High-Rate Laser Surface Texturing for Advanced Tribological Functionality

Lubricants

Sören Höhn¹  Sylvia Szokup¹  Johannes Pötschke¹  Erhard Leidich²  Friedemann Reiß²  Lutz Schneider³  Udo Löschner³  Jörg Schille³  Stefan Mauersberger³ 

[1] Fraunhofer Institute for Ceramic Technologies and Systems IKTS, Winterbergstrasse 28, 01277 Dresden, Germany;Institute of Design Engineering and Drive Technology IKAT, Chemnitz University of Technology, Reichenhainer Straße 70, 09126 Chemnitz, Germany;Laserinstitut Hochschule Mittweida, University of Applied Sciences Mittweida, Technikumplatz 17, 09648 Mittweida, Germany;

关键词: high-rate;    laser texturing;    high-power;    laser;    lipss;    tribology;    coefficient of friction;   

DOI  :  10.3390/lubricants8030033

来源: DOAJ

【 摘 要 】

This article features with the enhancement of the static coefficient of friction by laser texturing the contact surfaces of tribological systems tested under dry friction conditions. The high-rate laser technology was applied for surface texturing at unprecedented processing rates, namely using powerful ultrashort pulses lasers in combination with ultrafast polygon-mirror based scan systems. The laser textured surfaces were analyzed by ion beam slope cutting and Raman measurements, showing a crystallographic disordering of the produced microscopic surface features. The laser induced self-organizing periodic surface structures as well as deterministic surface textures were tested regarding their tribological behavior. The highest static coefficient of friction was found of µ₂₀ = 0.68 for a laser textured cross pattern that is 126% higher than for a fine grinded reference contact system. The line pattern was textured on a shaft-hub connection where the static coefficient of friction increased up to 75% that demonstrates the high potential of the technology for real-world applications.

【 授权许可】

Unknown