The effect of nanoparticles on thin film elasto-hydrodynamic lubrication

被引：42
|
作者：
Ghaednia, Hamed [1 ]
Babaei, Hasan [1 ]
Jackson, Robert L. [1 ]
Bozack, Michael J. [2 ]
Khodadadi, J. M. [1 ]
机构：
[1] Auburn Univ, Dept Mech Engn, Auburn, AL 36849 USA
[2] Auburn Univ, Dept Phys, Leach Sci Ctr 270, Auburn, AL 36849 USA
来源：
APPLIED PHYSICS LETTERS | 2013年 / 103卷 / 26期
关键词：
ISOTHERMAL ELASTOHYDRODYNAMIC LUBRICATION; THERMAL-CONDUCTIVITY; FRICTION REDUCTION; POINT CONTACTS; DYNAMICS;
D O I：
10.1063/1.4858485
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Carefully conducted friction tests of a nano-lubricant in the thin film elasto-hydrodynamic lubrication regime showed that the presence of nanoparticles reduces friction. By using surface analyses techniques and molecular dynamics simulations, we explored the effectiveness of different interactions in the system, namely the interactions between nanoparticles with the lubricant or surfaces. Based on the results, the friction reduction mechanism was found to be that the nanoparticles induce an obstructed flow (plug flow) in the thin film between lubricated surfaces. This reduces friction by forcing only a few layers of lubricant molecules to slide on each other. (C) 2013 AIP Publishing LLC.
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页数：5
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