Electrochemical Anodization of Mg Alloys: Fundamentals and State-of-the-Art Progress

Li, Qian

doi:10.1007/978-3-030-89976-9_19

Cited by 2 publications

References 67 publications

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Recent Progress of Corrosion Prevention Method of Magnesium Alloy

He,

Zhang,

Huang

et al. 2024

steel research int.

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Magnesium (Mg) and its alloys have received much attention in the aerospace, transportation, automotive industry, and military equipment fields due to their unique chemical and physical properties, such as their low density and high specific strength, particularly as the lightest structural metal materials, with the opportunity to achieve the design of lighter engineering systems. With the continuous improvement of processing technology, the application scope of magnesium alloy is rapidly expanding, and market demand is increasing. However, because of its significant electronegativity (2.37 V) and loose naturally formed oxide coating, magnesium has low corrosion resistance in comparison to other structural metal elements, severely limiting its large‐scale use. This review summarizes several typical anticorrosion methods for magnesium alloys, including chemical conversion coating treatment, anodic oxide film treatment, micro‐arc oxidation treatment, laser surface treatment, ion implantation, physical vapor deposition, and superhydrophobic coating. In most cases, the corrosion resistance of magnesium and its alloys has improved, but it has a certain degree of environmental damage. It is hoped that this review will contribute to further developing magnesium alloy materials in the field of preservative coating.

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Recent Progress of Corrosion Prevention Method of Magnesium Alloy

He,

Zhang,

Huang

et al. 2024

steel research int.

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Study of Corrosion Behavior of Hard Anodized Magnesium Alloy by Dow-17 Process

Marimuthu,

Manivannan,

Daniel Das

et al. 2024

SAE Technical Paper Series

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<div class="section abstract"><div class="htmlview paragraph">This study focuses on enhancing the corrosion resistance of AZ91D magnesium alloy, known for its impressive strength-to-weight ratio within the magnesium group. Despite its lightweight properties, the alloy's moderate corrosion and wear resistance have restricted its widespread use. To address this limitation, we explored the application of the Dow 17 process to enable hard anodizing of AZ91D magnesium alloy. Our primary objective is to investigate the impact of hard anodizing on AZ91D magnesium alloy and its potential to mitigate corrosion issues. Hard anodizing results in the formation of a robust oxide film on the alloy's surface. We posit that this oxide film can significantly reduce substrate corrosion, expanding the alloy's utility in various applications. To substantiate our claims, we conducted a comprehensive corrosion performance analysis of AZ91D magnesium alloy, with and without hard anodizing treatment. We employed advanced techniques, including potential dynamic polarization (PDP) and electrochemical impedance spectroscopy (EIS), to compare the corrosion behavior of treated and untreated specimens. Preliminary results suggest that the presence of a thick oxide layer resulting from hard anodizing greatly improves corrosion resistance properties. This promising outcome underscores the potential of hard anodizing as a method to enhance the corrosion resistance of AZ91D magnesium alloy, opening new possibilities for its application in diverse industrial applications. The key parameters of this research work are Coating Thickness, Anodizing Duration, Hard Anodizing Process and Surface Preparations.</div></div>

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Electrochemical Anodization of Mg Alloys: Fundamentals and State-of-the-Art Progress

Cited by 2 publications

References 67 publications

Recent Progress of Corrosion Prevention Method of Magnesium Alloy

Recent Progress of Corrosion Prevention Method of Magnesium Alloy

Study of Corrosion Behavior of Hard Anodized Magnesium Alloy by Dow-17 Process

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