【摘要】 为了研究载荷对新型水润滑高分子轴承材料磨损机制的影响,在CFT-1型摩擦磨损试验机上对该材料进行不同载荷下的无/有水润滑摩擦磨损试验,通过考察试样的摩擦因数、磨痕和磨损表面形貌,分析该材料的磨损机制。结果表明:在无水润滑条件下,该材料的摩擦因数随着载荷的增加呈现先降低后逐渐上升的变化趋势,磨损表面均出现塑性变形和撕裂脱落现象,磨损机制主要为黏着磨损,其中随着载荷的增大表面塑性变形趋于严重,而表面撕裂脱落在中等载荷下较为轻微,在低载荷和高载荷下较为严重;在水润滑条件下,该材料的摩擦因数随着载荷的增加也呈现出先下降低后急剧上升的趋势,磨损表面未发生塑性变形和撕裂脱落,但出现脱落的磨粒和犁沟,磨损机制主要为磨粒磨损,其中在中等载荷下,表面脱落的磨粒少、犁沟细小而浅,在低载荷和高载荷下表面脱落的磨粒多、犁沟深。更多还原

【Abstract】 In order to investigate the effects of load on the wear mechanism of the new water-lubricated polymer bearing material,under non-lubrication and water-lubrication conditions,the friction and wear test of the friction pairs under different loads was conducted on CFT-1 friction and wear tester.The wear mechanism of the material were analyzed by the measured friction coefficient,wear scar,and wear surface morphology.The results show that under non-lubrication condition,the friction coefficient of the material is first decreased gradually and then increased,the plastic deformation and tearing off phenomenon appear on the worn surface,and the wear mechanism is mainly adhesive wear.With the increase of load,the plastic deformation of the surface tends to be serious,but the surface tearing off is relatively slight under moderate load and severe under low load and high load.Under the condition of water lubrication,the friction coefficient of the material is first decreased gradually and then increased sharply,there is no plastic deformation and tearing off on the worn surface,but the abrasive particles falls off and the furrow become visible,and the wear mechanism is mainly abrasive wear.Under moderate load,the surface has less abrasive particles and the furrow is small and shallow.Under low load and high load,the surface has more abrasive particles and the furrow is deep.更多还原