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	Characteristics of thin liquid film under an external electric field
	He, Yu ; Luo, Hanbin ; Xie, Guoxin
	2010-05-10 ; 2010-05-10 ; OCT,DEC
会议名称	TRIBOLOGY INTERNATIONAL ; 33rd Leeds-Lyon Symposium on Tribology ; Leeds, ENGLAND ; Web of Science
关键词	gas bubble cavitation TFL electric field TRIBOLOGICAL PROPERTIES THICKNESS Engineering, Mechanical
中文摘要	Cavitation is a serious problem in bearings when they are used in the electric field. When an external electric field (EFF) was applied on a lubricant film with a thickness about a few nanometers, which was in a nanogap between a smooth plate coated with a SiO2 layer and a highly polished steel ball, some gas micro-bubbles emerged around the edge of the central contact region and then moved away in the radial direction from the central region. Experimental results indicated that the emergence of the bubbles was largely dependent on the polarity of the liquid, the external voltage, and the pressure in the central contact region. It is thought that the emergence of the bubbles is due to the vibration of the liquid surface or overheating of the liquid, and the power pushing the micro-bubbles to move are from the pressure difference and the electric field difference on edge of the central region. The discussion of the difference between the static case and dynamic one is emphasized with our proposed mechanism further. (c) 2007 Elsevier Ltd. All rights reserved.; Trinity & All Saints Coll
会议录出版者	ELSEVIER SCI LTD ; OXFORD ; THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND
语种	英语 ; 英语
内容类型	会议论文
源URL	[http://hdl.handle.net/123456789/19363]
专题	清华大学
推荐引用方式 GB/T 7714	He, Yu,Luo, Hanbin,Xie, Guoxin. Characteristics of thin liquid film under an external electric field[C]. 见:TRIBOLOGY INTERNATIONAL, 33rd Leeds-Lyon Symposium on Tribology, Leeds, ENGLAND, Web of Science.

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