Genesis and mechanism of microstructural scale deformation and cracking in ZnAlMg coatings

Ahmadi, Masoud; Salgın, Bekir; Kooi, Bart J.; Pei, Yu

doi:10.1016/j.matdes.2019.108364

Cited by 21 publications

(2 citation statements)

References 37 publications

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“…Zinc has been widely used to protect the steel substrate from corrosion [1]. Adding magnesium into the zinc coating can greatly improve the corrosion resistance of the coating [2][3][4]. Continuous hot-dip galvanized Zn-Al-Mg coated steel sheet has been recognized by the majority of consumers, and has been widely used in China [5][6].…”

Section: Introductionmentioning

confidence: 99%

Effect of Substrate Temperature on Structure of Vacuum Evaporated Zinc-Magnesium Alloy Coating

Liu

Qiu

Liu

et al. 2023

J. Phys.: Conf. Ser.

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In order to solve the problem that the poor plating ability of Galvanized ultra-high strength steel automobile sheet made by traditional continuous hot-dip galvanizing method and the problem that it is difficult to prepare high magnesium (more than 3%) content coated steel sheet by traditional continuous hot-dip galvanizing method. In this chapter, Zn-Mg coating was evaporated at substrate temperature of 50 °C, 100 °C, 150 °C and 200 °C by double source co-evaporation method, and the microstructure and adhesion of single-layer Zn Mg coating were analyzed. The results show that, with the increasing of substrate temperature, the surface grains of zinc magnesium coating have a trend of increasing gradually, but the adhesion of the coating has a trend of decreasing, among which ZnMg-100 coating has the best adhesion.

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Section: Introductionmentioning

confidence: 99%

Effect of Substrate Temperature on Structure of Vacuum Evaporated Zinc-Magnesium Alloy Coating

Liu

Qiu

Liu

et al. 2023

J. Phys.: Conf. Ser.

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“…Previous research has shown the brittle MgZn 2 intermetallic that forms as part of the binary eutectic phase can cause the coating to crack during bending and cause a range of surface finish defects 13 . Exposure of the steel substrate to an electrolyte acts as a cathodic driving force for corrosion, causing accelerated dissolution of the Zn coating.…”

mentioning

confidence: 99%

Effect of antimony additions on the microstructure and performance of Zn–Mg–Al alloy coatings

Britton,

Penney,

Malla

et al. 2024

npj Mater Degrad

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Microscopy, electrochemical techniques and mechanical testing are used to investigate the effect of varying antimony additions (0.45–1.8 wt%) on the microstructure and corrosion properties of zinc-magnesium-aluminium coating alloys. Samples were produced by splat casting to produce high cooling rates similar to those seen in a continuous galvanising line. X-Ray Microscopy reveals that the Sb additions produce disk-shaped Mg3Sb2 intermetallics, subsequently reducing or eliminating the MgZn2 eutectic. Electrochemical testing in 1 wt% NaCl shows that the Mg3Sb2 phase is cathodic with respect to the bulk alloy with slower oxygen reduction kinetics. The decrease in eutectic content leads to less intense anodic activity. The combined effect is anodic and cathodic deactivation, which leads to a 43% reduction in corrosion rate as measured through LPR compared to the base alloy. This work shows that quaternary additions to ZMA coating alloys can be a potential route to improved corrosion resistance for galvanic protection.

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Investigation of the Critical Factors Influencing Mechanical Properties and Failure Behavior in Weld-Brazed ZnAlMg Coated Steel

Sarmast-Ghahfarokhi,

Ghatei-Kalashami,

Zhang

et al. 2024

Metall Mater Trans A

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Genesis and mechanism of microstructural scale deformation and cracking in ZnAlMg coatings

Cited by 21 publications

References 37 publications

Effect of Substrate Temperature on Structure of Vacuum Evaporated Zinc-Magnesium Alloy Coating

Effect of Substrate Temperature on Structure of Vacuum Evaporated Zinc-Magnesium Alloy Coating

Effect of antimony additions on the microstructure and performance of Zn–Mg–Al alloy coatings

Investigation of the Critical Factors Influencing Mechanical Properties and Failure Behavior in Weld-Brazed ZnAlMg Coated Steel

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