Microbubble Phenomenon in the Grease Lubricating Film Induced by Micro-Oscillation

被引：0
|
作者：
Shuhai Liu
Dan Guo
Guoxin Xie
机构：
[1] China University of Petroleum,School of Mechanical and Transportation Engineering
[2] Tsinghua University,State Key Laboratory of Tribology
来源：
Tribology Letters | 2013年 / 51卷
关键词：
Grease; micro-oscillation; Microbubble;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
A microbubble phenomenon induced by micro-oscillation in the grease lubricating film confined within a nanogap between a highly polished steel ball and a smooth glass disc has been observed with an interferometer. Experimental results show that when the micro-oscillation frequency is a constant value, the microbubble number increases with the micro-oscillation amplitude. When the micro-oscillation amplitude is a constant value, the microbubble number increases with the micro-oscillation frequency when the latter is lower than the critical value and decreases with the micro-oscillation frequency when it is higher than the critical value. Theoretical models and analyses have been used to discuss the bubble formation and describe the characteristics of bubble movement.
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页码：143 / 151
页数：8
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