Effect of Compressive Prestrain on the Anti-Pressure and Anti-Wear Performance of Monolayer MoS2: A Molecular Dynamics Study

被引：7

作者：

Kong, Ning ^{[1
]}

Wei, Boyu ^{[1
]}

Zhuang, Yuan ^{[2
]}

Zhang, Jie ^{[1
]}

Li, Hongbo ^{[1
]}

Wang, Bo ^{[2
]}

机构：

[1] Univ Sci & Technol Beijing, Sch Mech Engn, Beijing 100083, Peoples R China

[2] Beijing Inst Spacecraft Syst Engn, Beijing 100094, Peoples R China

来源：

NANOMATERIALS | 2020年 / 10卷 / 02期

基金：

中国国家自然科学基金;

关键词：

monolayer MoS2; compressive prestrain; anti-wear; molecular dynamics; MOLYBDENUM-DISULFIDE; ELASTIC PROPERTIES; GRAIN-BOUNDARY; LOW FRICTION; GRAPHENE; VAPOR; NANOSCALE; STRAIN; WEAR; NANOPARTICLES;

D O I：

10.3390/nano10020275

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The effects of in-plane prestrain on the anti-pressure and anti-wear performance of monolayer MoS2 have been investigated by molecular dynamics simulation. The results show that monolayer MoS2 observably improves the load bearing capacity of Pt substrate. The friction reduction effect depends on the deformation degree of monolayer MoS2. The anti-pressure performance of monolayer MoS2 and Pt substrate is enhanced by around 55.02% when compressive prestrain increases by 4.03% and the anti-wear performance is notably improved as well. The improved capacities for resisting the in-plane tensile and out-of-plane compressive deformation are responsible for the outstanding lubrication mechanism of monolayer MoS2. This study provides guidelines for optimizing the anti-pressure and anti-wear performance of MoS2 and other two-dimension materials which are subjected to the in-plane prestrain.

引用

页数：14

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