반응소결 탄화규소의 다양한 α-SiC 조성에 따른 기계적 특성과 전기저항 특성에 관한 연구
A Study on the Mechanical Properties and Specific Resistivity of Reaction-Bonded Silicon Carbide According to α-SiC of Various Mixed Particle Size
0
조회
0
다운로드
2
인용
0
참고문헌
키워드
초록
저저항 Si-SiC 소결체 제조를 위해 α-SiC에서 조성과 C의 양을 변화시키면서 반응소결 특성을 고찰하였다. 시료준비는 정수압으로 성형체를 제조하였고, 용융Si 반응소결을 통해 시험편을 준비하였다. 반응소결체의 미세구조, 기계적 특성 및 전기저항 분석 결과 용융Si과 반응 후 미립의 β-SiC가 생성되었고, 치밀한 소결체를 형성하였다. 미립 β-SiC 생성량은 카본 양에 따라 증가하였다. 그리고 C함량 10wt% 이내에서 기계․R전기저항특성은 입도조성 영향이 크고 카본 함량 10wt%이상에서는 상전이 반응의 영향이 큼을 알 수 있었다.
Abstract
For the manufacture of low resistance Si-SiC composite, the properties of reaction sintering in the green body of various mixed α-SiC powder size with the various carbon contents from 0wt% to 20wt% were investigated. The samples preparation was green body by CIP method under this condition, molten silicon infiltration process was conducted to reaction bonded silicon carbide. the results of sintered density, 3-point bending strength and resistance of analysis showed that varied carbon and silicon melt reacted to convert to fine β-SiC particle and the structure was changed to dense material. The amount of fine β-SiC particle was gradually increased as carbon content increase. According to mixed composite, it's mechanical and specific resistivity properties was strongly influenced by carbon content within 10wt% more then carbon content 10wt% was strongly influenced by phase transition.
참고문헌 (9)
- Sawyer, G.R., "Microstructural Characterization of"REFEL"(reaction-bonded)Silicon Carbide", Journal of Materials Science, 13(4), pp.885~904 (1978)
- Popper, P., "The Preparation of Dense Self-Bonded Silicon Carbide", pp.209~219 (1960), Special Ceramics
- Pampuch, R., "Reaciontion Mechanism in Carbon-Liquid Silicon Systems at Elevated Temperature", Ceramics International, 12(2), pp.99~106 (1986)
- Forrest, C.W., "The Fabrication and Properties of Self-Bonded Silicon Carbide Bodies", pp.99~ (1972), Special Ceramics
- Mehan, R.L., "Effect of SiC Content and Orientation on the Properties of Si", SiC Ceramic Composite, 1978, pp.13(2), 358~366
- Lim, C.B., "Transport of Fine-Grained β-SiC in SiC", Liquid Si Sytem, 1988, pp.3(3), 291~293
- Lim, C.B., "Strength of Reaction Sintered SiC Heterogeneously Containing Fine-Grained β-SiC", Journal of Materials Science, 23(9), pp.3248~3253 (1988)
- Jeong, S.J., "반응소결법에 의한 탄화규소 소결체의 제조공정 변수에 관한 고찰", Journal ofThe Korean Ceramic Society, 9(6), pp.630~636 (1994)
- Park, J.H., "A Study on the Si-SiC Composites Fabricated by Pressureless Powder Packing Forming Method", Journal of The Korean Ceramic Society, 32(6), pp.710~718 (1995)