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Friction reduction mechanisms of TiN film sliding in graphene aqueous dispersion
Lubrication Science ( IF 1.9 ) Pub Date : 2022-01-23 , DOI: 10.1002/ls.1576
Yunfeng Wang 1 , Yongjun Li 1 , Guizhi Wu 2 , Zhibin Lu 2
Affiliation  

The lamellar structure and weak interlayer shear force of graphene endow itself potential application value in lubrication fields, while its lubrication performance has been vastly investigated in various fields. However, there are few studies on the composite tribological performance of graphene and ceramic films. In this study, a solid–liquid lubricating system which TiN film slides in graphene aqueous dispersion is developed, aiming to achieve low friction of the TiN ceramic film in macroscale contact. Two kinds of TiN films were obtained by multi-arc ion plating and magnetron sputtering respectively. The tribological test show that the friction coefficient of the TiN film drops when adding graphene aqueous dispersion and varies with the concentrations of graphene. The results indicate that the graphene might act in two ways to achieve low friction of TiN film, which are liquid lubricating effect of solvents and the formation of smooth sliding interface promoted by graphene.

中文翻译:

TiN薄膜在石墨烯水分散体中滑动的减摩机理

石墨烯的层状结构和较弱的层间剪切力使其在润滑领域具有潜在的应用价值,而其润滑性能在各个领域都得到了广泛的研究。然而,关于石墨烯和陶瓷薄膜的复合摩擦学性能的研究很少。本研究开发了一种TiN薄膜在石墨烯水分散体中滑动的固-液润滑系统,旨在实现TiN陶瓷薄膜在宏观接触中的低摩擦。分别通过多弧离子镀和磁控溅射获得两种TiN薄膜。摩擦学测试表明,添加石墨烯水分散体后,TiN薄膜的摩擦系数下降,并随石墨烯的浓度而变化。
更新日期:2022-02-10
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