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针对纯水液压元件摩擦副实际工况,研究了水润滑状态下Al_2O_3和Al_2O_3+13％TiO_2等离子喷涂试环分别与整体烧结A_2O_3块之间的摩擦磨损特性,考察了摩擦系数及试环磨损量随时间的变化,利用扫描电子显微镜(SEM)观察了磨痕的表面形貌,利用X射线能量色散谱仪分析了磨痕表面的元素组成。研究结果表明:水润滑条件下两种摩擦副的磨损机理主要是脆性断裂、微切削与腐蚀磨损:摩擦副Al_2O_3环/整体烧结Al_2O_3块的摩擦学性能优于Al_2O_3+13%TiO_2环/Al_2O_3块,它们更适合作为纯水液压元件的摩擦副材料。
Aiming at the actual working conditions of the friction pair of pure water hydraulic components, the friction and wear characteristics between Al 2 O 3 and Al 2 O 3 + 13% TiO 2 plasma spraying test rings and the monolithic sintered A 2 O 3 blocks under water lubrication were studied. The friction coefficient and wear resistance The surface morphology of the wear scar was observed by scanning electron microscopy (SEM) and the elemental composition of the wear scar was analyzed by energy dispersive X-ray spectrometry. The results show that the wear mechanism of the two kinds of friction pair under water lubrication conditions are mainly brittle fracture, micro-cutting and corrosion wear: Tribological performance of Al 2 O 3 ring / monolith sintered Al 2 O 3 block is better than that of Al 2 O 3 + 13% TiO 2 ring / Al 2 O 3 block , They are more suitable as pure water hydraulic components of the friction material.