Experimental study on lubrication film thickness under different interface wettabilities

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

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Author(s)

Detail(s)

Original languageEnglish
Pages (from-to)81-88
Journal / PublicationTribology Letters
Volume54
Issue number1
Online published25 Feb 2014
Publication statusPublished - Apr 2014

Abstract

This paper describes some experimental studies about the effect of interface wettability on hydrodynamic lubrication film thickness by a custom-made slider bearing tester. The lubricated contact pair consists of a fixed-incline slider and a transparent disc, and a thin lubrication film can be generated when the disc rotates. The film thickness was measured by interferometry. The wettability of different slider surfaces was evaluated by the contact angle of the lubricant on them. The relationship of film thickness versus disc speed was measured under different liquid-solid interfaces, and the results showed that slider surfaces with strong wettability to the lubricant could generate higher film thickness. Furthermore, case experiments were carried out to validate the hydrodynamic effect by tailored-slippage. By numerical simulations, the experimental findings were tentatively explained with the phenomenon of wall slippage. © 2014 Springer Science+Business Media New York.

Research Area(s)

  • Film thickness, Hydrodynamic lubrication, Interface slippage, Interferometry, Wettability

Citation Format(s)

Experimental study on lubrication film thickness under different interface wettabilities. / Guo, F.; Yang, S. Y.; Ma, C. et al.
In: Tribology Letters, Vol. 54, No. 1, 04.2014, p. 81-88.

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review