Journal of the Korean institute of surface engineering (한국표면공학회지)

The Korean Institute of Surface Engineering (한국표면공학회)
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Study on the Compositional Characteristics of the PCS Coating Layer by Curing Treatment for the Protection of Graphite Mold Surface

흑연 금형 표면 보호용 PCS 코팅층의 열경화에 의한 조성비 조절 특성 연구

  • Kim, Kyoung-Ho (Energy and Environmental Division, Korea Institute of Ceramic Engineering and Technology) ;
  • Lee, Yoonjoo (Energy and Environmental Division, Korea Institute of Ceramic Engineering and Technology) ;
  • Shin, Yun-Ji (Energy and Environmental Division, Korea Institute of Ceramic Engineering and Technology) ;
  • Jeong, Seong-Min (Energy and Environmental Division, Korea Institute of Ceramic Engineering and Technology) ;
  • Lee, Myung-Hyun (Energy and Environmental Division, Korea Institute of Ceramic Engineering and Technology) ;
  • Bae, Si-Young (Energy and Environmental Division, Korea Institute of Ceramic Engineering and Technology)
  • 김경호 (한국세라믹기술원 에너지환경본부) ;
  • 이윤주 (한국세라믹기술원 에너지환경본부) ;
  • 신윤지 (한국세라믹기술원 에너지환경본부) ;
  • 정성민 (한국세라믹기술원 에너지환경본부) ;
  • 이명현 (한국세라믹기술원 에너지환경본부) ;
  • 배시영 (한국세라믹기술원 에너지환경본부)
  • Received : 2020.10.12
  • Accepted : 2020.12.23
  • Published : 2020.12.31
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Abstract

The characteristics of the polycarbosilane (PCS)-based composite ceramic layer was studied by controlling the curing temperature. The stress at the interface of the graphite and SiOC composite layer was evaluated v ia finite element analysis. As a result, the tensile stress was released as the carbon ratio of the SiC decreases. In experiment, the SiOC layers were coated on the VDR graphite block by dip-coating process. It was revealed that the composition of Si and C was effectively adjusted depending on the curing temperature. As the solution-based process is employed, the surface roughness was reduced for the appropriate PCS curing temperature. Hence, it is expected that the cured SiOC layer can be utilized to reduce cracking and peeling of SiC ceramic composites on graphite mold by improving the interfacial stress and surface roughness.

Keywords

References

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