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Journal of the Korean Ceramic Society 1988;25(6): 609. |
| 반응소결에 의한 SiC의 소결과 그 특성에 관한 연구 (초기 소결과정에서의 B4C 및 Y2O3의 첨가 영향) |
| 백용혁 |
| 전남대학교 무기재료공학과 |
| Sintering of Silicon Carbide by Reaction Bonding and its Characteristics (Effect of Addition of B4C and Y2O3 in Initial Sintering Precess) |
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| ABSTRACT |
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This study was carried out to investigate the effects of B4C or Y2O3 additives on the tendency of sintering, $beta$-SiC synthesis and mineral phase changes by reaction bonding of SiC at 145$0^{circ}C$. At the sintering temperature of 145$0^{circ}C$, the additives such as B4C or Y2O3 did not improved porosity and bending strength. Added more than 1.5% of Y2O3, 0.5-0.3% of B4C, the formation of $beta$-SiC was increased. At higher temperature above 145$0^{circ}C$, it seems that the bodies added B4C, contained 3C form of SiC were denser than that of Y2O3 added. Because the transition of 3Clongrightarrow4Hlongrightarrow6H promoted sintering. |
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