Influence of Sintering Condition on Characteristics of $\alpha$-SiC Ceramics

$\alpha$-SiC 소결체의 특성에 미치는 소성조건의 영향

  • 정두화 (산업과학기술연구소 내화물연구실) ;
  • 김인술 (산업과학기술연구소 내화물연구실) ;
  • 김효준 (산업과학기술연구소 내화물연구실)
  • Published : 1991.10.01

Abstract

$\alpha$-SiC(B; 0.4 wt, C; 3 wt%) was sintered in Ar atmosphere from 205$0^{\circ}C$ to 220$0^{\circ}C$ by means of pressureless sintering and gas pressure sintering in order to find optimum sintering condition of $\alpha$-SiC. Mechanical properties and microstructures of sintered bodies were investigated according to sintering method. The effect of sintering condition on sinterability of $\alpha$-SiC was also examined by using the dilatometer. 97.5% and 98.8% of theoretical density were obtained from pressureless sintering and gas pressure sintering of $\alpha$-SiC powder, respectively. And modulus of rupture was measured as 270~350 MPa and 420 MPa respectively.

Keywords

References

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