Electrochemical behaviour of Al–Zn–Ga and Al–In–Ga alloys in chloride media

The influence of Ga content on the electrochemical behaviour of Al–Zn–Ga and Al–In–Ga alloys in chloride acid and acetic acid media was studied. The presence of Ga in concentration greater than 2.5 wt.% causes an open circuit potential (OCP) shifts of Al–Zn–Ga alloys in chloride solution towards more negative values (−1.38 V(SCE)). The OCP for Al–In–Ga alloys in chloride solution varies between −1.62 and −1.73 V(SCE). The anodic behaviour of these ternary alloys can be interpreted in terms of an amalgam mechanism.