Optimization of Textured Parameters to Improve the Tribological Behavior of TC4-Based Bionic Coating Using RSM

Abstract

Inspired by the surface texture of bivalve shell, bionic wavy grooves were designed and prepared on the bionic coating of TC4 using laser marking technology. A response surface method was used to optimize the parameters of bionic texture structure for improving the tribological behavior. The influence of coupling mechanisms of bionic coating and texture on the tribological performance of TC4 alloy was investigated. The results show that the bionic wavy grooves reduce the fluctuation of loading force. The coupling of bionic texture and coating breaks the continuity of coating interface, and the peeling wear debris is easily captured by the bionic wavy grooves. The repairing effect of solid lubricant is increased, so the complete lubrication film can be formed more easily on the worn surface during the sliding process.

Keywords:

• TC4
• bionic texture
• parameter optimization
• tribological performance

Acknowledgements

This work was supported by the Guangdong Basic and Applied Basic Research Foundation (2021A1515010624). The authors are also grateful to X.L. Nie, Y.M. Li, M.J. Yang, W.T. Zhu, S.L. Zhao, and L.Q. Qin in the Material Research and Test Center of WUT for their kind help with SEM, EPMA, and FESEM.

Additional information

Funding

This work was supported by the Guangdong Basic and Applied Basic Research Foundation (2021A1515010624). The authors are also grateful to X.L. Nie, Y.M. Li, M.J. Yang, W.T. Zhu, S.L. Zhao, and L.Q. Qin in the Material Research and Test Center of WUT for their kind help with SEM, EPMA, and FESEM.