期刊
TRIBOLOGY INTERNATIONAL
卷 75, 期 -, 页码 123-127出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.triboint.2014.03.014
关键词
Surface texturing; Laser ablation; Friction; Lubrication
资金
- Regione Apulia
- Italian Ministry of Education, University and Research [PON01_02238, PON02_00576_3333604]
We have investigated the friction properties of lubricated laser micro-textured surfaces. The micro-texture consists of a square lattice of micro-holes whose diameter, depth and spacing are controlled during the laser texturing process. All surfaces have the same texture area density, but different diameters and depths of the micro-holes. We measure the coefficient of friction on a range of sliding velocities from the mixed lubrication regime to the hydrodynamic regime. We find that the depth and the diameter of the micro-holes have a huge influence in determining the amount of friction reduction at the interface. Interestingly experiments also show that optimal micro-hole depth values, minimizing the friction in the hydrodynamic regime, are remarkably effective also in the mixed lubrication regime. (C) 2014 Elsevier Ltd. All rights reserved.
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