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Lubricants 2016, 4(3), 26; doi:10.3390/lubricants4030026

The Friction Reducing Effect of Square-Shaped Surface Textures under Lubricated Line-Contacts—An Experimental Study

1
National Centre for Advanced Tribology, University of Southampton, SO17 1BJ, Southampton, UK
2
National Physical Laboratory, TW11 0LW, Teddington, UK
3
Karlsruhe Institute of Technology, Karlsruhe Nano Micro Facility, Hermann-von-Helmholtz-Platz 1, 76344 Egg.-Leopoldshafen, Germany
*
Author to whom correspondence should be addressed.
Academic Editor: James E. Krzanowski
Received: 13 June 2016 / Revised: 3 July 2016 / Accepted: 7 July 2016 / Published: 11 July 2016
(This article belongs to the Special Issue Green Tribology)
View Full-Text   |   Download PDF [5570 KB, uploaded 11 July 2016]   |  

Abstract

Surface texturing has been shown to be an effective modification approach for improving tribological performance. This study examined the friction reduction effect generated by square dimples of different sizes and geometries. Dimples were fabricated on the surface of ASP2023 steel plates using femtosecond laser-assisted surface texturing techniques, and reciprocating sliding line contact tests were carried out on a Plint TE77 tribometer using a smooth 52100 bearing steel roller and textured ASP2023 steel plates. The tribological characterization of the friction properties indicated that the textured samples had significantly lowered the friction coefficient in both boundary (15% improvement) and mixed lubrication regimes (13% improvement). Moreover, the high data sampling rate results indicated that the dimples work as lubricant reservoirs in the boundary lubrication regime. View Full-Text
Keywords: square dimples; laser surface texturing; reciprocating sliding; mixed lubrication square dimples; laser surface texturing; reciprocating sliding; mixed lubrication
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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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MDPI and ACS Style

Lu, P.; Wood, R.J.K.; Gee, M.G.; Wang, L.; Pfleging, W. The Friction Reducing Effect of Square-Shaped Surface Textures under Lubricated Line-Contacts—An Experimental Study. Lubricants 2016, 4, 26.

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