Coupling effect of boundary tribofilm and hydrodynamic film

Bao Jin; Guangyan Chen; Jun Zhao; Yongyong He; Yulong Li; Jianbin Luo

doi:10.1016/j.xcrp.2022.100778

Coupling effect of boundary tribofilm and hydrodynamic film

Bao Jin, Guangyan Chen, Jun Zhao^*, Yongyong He^*, Yulong Li, Jianbin Luo

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

24 Citations (Scopus)

Abstract

Reducing the friction and wear of dynamic interfaces has been a constant endeavor in the field of sustainability. Lubricants with two-dimensional atomic materials are operative frameworks proposed as promising candidates: they can together generate both a boundary tribofilm and a liquid hydrodynamic film in the interfacial domain. However, a quantitative characterization of the film formation and their coupling behaviors in the finite domain is lacking. Here, we report the coupling effect of tribofilms and hydrodynamic films regulated by typical representatives of two-dimensional material family (graphene, hBN, MoS₂, and WS₂). The anti-wear properties of the interfaces are attributed to the behavior of the tribofilm, whereas the anti-friction properties of the interfaces are attributed to the viscosity behavior of the hydrodynamic film. This study provides an understanding of the intrinsic coupling mechanism of a tribofilm and a hydrodynamic film and a possible strategy for the design of interfacial lubricating systems.

Original language	English
Article number	100778
Journal	Cell Reports Physical Science
Volume	3
Issue number	3
DOIs	https://doi.org/10.1016/j.xcrp.2022.100778
Publication status	Published - 16 Mar 2022
Externally published	Yes

Keywords

2D materials
hydrodynamic film
lubrication
tribofilm

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10.1016/j.xcrp.2022.100778

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title = "Coupling effect of boundary tribofilm and hydrodynamic film",

abstract = "Reducing the friction and wear of dynamic interfaces has been a constant endeavor in the field of sustainability. Lubricants with two-dimensional atomic materials are operative frameworks proposed as promising candidates: they can together generate both a boundary tribofilm and a liquid hydrodynamic film in the interfacial domain. However, a quantitative characterization of the film formation and their coupling behaviors in the finite domain is lacking. Here, we report the coupling effect of tribofilms and hydrodynamic films regulated by typical representatives of two-dimensional material family (graphene, hBN, MoS2, and WS2). The anti-wear properties of the interfaces are attributed to the behavior of the tribofilm, whereas the anti-friction properties of the interfaces are attributed to the viscosity behavior of the hydrodynamic film. This study provides an understanding of the intrinsic coupling mechanism of a tribofilm and a hydrodynamic film and a possible strategy for the design of interfacial lubricating systems.",

keywords = "2D materials, hydrodynamic film, lubrication, tribofilm",

author = "Bao Jin and Guangyan Chen and Jun Zhao and Yongyong He and Yulong Li and Jianbin Luo",

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doi = "10.1016/j.xcrp.2022.100778",

language = "English",

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T1 - Coupling effect of boundary tribofilm and hydrodynamic film

AU - Jin, Bao

AU - Chen, Guangyan

AU - Zhao, Jun

AU - He, Yongyong

AU - Li, Yulong

AU - Luo, Jianbin

PY - 2022/3/16

Y1 - 2022/3/16

N2 - Reducing the friction and wear of dynamic interfaces has been a constant endeavor in the field of sustainability. Lubricants with two-dimensional atomic materials are operative frameworks proposed as promising candidates: they can together generate both a boundary tribofilm and a liquid hydrodynamic film in the interfacial domain. However, a quantitative characterization of the film formation and their coupling behaviors in the finite domain is lacking. Here, we report the coupling effect of tribofilms and hydrodynamic films regulated by typical representatives of two-dimensional material family (graphene, hBN, MoS2, and WS2). The anti-wear properties of the interfaces are attributed to the behavior of the tribofilm, whereas the anti-friction properties of the interfaces are attributed to the viscosity behavior of the hydrodynamic film. This study provides an understanding of the intrinsic coupling mechanism of a tribofilm and a hydrodynamic film and a possible strategy for the design of interfacial lubricating systems.

AB - Reducing the friction and wear of dynamic interfaces has been a constant endeavor in the field of sustainability. Lubricants with two-dimensional atomic materials are operative frameworks proposed as promising candidates: they can together generate both a boundary tribofilm and a liquid hydrodynamic film in the interfacial domain. However, a quantitative characterization of the film formation and their coupling behaviors in the finite domain is lacking. Here, we report the coupling effect of tribofilms and hydrodynamic films regulated by typical representatives of two-dimensional material family (graphene, hBN, MoS2, and WS2). The anti-wear properties of the interfaces are attributed to the behavior of the tribofilm, whereas the anti-friction properties of the interfaces are attributed to the viscosity behavior of the hydrodynamic film. This study provides an understanding of the intrinsic coupling mechanism of a tribofilm and a hydrodynamic film and a possible strategy for the design of interfacial lubricating systems.

KW - 2D materials

KW - hydrodynamic film

KW - lubrication

KW - tribofilm

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DO - 10.1016/j.xcrp.2022.100778

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VL - 3

JO - Cell Reports Physical Science

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ER -

Coupling effect of boundary tribofilm and hydrodynamic film

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Keywords

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