Fig. shows SEM images of the AZ31-xLi alloys immersed in the 0.05 M NaCl solution with 150 mM of sodium molybdate for 1 and 24 h. The surface morphology of all examined alloys was quite different compared to the solution without the inhibitor (Fig. ). No regions of severe local corrosion attack were seen on the surface, except for some local pitting on the surface of the AZ31-12Li alloy. The formation of a passivating Mo-containing layer is clearly seen on the surface of all alloys. After 24 h of exposure, the surfaces of AZ31-4Li and AZ31-8Li alloys do not show areas of severe corrosion attack, while some areas are covered with thick precipitate layers reach