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J. Korean Ceram. Soc. > Volume 31(5); 1994 > Article
Journal of the Korean Ceramic Society 1994;31(5): 561.
반응결합 소결법을 이용한 SiC 복합체 제조
한인섭, 양준환, 정윤중1
한국에너지기술연구소 에너지재료연구팀
1명지대학교 공과대학 무기재료공학과
Preparation of SiC Composite by the Method of Reaction-Bonded Sintering
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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