| SHS Microwave 법으로 합성한 SiC 분말의 고온가압 소결특성 |
| 김도경, 안주삼1, 김익진2, 이형복 |
명지대학교 무기재료공학과
1연세대학교 세라믹공학과
2한서대학교 재료공학과 |
| Sintering Characterization of Hot-Pressed SiC Prepared by SHS Microwave Method |
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| ABSTRACT |
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Ultra-fine $beta$-SiC powders were fabricated by self-propagating high temperature synthesis process (SHS) using microwave oven. The flexural strength, fracture toughness, and hardness of hot pressed sample at 200$0^{circ}C$ for 60 min using synthesized SiC powders, which had 2 wt% of Al2O3 and 2.5 wt% of B4C content, showed 438 MPa, 4.15MPa.m1/2 and 28 GPa, respectively. The highest strength, fracture toughness, and hardness of composites containing 4wt% of Al2O3, which had highest relative density of 99.9%, showed 458 MPa, 4.6MPa.m1/2 and 36.2 GPa, respectively. |
| Key words:
Ultra-fine ${\beta}$-SiC, SHS microwave oven, B4C, Composite, Hot press |
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