curing were carried out. A yield and an oxygen content of conversed SiC-based ceramics were evaluated. The weight losses of conversed SiC-based ceramics by both processes analyzed to estimate the high temperature stability after heat treatment at high temperature in vacuum. The yield of SiC­based ceramics after oxidation curing was higher than that without curing process. However, the weight loss of SiC-based ceramics with oxidation curing was larger than that without curing process after heat treatment.

무기 고분자인 polycarbosilane(PCS)으로부터 탄화규소 (SiC) 세라믹스로의 전환을 열산화에 의한 불융화 처리를 한 후 열분해 하는 공정과 불응화 처리를 하지 않고 열분해 하는 두 공정으로 각각 행하고, 수율 및 산소 함량을 비교하였다. 또한 두 공정으로 얻어진 SiC 세라믹스의 고온 안정성 평가를 위해 진공분위기의 고온에서 열처리 하여 무게 감량을 비교하였다. 열산화에 의한 불융화 처리를 한 후 열분해 하여 얻어진 SiC 세라믹스의 수율이 불융화 처리를 하지 않고 열분해 하여 얻어진 SiC세라믹스의 수율보다 높게 나타났으나, 이를 고온의 진공분위기에서 열처리 하였을 때는 열산화에 의해 불융화 처리를 한 공정으로부터 얻어진 SiC 세라믹스의 무게 감량이 크게 나타났다.

Keywords

References

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