期刊
TRIBOLOGY INTERNATIONAL
卷 173, 期 -, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.triboint.2022.107621
关键词
Rough surface; Graphene; Friction; Interlocking
资金
- European Research Council (ERC) under the European Union [681813]
- European Research Council (ERC) [681813] Funding Source: European Research Council (ERC)
Experiments and simulations have shown that friction decreases significantly when graphene is used as a solid lubricant on various materials, but the impact of increasing the number of graphene layers on lubrication is controversial. Atomistic simulations in this study reveal that increasing the number of graphene layers can drastically reduce friction and change the deformation mechanism.
It has been demonstrated through experiments and simulations that friction decreases significantly when graphene is used as a solid lubricant on various materials. However, the effect of increasing the number of graphene layers on lubrication is controversial. Some studies predict an increase of friction with the number of layers that can be imputed to increased contact area, others a decrease in friction attributed to increased flexural rigidity of the layers. Herein, atomistic simulations are performed to investigate the atomic mechanisms by which few-layers graphene lubricate rough copper surfaces when probed by a smooth tip. The results of the simulations show that increasing the number of graphene layers drastically reduces friction, while the deformation mechanism is found to change from atomic wear to recoverable flattening of surface steps, as the amount of interlocking between the surfaces is reduced.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据