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Effects of nano-SiO2 particle addition on the structure and properties of micro-arc oxidation ceramic coatings on 7075 aluminum alloy

Song Tang (Southwest Petroleum University, Chengdu, China)
Xiaowen Chen (Southwest Petroleum University, Chengdu, China)
Defen Zhang (Southwest Petroleum University, Chengdu, China)
Wanlin Xie (Southwest Petroleum University, Chengdu, China)
Qingzheng Ran (Southwest Petroleum University, Chengdu, China)
Bin Luo (Southwest Petroleum University, Chengdu, China)
Han Luo (Southwest Petroleum University, Chengdu, China)
Junwei Yang (Southwest Petroleum University, Chengdu, China)

Anti-Corrosion Methods and Materials

ISSN: 0003-5599

Article publication date: 2 May 2024

51

Abstract

Purpose

The purpose of this study is to investigate the influence of varying concentrations of nano-SiO2 particle doping on the structure and properties of the micro-arc oxidation (MAO) coating of 7075 aluminum alloy. This research aims to provide novel insights and methodologies for the surface treatment and protection of 7075 aluminum alloy.

Design/methodology/approach

The surface morphology of the MAO coating was characterized using scanning electron microscope. Energy spectrometer was used to characterize the elemental content and distribution on the surface and cross section of the MAO coating. The phase composition of the MAO coating was characterized using X-ray diffractometer. The corrosion resistance of the MAO coating was characterized using an electrochemical workstation.

Findings

The results showed that when the addition of nano-SiO2 particles is 3 g/L, the corrosion resistance is optimal.

Originality/value

This study investigated the influence of different concentrations of nano-SiO2 particles on the structure and properties of the MAO coating of 7075 aluminum alloy.

Keywords

Acknowledgements

The author (Dr Chen) thanks the National Natural Science Foundation of China (No. 51774249) and the State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation (Southwest Petroleum University) for the Open Fund (PLN2021-22) and the Sichuan Provincial Engineering Research Center for Advanced Materials Preparation Technology for Shale Gas Efficient Exploitation Fund (No. 2022SCYYQKCCL012) to conduct this research investigation.

Citation

Tang, S., Chen, X., Zhang, D., Xie, W., Ran, Q., Luo, B., Luo, H. and Yang, J. (2024), "Effects of nano-SiO2 particle addition on the structure and properties of micro-arc oxidation ceramic coatings on 7075 aluminum alloy", Anti-Corrosion Methods and Materials, Vol. ahead-of-print No. ahead-of-print. https://doi.org/10.1108/ACMM-01-2024-2956

Publisher

:

Emerald Publishing Limited

Copyright © 2024, Emerald Publishing Limited

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