ABSTRACT Polymer nanocomposite coatings with low friction and high wear resistance are being developed to protect aluminium surfaces against wear and tear during dry and boundary lubrication. In the present study, pure and graphene nanoplatelets (GNPs) reinforced ultra-high molecular weight polyethylene (UHMWPE) nanocomposite coatings are deposited on aluminium thrust bearings. Each bearing makes an ROD contact with a metallic disc counterface to simulate the contact configuration in an actual bearing. A set of tests involving pure and reinforced UHMWPE coatings under dry and liquid contact lubrication is conducted. The wear test results reveal that UHMWPE/1 wt-% GNPs performs better than the reference sample significantly. It reduces the friction and wear of aluminium both in the dry and boundary lubrication conditions at different conditions. The 1 wt-% GNPs reinforcement increases the load-bearing capacity of UHMWPE by 440% in the presence of base oil.

中文翻译：

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涂有 UHMWPE/GNPs 纳米复合涂层的轴承的摩擦学表征

摘要 具有低摩擦和高耐磨性的聚合物纳米复合涂层正在开发中，以保护铝表面在干润滑和边界润滑期间免受磨损。在本研究中，纯石墨烯纳米片 (GNP) 增强的超高分子量聚乙烯 (UHMWPE) 纳米复合涂层沉积在铝制推力轴承上。每个轴承都与金属圆盘配合面进行 ROD 接触，以模拟实际轴承中的接触配置。进行了一系列测试，涉及在干式和液体接触润滑下的纯和增强型 UHMWPE 涂层。磨损测试结果表明，UHMWPE/1 wt-% GNP 的性能明显优于参考样品。它减少了铝在不同条件下的干润滑和边界润滑条件下的摩擦和磨损。