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

IF 1.5 4区工程技术 Q3 ENGINEERING, MECHANICAL Industrial Lubrication and Tribology Pub Date : 2024-04-17 DOI:10.1108/ilt-12-2023-0427

Jian Sun, Zhanshuai Fan, Yi Yang, Chengzhi Li, Nan Tu, Jian Chen, Hailin Lu

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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/

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氧化石墨烯/聚乙烯醇复合材料涂层铝合金在微弧氧化后的摩擦学特性

目的铝合金因其重量轻、比强度高和易于加工而被认为是航空航天、汽车和其他领域的理想材料。然而，铝合金表面硬度和强度低是限制其应用的主要因素。本研究的目的是通过在 MAO 涂层上涂覆 GO-PVA 来获得一种具有高硬度和润滑性能的复合涂层。然后在 MAO 涂层上制备氧化石墨烯-聚乙烯醇（GO-PVA）复合涂层，用于后续实验。样品通过傅立叶红外光谱、X 射线衍射、拉曼光谱和热重分析进行表征。摩擦测试是通过铜球和铝盘在摩擦测试仪上的相对运动来进行的。研究结果研究结果表明，经过 GO-PVA 复合薄膜处理后，MAO 样品的摩擦系数降低了 80%。原创性/价值这项研究对铝合金轻量化设计所涉及的表面硬度和摩擦学问题做出了一定的贡献。同行评议本文的同行评议记录可在以下网址查阅：https://publons.com/publon/10.1108/ILT-12-2023-0427/。

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来源期刊

Industrial Lubrication and Tribology 工程技术-工程：机械

CiteScore

3.00

自引率

18.80%

发文量

129

审稿时长

1.9 months

期刊介绍： Industrial Lubrication and Tribology provides a broad coverage of the materials and techniques employed in tribology. It contains a firm technical news element which brings together and promotes best practice in the three disciplines of tribology, which comprise lubrication, wear and friction. ILT also follows the progress of research into advanced lubricants, bearings, seals, gears and related machinery parts, as well as materials selection. A double-blind peer review process involving the editor and other subject experts ensures the content''s validity and relevance.