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Tribological properties of aluminum alloy coated with graphene oxide/polyvinyl alcohol composites after micro-arc oxidation

Jian Sun (Group of Mechanical and Biomedical Engineering, College of Mechanical and Electronic Engineering, Xi'an Polytechnic University, Xi'an, China)
Zhanshuai Fan (Group of Mechanical and Biomedical Engineering, College of Mechanical and Electronic Engineering, Xi'an Polytechnic University, Xi'an, China)
Yi Yang (Group of Mechanical and Biomedical Engineering, College of Mechanical and Electronic Engineering, Xi'an Polytechnic University, Xi'an, China)
Chengzhi Li (Group of Mechanical and Biomedical Engineering, College of Mechanical and Electronic Engineering, Xi'an Polytechnic University, Xi'an, China)
Nan Tu (Group of Mechanical and Biomedical Engineering, College of Mechanical and Electronic Engineering, Xi'an Polytechnic University, Xi'an, China)
Jian Chen (Group of Mechanical and Biomedical Engineering, College of Mechanical and Electronic Engineering, Xi'an Polytechnic University, Xi'an, China)
Hailin Lu (Group of Mechanical and Biomedical Engineering, College of Mechanical and Electronic Engineering, Xi'an Polytechnic University, Xi'an, China)

Industrial Lubrication and Tribology

ISSN: 0036-8792

Article publication date: 17 April 2024

5

Abstract

Purpose

Aluminum alloy is considered an ideal material in aerospace, automobile and other fields because of its lightweight, high specific strength and easy processing. However, low hardness and strength of the surface of aluminum alloys are the main factors that limit their applications. The purpose of this study is to obtain a composite coating with high hardness and lubricating properties by applying GO–PVA over MAO coating.

Design/methodology/approach

A pulsed bipolar power supply was used as power supply to prepare the micro-arc oxidation (MAO) coating on 6061 aluminum sample. Then a graphene oxide-polyvinyl alcohol (GO–PVA) composite coating was prepared on MAO coating for subsequent experiments. Samples were characterized by Fourier infrared spectroscopy, X-ray diffraction, Raman spectroscopy and thermogravimetric analysis. The friction test is carried out by the relative movement of the copper ball and the aluminum disk on the friction tester.

Findings

Results showed that the friction coefficient of MAO samples was reduced by 80% after treated with GO–PVA composite film.

Originality/value

This research has made a certain contribution to the surface hardness and tribological issues involved in the lightweight design of aluminum alloys.

Peer review

The peer review history for this article is available at: https://publons.com/publon/10.1108/ILT-12-2023-0427/

Keywords

Acknowledgements

The authors wish to gratefully acknowledge grant support from National Natural Science Foundation of China (No. 52005381).

Conflict of interest: The authors declare that they have no known competing financial interests or personal relationships that could have influenced the work reported herein.

Credit author statement: The authors wish to gratefully acknowledge grant support from National Natural Science Foundation of China (No. 52005381). Zhanshuai Fan and Jian Sun developed the initial concept. All authors discussed the results and commented on the manuscript. The authors declare that they have no known competing financial interests or personal relationships that could have influenced the work reported herein.

Citation

Sun, J., Fan, Z., Yang, Y., Li, C., Tu, N., Chen, J. and Lu, H. (2024), "Tribological properties of aluminum alloy coated with graphene oxide/polyvinyl alcohol composites after micro-arc oxidation", Industrial Lubrication and Tribology, Vol. ahead-of-print No. ahead-of-print. https://doi.org/10.1108/ILT-12-2023-0427

Publisher

:

Emerald Publishing Limited

Copyright © 2024, Emerald Publishing Limited

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