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Lubricants 2016, 4(1), 4; doi:10.3390/lubricants4010004

A Review of Transfer Films and Their Role in Ultra-Low-Wear Sliding of Polymers

1
Institute of Tribology, Hefei University of Technology, 230009 Hefei, China
2
Department of Mechanical Engineering, University of Delaware, Newark, DE 19716, USA
*
Author to whom correspondence should be addressed.
Academic Editors: Werner Oesterle and Ga Zhang
Received: 16 January 2016 / Revised: 3 February 2016 / Accepted: 16 February 2016 / Published: 26 February 2016
(This article belongs to the Special Issue Tribofilms and Solid Lubrication)
View Full-Text   |   Download PDF [2140 KB, uploaded 26 February 2016]   |  

Abstract

In dry sliding conditions, polytetrafluoroethylene (PTFE) composites can form thin, uniform, and protective transfer films on hard, metallic counterfaces that may play a significant role in friction and wear control. Qualitative characterizations of transfer film morphology, composition, and adhesion to the counterface suggest they are all good predictors of friction and, particularly, wear performance. However, a lack of quantitative transfer film characterization methods and uncertainty regarding specific mechanisms of friction and wear control make definitive conclusions about causal relationships between transfer film and tribological properties difficult. This paper reviews the state of the art in the solid lubricant transfer film literature and highlights recent advances in quantitative characterization thereof. View Full-Text
Keywords: PTFE composite; transfer film; morphology; adhesion; friction and wear PTFE composite; transfer film; morphology; adhesion; friction and wear
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Ye, J.; Burris, D.L.; Xie, T. A Review of Transfer Films and Their Role in Ultra-Low-Wear Sliding of Polymers. Lubricants 2016, 4, 4.

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