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期刊论文

Characteristics of Liquid Lubricant Films at the Nano-Scale

温诗铸Jianbin Luo Ping Huang Shizhu Wen Lawrence K. Y. Li

Transactions of the ASME Vol. 121, OCTOBER 1999,-0001,():

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摘要/描述

Characteristics of a liquid lubricant film at the nanometer scale are discussed in the present paper. The variations of the film thickness in a central contact region between a glass disk and a super-polished steel ball with lubricant viscosity, rolling speed, substrate surface tension, running time, load, etc. have been investigated. Experimen. tal results show that the variation of film thickness in the thin film lubrication (TFL) regime is largely different from that in the elastohydrodynamic lubrication (EHL) regime. The critical transition point from EHL to TFL is closely related to lubricant viscosity, surface energy of substrates, "and so on. The film in TFL is much thicker than that calculated from the Hamrock-Dowson formula. An unusual behavior of the lubricant film has also been observed when the effect of the running time on the film thickness is considered. The time effect and the formation mechanism of the enhanced film in the running process have been discussed.

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版权说明:以下全部内容由温诗铸上传于   2005年03月08日 00时11分01秒,版权归本人所有。

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