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Tribological behavior and microstructural evolution of lubricating film of silver matrix self-lubricating nanocomposite
Friction ( IF 6.3 ) Pub Date : 2020-11-09 , DOI: 10.1007/s40544-020-0379-y
Xiao Kang , Shuang Yu , Hailin Yang , Yang Sun , Lei Zhang

The aim of this study is to fabricate the nanocomposite with low friction and high wear resistance using binary solid lubricant particles. The microstructure and tribological performance of the nanocomposite are evaluated, and the composition and film thickness of the lubricating film are observed and analyzed by scanning electron microscopy (SEM) and X-ray photoelectron spectroscopy (XPS). The nanocomposite exhibited improved tribological properties with a friction coefficient as low as 0.12 and a low wear rate of 2.17 × 10−6 mm3/(N·m) in high-purity nitrogen atmosphere. Decreasing sliding speed can increase lubricating film thickness, and the thickest lubricating film is approximately 125 nm. As the film thickness of the lubricating film exceeded 90 nm, the friction coefficient curves became smooth. In compared with WS2, MoS2 can be more effective in forming the transfer layer on the worn surfaces at the initial stage of the tribological process.



中文翻译:

银基自润滑纳米复合材料润滑膜的摩擦学行为和组织演变

这项研究的目的是使用二元固体润滑剂颗粒制造具有低摩擦和高耐磨性的纳米复合材料。评价纳米复合材料的微观结构和摩擦学性能,并通过扫描电子显微镜(SEM)和X射线光电子能谱(XPS)观察和分析润滑膜的组成和膜厚。该纳米复合材料表现出改善的摩擦学性能,摩擦系数低至0.12,磨损率低至2.17×10 -6 mm 3。/(N·m)在高纯度氮气气氛中。降低滑动速度会增加润滑膜的厚度,最厚的润滑膜约为125 nm。当润滑膜的膜厚度超过90nm时,摩擦系数曲线变得平滑。与WS 2相比,MoS 2在摩擦过程的初始阶段可以更有效地在磨损表面上形成转移层。

更新日期:2020-11-09
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