| 반응소결 탄화규소의 접동조건에 따른 마찰계수 및 미세구조 |
| 김호균, 김인섭, 이병하 |
| 명지대학교 공과대학 무기재료공학과 |
| Friction Coefficient and Microstructure of Reaction-Bonded Silicon Carbide According to Sliding Conditons |
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| ABSTRACT |
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Reaction-bonded SiC-Si material was fabricated by infiltration of Si melt into a mixture of $alpha$-SiC and carbon at 175$0^{circ}C$ under the vacuum atmosphere. Wear properties were analyzed by ball-on-plate wear tester, changing loading weight, sliding speed, sliding time and atmosphere, Results showed that the friction coefficient was decreased with increasing load and sliding velocity. The lowest friction coefficient of 0.05 was obtained under an oil atmosphere. The analysis of the wear surface indicated that the areas wehre particles were pulled out and where free silicon particles worn out preferentially serve as liquid reservoirs to decrease the wear resistance. |
| Key words:
Reaction-bonded SiC, Wear properties, Ball-on-plate |
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