Improvement of corrosion resistance of 7075 aluminum alloy by ceria coating modified by zinc oxide nanoparticles

IF 2.3 4区材料科学 Q2 METALLURGY & METALLURGICAL ENGINEERING Anti-corrosion Methods and Materials Pub Date : 2024-04-24 DOI:10.1108/acmm-05-2023-2803

Vahid Ahmadi, Seyed Mohammad Ali Hosseini, Effat Jamalizadeh, Razie Naghizade

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Abstract

Purpose

This paper aims to investigate the corrosion resistance of two types of coatings – one is ceria sol coating and the other is ceria sol coating modified by ZnO nanoparticles on 7075 aluminum alloy in 3.5% NaCl solution.

Design/methodology/approach

Aluminum alloys were dipped into ceria sol and ceria sol modified by ZnO nanoparticles separately and removed after 10 min from the solutions and dried at 110°C for 30 min and heated at 500 °C for 30 min to form the coatings. The coatings have been characterized by using field emission scanning electron microscopy (FE-SEM), electrochemical impedance spectroscopy (EIS), X-ray diffraction (XRD) and energy dispersive spectroscopy (EDS). The EIS tests were performed in a corrosive solution of 3.5% NaCl.

Findings

The results showed that the coating of ceria sol modified by ZnO nanoparticles has higher corrosion resistance than the ceria sol coating and the bare sample. Also, the best efficiency is related to aluminum sample immersion after 1 h in NaCl corrosive solution for coating modified by ZnO nanoparticles.

Originality/value

In this research, the modification of ceria sol coating by ZnO nanoparticles had an effect on improving the corrosion behavior of aluminum alloy. It is also understood that modification of coatings is an effective parameter on corrosion resistance.

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用纳米氧化锌修饰的铈涂层提高 7075 铝合金的耐腐蚀性能

本文旨在研究两种涂层--一种是铈溶胶涂层，另一种是氧化锌纳米粒子修饰的铈溶胶涂层--在 3.5% NaCl 溶液中对 7075 铝合金的耐腐蚀性能。将铝合金分别浸入铈溶胶和氧化锌纳米粒子修饰的铈溶胶中，10 分钟后从溶液中取出，在 110°C 下干燥 30 分钟，然后在 500°C 下加热 30 分钟，形成涂层。利用场发射扫描电子显微镜（FE-SEM）、电化学阻抗光谱（EIS）、X 射线衍射（XRD）和能量色散光谱（EDS）对涂层进行了表征。结果表明，氧化锌纳米粒子修饰的铈溶胶涂层比铈溶胶涂层和裸样品具有更高的耐腐蚀性。此外，氧化锌纳米粒子修饰的涂层在 NaCl 腐蚀溶液中浸泡 1 小时后，铝样品的耐腐蚀性能最佳。这也说明涂层改性是影响耐腐蚀性的一个有效参数。

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.