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Possibilities of Dry and Lubricated Friction Modification Enabled by Different Ultrashort Laser-Based Surface Structuring Methods

1
Applied Laser and Photonics Group, University of Applied Sciences Aschaffenburg, Würzburger Straße 45, 63743 Aschaffenburg, Germany
2
Laser-Laboratorium Göttingen e.V., Hans-Adolf-Krebs-Weg 1, 37077 Göttingen, Germany
3
Applied Laser Technologies, Ruhr-Universität Bochum, Universitätsstraße 150, 44801 Bochum, Germany
*
Author to whom correspondence should be addressed.
Lubricants 2019, 7(5), 43; https://doi.org/10.3390/lubricants7050043
Received: 16 April 2019 / Revised: 10 May 2019 / Accepted: 13 May 2019 / Published: 17 May 2019
PDF [16676 KB, uploaded 17 May 2019]

Abstract

In this contribution we report on the possibilities of dry and lubricated friction modification
introduced by different laser surface texturing methods. We compare the potential of Laser-Induced
Periodic Surface Structures and Laser Beam Interference Ablation on 100Cr6 steel in a linear
reciprocating ball-on-disc configuration using 100Cr6 steel and tungsten carbide balls with load
forces between 50mN and 1000 mN. For dry friction, we find a possibility to reduce the coefficient
of friction and we observe a pronounced direction dependency for surfaces fabricated by Laser
Beam Interference Ablation. Furthermore, Laser-Induced Periodic Surface Structures result in a
load-dependent friction reduction for lubricated linear reciprocating movements. This work helps
to identify the modification behaviour of laser generated micro structures with feature sizes of
approximately 1μm and reveals new possibilities for surface engineering.
Keywords: laser-induced periodic surface structures; laser beam interference ablation; dry friction; lubricated friction; laser surface texturing; smart surfaces laser-induced periodic surface structures; laser beam interference ablation; dry friction; lubricated friction; laser surface texturing; smart surfaces
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

Rung, S.; Bokan, K.; Kleinwort, F.; Schwarz, S.; Simon, P.; Klein-Wiele, J.-H.; Esen, C.; Hellmann, R. Possibilities of Dry and Lubricated Friction Modification Enabled by Different Ultrashort Laser-Based Surface Structuring Methods. Lubricants 2019, 7, 43.

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