Potentiostatic oxidation of AgCu50 alloy in alkaline solution in the presence of chlorides

► An AgCu (50 mass.%) alloy was investigated during anodic oxidation. ► Oxidation was performed with and without the presence of chlorides. ► Oxidation in pure alkali begins on the area of the eutectic mixture. ► In the presence of chloride ions, oxides and chlorides form simultaneously. ► Voluminous deposits appear on the eutectic area and on silver spots inside α crystals.