Effect of process parameters on the growth and wear resistance of CrAlN coating on silicon nitride surface
Industrial Lubrication and Tribology
ISSN: 0036-8792
Article publication date: 29 January 2024
Issue publication date: 13 February 2024
Abstract
Purpose
Preparing CrAlN coatings on the surface of silicon nitride bearings can improve their service life in oil-free lubrication. This paper aims to match the optimal process parameters for preparing CrAlN coatings on silicon nitride surfaces, and reveal the microscopic mechanism of process parameter influence on coating wear resistance.
Design/methodology/approach
This study used molecular dynamics to analyze how process parameters affected the nucleation density, micromorphology, densification and internal stress of CrAlN coatings. An orthogonal test method was used to examine how deposition time, substrate temperature, nitrogen-argon flow rate and sputtering power impacted the wear resistance of CrAlN coatings under dry friction conditions.
Findings
Nucleation density, micromorphology, densification and internal stress have a significant influence on the surface morphology and wear resistance of CrAlN coatings. The process parameters for better wear resistance of the CrAlN coatings were at a deposition time of 120 min, a substrate temperature of 573 K, a nitrogen-argon flow rate of 1:1 and a sputtering power of 160 W.
Originality/value
Simulation analysis and experimental results of this paper can provide data to assist in setting process parameters for applying CrAlN coatings to silicon nitride bearings.
Keywords
Acknowledgements
The authors would like to deeply appreciate the support from the National Science Foundation of China (No. 51975388), the National Foreign Experts Programme (No. G2022006012L) and the Liaoning Applied Basic Research Programme (No. 2022JH2/101300234).
Compliance with ethical standards.
Conflict of interest: The authors declare that they have no conflict of interest.
Since submission of this article, the following author has updated their affiliation: Xu Bai is at the School of Mechanical Engineering, Shenyang University of Technology, Shenyang, China.
Citation
Lu, H., Wu, Y., Liu, Z., Wang, H., Yan, G., Bai, X., Guo, J. and Zheng, T. (2024), "Effect of process parameters on the growth and wear resistance of CrAlN coating on silicon nitride surface", Industrial Lubrication and Tribology, Vol. 76 No. 2, pp. 186-195. https://doi.org/10.1108/ILT-10-2023-0344
Publisher
:Emerald Publishing Limited
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