Molecular dynamics simulation of effects of nanoparticles on frictional heating and tribological properties at various temperatures

被引：39
作者：
Hu, Chengzhi [1 ]
Lv, Jizu [1 ]
Bai, Minli [1 ]
Zhang, Xiaoliang [1 ]
Tang, Dawei [1 ]
机构：
[1] Dalian Univ Technol, Sch Energy & Power Engn, Lab Ocean Energy Utilizat, Minist Educ, Dalian 116024, Peoples R China
来源：
FRICTION | 2020年 / 8卷 / 03期
基金：
中国国家自然科学基金;
关键词：
nanoparticles; molecular dynamics; temperature; tribological properties; CU NANOPARTICLES; DIAMOND NANOPARTICLES; SILICON DIOXIDE; LUBRICANT; OIL; PERFORMANCE; ADDITIVES; MECHANISM; ANTIWEAR; BEHAVIOR;
D O I：
10.1007/s40544-019-0271-9
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
The temperature of a friction pair exerts considerable influence on the tribological behavior of a system. In two cases, one with and the other without Cu (copper) nanoparticles, the temperature increase in friction pairs caused by frictional heating and its tribological properties at various temperatures are studied by using the molecular dynamics approach. The results show that temperature distribution and surface abrasion are significantly improved by the presence of Cu nanoparticles. This is one of the reasons for the improvements in tribological properties achieved in the presence of nanoparticles. The temperature and range of influence of frictional heating for the model without nanoparticles are significantly increased with the increase in the sliding velocity; however, in the model with nanoparticles, the temperature gradient is confined to the area near the Cu film. With an increase in the temperature of the friction pair, the improvement in anti-wear properties associated with the presence of Cu nanoparticles becomes more significant.
引用
收藏
页码：531 / 541
页数：11
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