Anodic polarization curves (2 mV/s sweep) of indium doped E-AlMgSi aluminum conductor alloy (Aldrey) in (a) 0.03%, (b) 0.3% and (c) 3% NaCl media: (1) undoped alloy, (2) 0.05 wt.% indium, (3) 0.1 wt.% indium, (4) 0.5 wt.% indium and (5) 1.0 wt.% indium.