采用环块式摩擦磨损方式, 以烧结致密碳化硅陶瓷为对磨环, 研究自制反应烧结碳化硅陶瓷材料在干态和滴油润滑状态下的摩擦磨损性能。研究结果表明: 反应烧结碳化硅陶瓷在干态下的摩擦磨损过程分为跑合磨损阶段、稳定磨损阶段和剧烈磨损阶段三个阶段。磨损机制主要是磨粒磨损和氧化磨损, 摩擦系数大, 磨损量大; 在滴油润滑条件下, 其摩擦磨损过程分为跑合磨损阶段、稳定磨损阶段两个阶段, 摩擦系数小, 磨损量低。增加载荷, 反应烧结碳化硅陶瓷的磨损量及摩擦系数都增加, 但干态下增加得更为明显。

Friction and wear properties of the self-made reaction-sintered silicon carbide ceramic (RSSC) under the conditions of the dry and the oil lubrication frictions were studied, using the dense sintered silicon carbide ceramic (SSC) as the counter wear ring through the ring-block friction and wear style. The results showed that under the dry friction condition, the friction and wear of RSSC included three stages of running-in, stable wear and severe wear. The wear mechanism of RSSC was a mixture mode of abrasive wear and oxidative wear with bigger friction factor and wear volume. Under the oil lubrication condition, the friction and wear of RSSC only included two stages of running-in and stable wear with smaller friction factor and wear volume. As the loading increased, the wear volume and the friction factor of RSSC both increased, however, they increased as a higher rate for the RSSC friction block under the dry condition.