This section summarizes the results of the present contribution and attempts to propose the corrosion mechanism of AZ31-xLi alloys in 0.05 M NaCl solutions and their inhibition by aqueous molybdate species. The surface of as-polished AZ31-xLi ions consisted of the alloy matrix and several types of IMPs. The most important difference with the increase of lithium content in AZ31-xLi (x = 4, 8, 12) alloys, is the change of the crystal structure from α-phase hcp (AZ31-4Li) to βphase bcc (AZ31-12Li) through a mixed α+ β phase (AZ31-8Li). Therefore, the corrosion resistance of examined alloys should be mainly defined by the corrosion resistance of the bulk αand β-phases and microgalvanic activity between the alloys' matrix and IMPs. Li et al. reported a decrease in the corrosion rate of Mg-Li alloys in 0.1 M NaCl in the following order Mg-7.5Li > Mg-4Li > Mg-14Li. However, in the present contribution, a linear decrease in the corrosion resistance with increased Li content was observed in an order AZ31-4Li > AZ31-8Li > AZ31-12Li. This difference might be attributed to the additional presence of Al and Zn in the composition of the alloys leading to the differences in the composition of IMPs, variations in the heat treatment, and other structural parameters (grain size, IMPs size, etc.).