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. (C) 2012 Elsevier B.V. All rights reserved.