Proceedings of the KIEE Conference (대한전기학회:학술대회논문집)

The Korean Institute of Electrical Engineers (대한전기학회)
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Effect of Annealing on Properties of SiC-$TiB_2$ Composites

SiC-$TB_2$ 복합체의 특성에 미치는 annealing의 영향

  • Shin, Yong-Deok (Electrical Electronic and Information Engineering, Wonkwnag Univ.) ;
  • Ju, Jin-Young (Electrical Electronic and Information Engineering, Wonkwnag Univ.) ;
  • Ko, Tae-Hun (Electrical Electronic and Information Engineering, Wonkwnag Univ.) ;
  • Kim, Young-Bek (Department of Electrical Control, Korea Polytechnic V)
  • 신용덕 (원광대학교 전기전자 및 정보 공학부) ;
  • 주진영 (원광대학교 전기전자 및 정보 공학부) ;
  • 고태헌 (원광대학교 전기전자 및 정보 공학부) ;
  • 김영백 (한국폴리텍V대학 순천캠퍼스 전기제어학과)
  • Published : 2007.07.18
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Abstract

The composites were fabricated 61Vo.% ${\beta}$-SiC and 39Vol.% $TiB_2$ powders with the liquid forming additives of 12wt% $Al_{2}O_{3}+Y_{2}O_{3}$ as a sintering aid by pressure or pressureless annealing at $1650^{\circ}C$ for 4 hours. The present study investigated the influence of annealed sintering on the microstructure and mechanical of SiC-$TiB_2$ electroconductmive ceramic composites. Reactions between SiC and transition metal $TiB_2$ were not observed in the microstructure and the phase analysis of the SiC-$TiB_2$ electroconductive ceramic composites. Phase analysis of SiC-$TiB_2$ composites by XRD revealed mostly of ${\alpha}$-SiC(6H), $TiB_2$, and In Situ YAG($Al_{5}Y_{3}O_{12}$). The relative density, the flexural strength, the Young's modulus showed the highest value of 86.69[%], 136.43[MPa], 52.82[GPa] for pressure annealed SiC-$TiB_2$ ceramic composites.

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