한국해양공학회:학술대회논문집 (Proceedings of the Korea Committee for Ocean Resources and Engineering Conference)

한국해양공학회 (Korean Society of Ocean Engineers)
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NITE-SiC 복합재료의 미세구조 특성에 미치는 섬유배열방향 영향

Effects of Fiber Arrangement Direction on Microstructure Characteristics of NITE-SiC Composites

  • 이영주 (동의대학교 일반대학원 기계공학과) ;
  • 윤한기 (동의대학교 기계공학과) ;
  • 박준수 (교토대학 에너지이공학연구소) ;
  • Lee, Young-Ju (Department of Mechanical Engineering, Graduate School, Dongeui University) ;
  • Yoon, Han-Ki (Department of Mechanical Engineering, Dongeui University) ;
  • Park, Joon-Soo (Institute of Advanced Energy, Kyoto University) ;
  • Kohyama, A. (Institute of Advanced Energy, Kyoto University)
  • 발행 : 2006.11.16
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초록

SiC materials have been extensively studied for high temperature components in advanced energy conversion system and advanced gas turbine. However, the brittle characteristics of SiC such as law fracture toughness and law strain-to fracture impose a severe limitation on the practical applications of SiC materials. SiC/SiC composites can be considered as a promising candidate in various structural materials, because of their good fracture toughness. In this composite system, the direction of SiC fiber will give an effect to the mechanical properties. It is therefore important to control a properdirection of SiC fiber for the fabrication of high performance SiC/SiC composites. In this study, unidirection and two dimension woven structures of SiC/SiC composites were prepared starting from Tyranno SA fiber. SiC matrix was obtained by nano-powder infiltration and transient eutectoid (NITE) process. Effect of microstructure and density on the sintering temperature in NITE-SiC/SiC composites are described and discussed with the fiber direction of unidirection and two dimension woven structures.

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