Recent research advances on corrosion mechanism and protection, and novel coating materials of magnesium alloys: a review

Wei, Lirong; Gao, Ziyuan

doi:10.1039/d2ra07829e

Cited by 20 publications

(4 citation statements)

References 265 publications

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“…Efforts to enhance the corrosion resistance of magnesium alloys involve various techniques such as heat treatment [27][28][29], alloying with elements [9], and surface modification [30][31][32][33]. Surface modifications can improve corrosion resistance and durability effectively, while it can be complex, damage the matrix and potentially impact dimensional tolerances.…”

Section: Introductionmentioning

confidence: 99%

Effect of T4 treatment on the corrosion resistance of Mg-4Al-6Er-0.3Mn alloy

Liang,

Ma,

Qin

et al. 2024

Mater. Res. Express

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The Mg-Al alloys exhibit poor corrosion resistance when they exposed to Cl- attack. To solve this problem, Erbium (Er) and Manganese (Mn) are added to the Mg-4Al alloy and the Mg-4Al-6Er-0.3Mn is T4 treated to enhance the corrosion resistance of the alloy. Then the corrosion behaviors of the as-extruded alloy and the T4 alloy are investigated in this paper. It is found that the effective cathode Mg17Al12 is significantly reduced in the alloy due to the precipitation of Mg17Al12 being suppressed by Al2Er and the dissolution of the Mg17Al12 in the alloy. It is observed that the corrosion products transform from needle-like to tetrahedral-shaped corrosion products during the transformation process, which leads to severe pit corrosion. The results show that the T4 treatment can delay the transformation of the morphologies of the corrosion products, thereby improved the alloy corrosion resistance during the early stages of corrosion.

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Section: Introductionmentioning

confidence: 99%

Effect of T4 treatment on the corrosion resistance of Mg-4Al-6Er-0.3Mn alloy

Liang,

Ma,

Qin

et al. 2024

Mater. Res. Express

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“…At present, to improve the corrosion resistance of magnesium alloys, the most commonly used and extensive method is to modify the surface of magnesium alloys (Wang et al , 2019; Jiang et al , 2022; Zhou et al , 2020). The principle of surface modification is to add a barrier layer between the metals and corrosive medium, the layer will reduce the corrosion tendency thermodynamically and hinder the diffusion of the corrosive medium kinetically (Wei and Gao, 2023). Building a protective coating on the surface would prevent corrosion from directly occurring on Mg surfaces.…”

Section: Introductionmentioning

confidence: 99%

Research advances on superhydrophobic coating for metal surfaces via one-step electrodeposition

Chen,

He,

Kang

et al. 2024

ACMM

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Purpose This study aims to review the current one-step electrodeposition of superhydrophobic coatings on metal surfaces. Design/methodology/approach One-step electrodeposition is a versatile and simple technology to prepare superhydrophobic coatings on metal surfaces. Findings Preparing superhydrophobic coatings by one-step electrodeposition is an efficient method to protect metal surfaces. Originality/value Even though there are several technologies, one-step electrodeposition still plays a significant role in producing superhydrophobic coatings.

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“…4 Magnesium has high chemical activity, is prone to galvanic corrosion with other metals and has poor corrosion resistance. 5…”

Section: Introductionmentioning

confidence: 99%

“…4 Magnesium has high chemical activity, is prone to galvanic corrosion with other metals and has poor corrosion resistance. 5 So far, scholars have done a lot of research on improving the properties of magnesium alloys. Zhang et al 6 showed that the yield strength and ultimate tensile strength of Mg-2Ag alloy increased significantly after multi-pass hot rolling treatment, and the elongation also changed with the increase of rolling passes.…”

Section: Introductionmentioning

confidence: 99%

Effect of annealing on AZ31 magnesium alloy on MAO coatings

Lu,

Jiang,

Fan

et al. 2024

Surface Engineering

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AZ31 magnesium alloy with different annealing temperatures was subjected to micro-arc oxidation (MAO) treatment, and its corrosion behaviour was studied using immersion experiments, polarisation curves, electrochemical impedance spectra, scanning electron microscopy (SEM) and X-ray diffraction (XRD) spectra. The alloy, when annealed at 300 °C, had the smallest grain size and the lowest electrical conductivity. Compared to other annealed alloys, the MAO coating had the smallest pore size and porosity and better corrosion resistance. The corrosion resistance of the alloy increased initially and then decreased with the increase in annealing temperature. This is mainly because the grain size first decreases and then increases, leading to a decline in electrical conductivity and then a rise, resulting in changes in the microstructure of the coating surface.

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Recent research advances on corrosion mechanism and protection, and novel coating materials of magnesium alloys: a review

Abstract: The performance of magnesium alloy implants has been continuously improved in recent years. This review discusses the types, corrosion mechanisms and corrosion control of medical magnesium alloys in recent years.

Cited by 20 publications

References 265 publications

Effect of T4 treatment on the corrosion resistance of Mg-4Al-6Er-0.3Mn alloy

Effect of T4 treatment on the corrosion resistance of Mg-4Al-6Er-0.3Mn alloy

Research advances on superhydrophobic coating for metal surfaces via one-step electrodeposition

Effect of annealing on AZ31 magnesium alloy on MAO coatings

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