Corrosion susceptibility of Zn-Al alloys with different grains and dendritic microstructures in Nacl solutions

► The analysis of the susceptibility to corrosion of zinc-based alloys was performed. ► The corrosion resistance was analyzed by EIS as a principal technique. ► The corrosion susceptibility is a complex function which depends on several factors. ► Even at higher wt.%Al the resistance to corrosion depends on the microstructure. ► The way in which aluminium is distributed affects the response to corrosion.