Preparation of SiC Composite by the Method of Reaction-Bonded Sintering

반응결합 소결법을 이용한 SiC 복합체 제조

  • 한인섭 (한국에너지기술연구소 에너지재료연구팀) ;
  • 양준환 (한국에너지기술연구소 에너지재료연구팀) ;
  • 정윤중 (명지대학교 공과대학 무기재료공학과)
  • Published : 1994.05.01


For the preparation of SiC composite, the properties of reaction sintering in the SiC-C-Si-Ti system with the titanium contents variation were investigated. Either the case of titanium additions or the case of direct infiltration of titanium in SiC+C preform, the newly formed fine-grained $\beta$-SiC, which was reacted from the molten silicon with graphite, was intergranulated between the original $\alpha$-SiC particles. Also titanium disilicide (TiSi2) was discontinuously formed isolated pocket in silicon matrix. The amount of titanium disilicide was gradually increased as titanium content increase. With the results of hardness and fracture toughness measurement, SiC-titanium disilicide (TiSi2) composite represented high properties compared with the system of the infiltrated pure silicon.



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