The synergistic effect of the hard/soft phases of a material is potentially valuable and significant for improving wear resistance. Given this, a method for preparing FeO/Ag nanostructured coatings, in which reciprocating sliding friction is used to prepare nano-FeO coatings and magnetron sputtering is used to prepare nano-Ag coatings, is proposed. The fretting wear test using a SiC ball as the friction pair shows that a large amount of oxide accumulates on the friction pair surface of the substrate, while that of the coating is smooth, and the coating greatly improves the wear resistance of the sample. In particular, the FeO/Ag coating has better fretting wear resistance, and the wear rate is as low as 7.03 × 10 μmNμm. The excellent tribological properties of FeO/Ag nanostructured coatings at room temperature are derived from the Ag–FeO nanocomposite layer with a Ag composition gradient, which is formed by Ag nanoparticles gradually penetrating into the FeO layer under the normal load produced during fretting wear. Furthermore, the Ag/FeO semi-coherent interface, which is induced between Ag and FeO nanoparticles under fretting wear, endows the composite layer with excellent thermal and mechanical stability. This design idea of using a fretting wear load to prepare composite coatings with the synergistic effect of hard and soft phases to strengthen the wear performance of a workpiece also provides a reference for the preparation of other hard/soft heterogeneous coatings.

中文翻译：

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滑动摩擦与磁控溅射制备Fe2O3/Ag纳米结构涂层耐微动磨损的协同机制

材料的硬/软相的协同效应对于提高耐磨性具有潜在价值和重要意义。鉴于此，提出了一种利用往复滑动摩擦制备纳米FeO涂层和磁控溅射制备纳米Ag涂层的FeO/Ag纳米结构涂层的制备方法。采用SiC球作为摩擦副的微动磨损试验表明，基体摩擦副表面堆积有大量氧化物，而涂层则光滑，涂层大大提高了试样的耐磨性能。特别是FeO/Ag涂层具有更好的耐微动磨损性能，磨损率低至7.03×10μmNμm。 Fe3O/Ag纳米结构涂层在室温下优异的摩擦学性能源自具有Ag成分梯度的Ag-FeO纳米复合层，该层是由Ag纳米颗粒在微动磨损过程中产生的正常载荷下逐渐渗入FeO层形成的。此外，微动磨损下Ag和FeO纳米粒子之间产生的Ag/FeO半共格界面赋予复合层优异的热稳定性和机械稳定性。这种利用微动磨损载荷制备软硬相协同作用的复合涂层来强化工件耐磨性能的设计思路也为其他硬/软异质涂层的制备提供了参考。