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将以前与M-50钢对摩进行过评价的三维石墨纤维编织物增强的聚酰亚胺基自润滑保持架复合材料,在316℃下与热压氮化硅对摩进行了摩擦磨损试验,以确定其与陶瓷材料对摩时在摩擦学性能方面的变化。这些材料将应用在固体润滑的采用高比强度陶瓷滚动元件的高速透平轴承中。试验结果表明,这些复合材料与热压氮化硅对摩时的摩擦和磨损都急剧增大。这是由于从氮化硅环上发生了细小磨屑的物理和(或)化学转移,以及这些磨屑转移到复合材料表面上的缘故。调整复合材料中纤维和聚合物基体的比例,以及用所研究过的两种固体润滑剂混合物之一都可以降低摩擦与磨损。
A friction-wear test was carried out on a polyimide-based self-lubricating cage composite material previously reinforced with a three-dimensional graphite fiber braid having been evaluated with M-50 steel friction against a hot-pressed silicon nitride pair at 316 ° C, To determine its friction with the ceramic material in the tribological properties of the changes. These materials will be used in solid lubricated high speed turbine bearings with high specific strength ceramic rolling elements. The experimental results show that the friction and wear of these composites with hot-pressed silicon nitride increase sharply. This is due to the physical and / or chemical transfer of fine wear debris from the silicon nitride ring and the transfer of these wear debris to the composite surface. Adjusting the ratio of fiber to polymer matrix in the composite, as well as using one of the two solid lubricant mixtures studied, can reduce friction and wear.