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Effects of polyvinylidene fluoride sealing on micro-arc oxidation coating of 7075 aluminum alloy

J. Li (School of Materials Science and Engineering, Changzhou University, Changzhou Jiangsu, China)
R.G. Song (School of Materials Science and Engineering, Changzhou University, Changzhou Jiangsu, China)
X. Qi (School of Materials Science and Engineering, Changzhou University, Changzhou Jiangsu, China)
C. Wang (School of Materials Science and Engineering, Changzhou University, Changzhou Jiangsu, China)
B. Jiang (School of Materials Science and Engineering, Changzhou University, Changzhou Jiangsu, China)

Anti-Corrosion Methods and Materials

ISSN: 0003-5599

Article publication date: 10 December 2021

Issue publication date: 3 January 2022

148

Abstract

Purpose

The purpose of this is to study the effects of organic sealing on the structure and performance of the micro-arc oxidation (MAO) film of 7075 aluminum alloy.

Design/methodology/approach

The 7075 aluminum alloy was treated by micro-arc oxidation technology, then the MAO films were sealed by polyvinylidene fluoride (PVDF) solutions with different concentrations to forms a MAO/PVDF composite coating on the surface of the 7075 aluminum alloy matrix.

Findings

The results show that the MAO/PVDF film thickness increased to 24.8 um. When the PVDF concentration was 8 g/L, and the sealed film reached best corrosion resistance and wear resistance.

Originality/value

The effects of different concentrations of PVDF on microarc oxidation properties of 7075 aluminum alloy were studied.

Keywords

Acknowledgements

Funding: Supported by National Natural Science Foundation of China (51871031).

Citation

Li, J., Song, R.G., Qi, X., Wang, C. and Jiang, B. (2022), "Effects of polyvinylidene fluoride sealing on micro-arc oxidation coating of 7075 aluminum alloy", Anti-Corrosion Methods and Materials, Vol. 69 No. 1, pp. 1-8. https://doi.org/10.1108/ACMM-04-2021-2478

Publisher

:

Emerald Publishing Limited

Copyright © 2021, Emerald Publishing Limited

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