Interface characteristics of thin liquid films in a charged lubricated contact

被引：4
|
作者：
Xie, Guoxin [1 ]
Si, Lina [1 ]
Guo, Dan [1 ]
Liu, Shuhai [1 ]
Luo, Jianbin [1 ]
机构：
[1] Tsinghua Univ, State Key Lab Tribol, Beijing 100084, Peoples R China
来源：
SURFACE AND INTERFACE ANALYSIS | 2015年 / 47卷 / 03期
基金：
中国国家自然科学基金; 中国博士后科学基金;
关键词：
interface characteristics; thin liquid films; lubricated contact; SURFACE;
D O I：
10.1002/sia.5710
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The interface characteristics of liquid films confined within a nanogap between a steel ball and a smooth glass disk after exposing to an external electric field (EEF) are reported in the paper. The emergence of micro-bubbles induced by the EEF has been found to be closely related with the electric current flow at both a positive EEF and a negative EEF. The polarity effect of the variation in the electric current flowing through a polar liquid film over time is more pronounced than that through a nonpolar liquid film. The surface of the contacting pair with the polar liquid film confined after the removal of the EEF is more severely damaged at a negative EEF, while no indication of damage has been observed on the surface contacting the nonpolar liquid film at either polarity. The bubbles generated under a positive EEF can collapse more readily than those generated under a negative EEF. Different mechanisms of these experimental phenomena have been discussed in the paper. Copyright (c) 2014 John Wiley & Sons, Ltd.
引用
收藏
页码：315 / 324
页数：10
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