This paper is devoted to investigate the friction‐reducing and wear protection of SnS₂ nanosheets as lubricant additive in poly‐α‐olefin oil (PAO). SnS₂ nanosheets, synthesised by a hydrothermal process, were characterised by Raman and X‐ray photoelectron spectroscopy (XPS). A ball‐on‐disk tribometer was used to compare the friction coefficient and wear when lubricated by PAO oil in absence and presence of SnS₂ nanosheets. The worn surfaces were observed by SEM. The chemical compositions of tribofilm are analysed by XPS. The experiments showed that addition of SnS₂ nanosheets are effective in reducing both friction and wear when lubricated by using base oil. XPS results shows that the enhanced tribological performance is due to a SnS₂‐rich boundary film which is formed by deposit of SnS₂ nanosheets on the contact area during the sliding process.

中文翻译：

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SnS2纳米片作为聚α-烯烃油中的优良润滑剂添加剂

本文致力于研究SnS ₂纳米片作为聚α-烯烃油（PAO）中的润滑剂添加剂的减摩和耐磨保护。通过水热法合成的SnS ₂纳米片通过拉曼光谱和X射线光电子能谱（XPS）进行了表征。使用圆盘摩擦计比较在不存在和存在SnS ₂纳米片的情况下用PAO油润滑时的摩擦系数和磨损。通过SEM观察磨损的表面。摩擦膜的化学组成通过XPS分析。实验表明，添加SnS ₂纳米片可有效减少使用基础油润滑时的摩擦和磨损。XPS结果表明，增强的摩擦学性能归因于SnS富含_2的边界膜，是通过在滑动过程中在接触区域上沉积SnS ₂纳米片而形成的。