Wettability surface and friction characterisation of ZrO2 ceramics by femtosecond laser texturing
Industrial Lubrication and Tribology
ISSN: 0036-8792
Article publication date: 5 December 2022
Issue publication date: 2 January 2023
Abstract
Purpose
The purpose of this study is to process the wettability surface of the ZrO2 ceramics to improve their surface friction performance.
Design/methodology/approach
Microtexture was processed on the surface of ZrO2 ceramics using a femtosecond laser. The three-dimensional texture morphology, surface contact angle, friction curve and wear morphology were measured by the laser confocal microscope, the contact angle meter, the reciprocating friction and wear tester and the scanning electron microscope, respectively. Based on Wenzel and partial impalement models, a geometric model of micro pits is established to study the influence mechanism of micro pit depth, diameter and distribution density on wettability and to analyze the relationship between surface wettability and tribological properties.
Findings
The results show that changing the geometric characteristics of the texture will lead to a change in the solid-liquid contact mode, and then lead to a change of in the surface contact angle. Wettability is an essential factor that affects the reduction of surface friction. The construction of a reasonable texture can enhance the surface hydrophilicity, which is conducive to the formation of a lubricating film on the ceramic surface, thereby reducing abrasive and adhesive wear, and improving the wear resistance of the ZrO2 ceramic surface.
Originality/value
The results provide a theoretical reference for femtosecond laser surface texture wettability regulation and tribological performance improvement.
Keywords
Acknowledgements
This work was supported by Scientific Research Project of Science and Technology Commission of Shanghai Municipality (Grant No.19511130400).
Conflict of interest. The authors declare that they have no conflicts of interest.
Citation
Yang, Q., You, Y., Cheng, B., Chen, L., Cheng, J., Lou, D., Wang, Y. and Liu, D. (2023), "Wettability surface and friction characterisation of ZrO2 ceramics by femtosecond laser texturing", Industrial Lubrication and Tribology, Vol. 75 No. 1, pp. 118-125. https://doi.org/10.1108/ILT-08-2022-0241
Publisher
:Emerald Publishing Limited
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