Influence of Alloying Elements on the Dissolution Behavior of Al-Zn-In Series Sacrificial Anodes

The dissolution behavior and microstructure of Al-Zn-In sacrificial anodes with different contents of alloying elements in 0.5 mol/L NaCl solution was investigated using EIS,SEM and EDS.The contrast of electrochemical dissolution characteristics of sacrificial anodes with different contents of alloying elements showed that the sensibility of localized corrosion increased with the increase of iron content,but the increase of zinc content would effectively modify the localized corrosion behavior and increase the corrosion rate of anode.