The presence of surface carbonates was confirmed by Raman (Fig. ) and С 1s XPS spectra (not shown). The Pilling-Bedworth ratio of Mg(OH)2, MgCO3, LiOH, and Li2CO3 compounds is between 1.26-2.04 , indicating that corrosion resistance of the formed layers would be higher relative to the metallic substrate. Nevertheless, the protective ability of the formed surface layers is not enough, and corrosion attack increased after 24 h of exposure to 0.05 M NaCl solution under the influence of aggressive chloride ions.