Effect of the Graphitization Mechanism on the Friction and Wear Behavior of DLC Films Based on Molecular Dynamics Simulations

被引：25
作者：
Zhu, Xiaohua [1 ]
Wang, Xiaowen [1 ]
Liu, Yunhai [1 ]
Luo, Yiyao [1 ]
Liu, Yi [1 ]
Zhang, Hu [1 ]
Zhao, Xiao [2 ]
机构：
[1] Southwest Petr Univ, Sch Mechatron Engn, Chengdu 610500, Peoples R China
[2] Pipechina Guizhou Pipeline Co Ltd, Guiyang 550081, Peoples R China
来源：
LANGMUIR | 2023年 / 39卷 / 05期
基金：
中国博士后科学基金; 中国国家自然科学基金;
关键词：
DIAMOND-LIKE-CARBON; GRAPHENE; SUPERLUBRICITY; ALGORITHMS; INSIGHTS;
D O I：
10.1021/acs.langmuir.2c02925
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Whether a graphitization mechanism can control the low-friction behavior of DLC films is still controversial. In this paper, we establish the molecular dynamics model of the DLC film with graphene (DLC-GR-DLC) by LAMMPS and study the influence of the graphitization mechanism on the friction and wear behavior of the DLC film. The friction force of the DLC-GR-DLC model in the running-in stage is significantly smaller than that of the DLC film and then gradually increases to the same size as that of the DLC film. Further analysis indicates that the graphitization mechanism could indeed reduce the shear stress of the friction interface when graphene remains intact. However, the curling and breaking of the graphene structure will lead to an increase in shear force at the friction interface.
引用
收藏
页码：1905 / 1913
页数：9
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