This study investigates tribological performance of MoS₂ coating on slipper pair in axial piston pump. Firstly, the MoS₂ coating on the surface of slipper pair was prepared by atmospheric plasma spraying treatment technology. Secondly, the tribological characteristics of slipper pair under various working conditions were evaluated on ring-on-block tester in oil lubrication. The original and worn surfaces of the specimens were analyzed with scanning electron microscope and energy dispersive spectrometer, and then the wear morphologies of the MoS₂ coatings were imaged by X-ray photoelectron spectroscopy. The experimental results showed that the friction coefficients of Cu-based materials with MoS₂ coating decreased by about 0.05 at 800 N. Especially, when the external load was set to 800 N, the wear rate of the ZY331608 decreased by about 16.4% after the substrates were treated by the MoS₂ coating, which exhibited excellent anti-friction and wear resistance. The formation of the MoS₂ lubricating film could be classified into four stages, including the initial friction stage, anchoring stage of MoS₂ on friction surface, covering stage of the sliding surface by MoS₂ and the formation stage of MoS₂ film. The dominating wear mechanisms of Cu-based materials with MoS₂ coating were adhesive wear and abrasive wear accompanied with oxidative wear.

本研究研究了轴向柱塞泵中的拖鞋对上的MoS ₂涂层的摩擦学性能。首先，通过大气等离子喷涂技术制备了拖鞋对表面的MoS ₂涂层。其次，在油润滑的情况下，在对接环试验机上评估了拖鞋在不同工作条件下的摩擦学特性。用扫描电子显微镜和能量分散光谱仪分析样品的原始和磨损表面，然后用X射线光电子能谱对MoS ₂涂层的磨损形态进行成像。实验结果表明，Cu基材料与MoS ₂的摩擦系数涂层在800 N下降低约0.05。特别是，当外部负载设置为800 N时，在用MoS ₂涂层处理基材后，ZY331608的磨损率降低了约16.4％，表现出优异的减摩和抗磨性能。耐磨性。MoS ₂润滑膜的形成可分为四个阶段，包括初始摩擦阶段，MoS ₂在摩擦表面上的锚固阶段，滑动表面被MoS ₂覆盖的阶段以及MoS ₂膜的形成阶段。带有MoS ₂涂层的铜基材料的主要磨损机理是粘合剂磨损，磨料磨损以及氧化磨损。