Abstract In current work, the wear resistance of CuNiAl was improved by the application of an aromatic thermosetting co-polyester (ATSP)-based coating on its surface. Tribological behaviors of the ATSP coating at stresses of 1.52, 3.04 and 3.75 MPa under different lubrication conditions (dry friction and oil) were studied by the fretting wear test. The morphology and chemical composition of the coating were characterized by scanning electron microscopy, Fourier transform infrared spectroscopy and three-dimensional (3D) optical microscope. Results showed that at the same conditions, the friction torque of the ATSP coating was lower than that of CuNiAl. Significantly, wear was reduced by more than 90% after the application of the ATSP coating. The wear mechanism of the ATSP coating was slight deformation with pits induced by plastic deformation and fatigue crack propagation. The ATSP coating underwent molecular chain breakage during wear and chemical reaction with the friction pair to form a transfer film which played an important role in the reduction of wear.

中文翻译：

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芳香族热固性共聚酯（ATSP）涂层与镍铝青铜在扭转微动磨损下的对比研究

摘要 在目前的工作中，CuNiAl 的耐磨性通过在其表面涂覆芳香族热固性共聚酯 (ATSP) 基涂层来提高。通过微动磨损试验研究了 ATSP 涂层在不同润滑条件（干摩擦和油）下在 1.52、3.04 和 3.75 MPa 应力下的摩擦学行为。通过扫描电子显微镜、傅里叶变换红外光谱和三维（3D）光学显微镜对涂层的形貌和化学成分进行了表征。结果表明，在相同条件下，ATSP涂层的摩擦扭矩低于CuNiAl涂层。值得注意的是，在应用 ATSP 涂层后，磨损减少了 90% 以上。ATSP涂层的磨损机制是由塑性变形和疲劳裂纹扩展引起的带有凹坑的轻微变形。ATSP涂层在磨损过程中分子链断裂，与摩擦副发生化学反应，形成转移膜，对减少磨损起到重要作用。