Abstract
In this study, the microstructure of a hot-dipping Zn–6Al–3Mg alloy coating was characterized and its histomorphological, electrochemical and corrosion products changes when submerged in a 3.5 wt% NaCl solution were investigated. Further, the effects of different microstructures on the corrosion resistance of the coating and the corrosion mechanism were investigated. Different microstructures lead to significant differences in the corrosion resistance of the coating, indicating the different roles microstructures play in this process. The ternary eutectic phase was preferentially corroded, where corrosion products were formed preferentially and gradually covered the coating surface. This prevented the corrosive medium from further attacking the coating, improving its corrosion resistance.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
