Study on the structure and corrosion resistance of MoS2/MgO micro-arc oxidation composite ceramic coating on the surface of ZK60 magnesium alloy

IF 2.3 4区材料科学 Q2 METALLURGY & METALLURGICAL ENGINEERING

Anti-corrosion Methods and Materials Pub Date : 2024-02-16 DOI:10.1108/acmm-11-2023-2923

Xiaowen Chen, Wanlin Xie, Song Tang, Meng Zhang, Hao Song, Qingzheng Ran, Defen Zhang

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Abstract

Purpose

The purpose of this study is to examine the impact of MoS₂ on the microstructure and characteristics of micro-arc oxidized (MAO) ceramic coatings created on ZK60 magnesium alloy through the addition of varying concentrations of MoS₂ particles to the electrolyte, aiming to enhance the corrosion resistance of magnesium alloy.

Design/methodology/approach

The surface morphology, roughness and phase composition of the coatings were analyzed using scanning electron microscopy, a hand-held roughness tester and an X-ray diffractometer, respectively, and the corrosion resistance of the MAO coatings prepared by the addition of different contents of MoS₂ particles was tested and analyzed using an electrochemical workstation.

Findings

The results demonstrate that MoS₂/MgO composite coatings have been successfully prepared on the surface of magnesium alloys through micro-arc oxidation. Furthermore, the corrosion resistance of the ZK60 magnesium alloy prepared with the addition of 1.0 g/L MoS₂ was the best compared to the other samples.

Originality/value

MoS₂ particles were able to penetrate the coatings successfully during the micro-arc oxidation process, acting as a barrier in the micropores to prevent the corrosion medium from touching the surface, thus improving the corrosion resistance of the sample. The electrochemical workstation was used to study the corrosion resistance of the MoS₂/MAO coating on the ZK60 magnesium alloy.

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ZK60 镁合金表面 MoS2/MgO 微弧氧化复合陶瓷涂层的结构和耐腐蚀性研究

目的本研究的目的是通过在电解液中添加不同浓度的 MoS2 颗粒，研究 MoS2 对 ZK60 镁合金微弧氧化（MAO）陶瓷涂层的微观结构和特性的影响，从而提高镁合金的耐腐蚀性。设计/方法/途径分别使用扫描电子显微镜、手持式粗糙度测试仪和 X 射线衍射仪分析了涂层的表面形貌、粗糙度和相组成，并使用电化学工作站测试和分析了通过添加不同含量的 MoS2 颗粒制备的 MAO 涂层的耐腐蚀性能。结果结果表明，通过微弧氧化法在镁合金表面成功制备了 MoS2/MgO 复合涂层。原创性/价值在微弧氧化过程中，MoS2 颗粒能够成功渗入涂层，在微孔中起到屏障作用，防止腐蚀介质接触表面，从而提高了样品的耐腐蚀性。电化学工作站用于研究 ZK60 镁合金上 MoS2/MAO 涂层的耐腐蚀性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Anti-corrosion Methods and Materials 工程技术-冶金工程

CiteScore

2.80

自引率

16.70%

发文量

审稿时长

13.5 months

期刊介绍： Anti-Corrosion Methods and Materials publishes a broad coverage of the materials and techniques employed in corrosion prevention. Coverage is essentially of a practical nature and designed to be of material benefit to those working in the field. Proven applications are covered together with company news and new product information. Anti-Corrosion Methods and Materials now also includes research articles that reflect the most interesting and strategically important research and development activities from around the world. Every year, industry pays a massive and rising cost for its corrosion problems. Research and development into new materials, processes and initiatives to combat this loss is increasing, and new findings are constantly coming to light which can help to beat corrosion problems throughout industry. This journal uniquely focuses on these exciting developments to make essential reading for anyone aiming to regain profits lost through corrosion difficulties. • New methods, materials and software • New developments in research and industry • Stainless steels • Protection of structural steelwork • Industry update, conference news, dates and events • Environmental issues • Health & safety, including EC regulations • Corrosion monitoring and plant health assessment • The latest equipment and processes • Corrosion cost and corrosion risk management.