Effects of laser surface texturing on tribological properties of Ti-6Al-4V in hydroxyethyl-cellulose water-based lubrication
Industrial Lubrication and Tribology
ISSN: 0036-8792
Article publication date: 21 November 2018
Issue publication date: 3 April 2019
Abstract
Purpose
This paper aims to investigate the effect of laser surface texturing on the tribological performance of Ti-6Al-4V disks sliding against Si3N4 balls under hydroxyethyl-cellulose water-based lubrication. The friction coefficients and wear losses of textured and untextured disks were measured and compared. The results indicate that the texture patterns can lead to reduction of friction and wear in the condition of water-based lubrication.
Design/methodology/approach
Solutions of hydroxyethyl cellulose were used as water-based lubricants. To find the optimal laser texturing parameters for the best performance enhancement, three line-like patterns were fabricated onto the disks and three machining parameters were used for each type of pattern. Tribological tests were conducted in rotation sliding with ball-on-disk contact configuration on UMT-2.
Findings
A higher density of texture lines leads to a larger friction and wear reduction. Compared with untextured disks, the friction coefficient is reduced from 0.043 to 0.028 for textured disks. Some unworn parts were detected in the contact region of the balls against textured disks, which were not found on the balls against untextured disks. The worn surfaces indicated that periodic geometry of the contact track was rebuilt during run-in period, which was beneficial for the formation of lubricant films.
Originality/value
In this work, laser surface texturing was used to reduce the friction and wear of Ti-6Al-4V specimens in water-based lubrication, which can be used to improve the tribological performance of Ti-6Al-4V components in mechanical equipment.
Keywords
Acknowledgements
The authors are grateful to the National Natural Science Foundation of China (No: 51335005).
Citation
Sheng, D., Ni, T., Zou, M. and Zhang, H. (2019), "Effects of laser surface texturing on tribological properties of Ti-6Al-4V in hydroxyethyl-cellulose water-based lubrication", Industrial Lubrication and Tribology, Vol. 71 No. 3, pp. 390-397. https://doi.org/10.1108/ILT-07-2018-0285
Publisher
:Emerald Publishing Limited
Copyright © 2018, Emerald Publishing Limited