Comparative analysis demonstrates evolving corrosion mechanisms across the lifespan of Zn-19%Al-6%Mg-Si coatings, highlighting key structural factors driving extended corrosion resistance.
The purpose of this report is to compare the coating structure and corrosion mechanism of newly developed Zn-19%Al-6Mg-Si with conventional Zn-Al-Mg alloy coating Zn-11%Al-3%Mg-0.2%Si. In past papers the corrosion resistance of Zn-Al-Mg alloy coating layers was mainly discussed based on analysis methods that focus on one aspect of early corrosion stage. However, this report focuses on the changes in the corrosion mechanism until the end of the coating lifespan and picks up the factors of the coating layer that contribute to corrosion resistance.
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Tokuda et al. (2024) studied this question.
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