Yan, YuanmingMaltseva, A.Zhou, PengLi, X.J.Zeng, ZhuoranGharbi, OumaimaOgle, KevinLa Haye, M.Vaudescal, M.Esmaily, MohsenBirbilis, NickVolovitch, Polina2023-03-200010-938Xhttp://hdl.handle.net/1885/287216The aqueous stability of a corrosion resistant Mg-Li(-Al-Y-Zr)-alloy was investigated by combining in-situ confocal Raman Microscopy, Atomic Emission SpectroElectroChemistry, ex-situ Photoluminiscence Spectroscopy, Auger Electron Spectroscopy and Glow Discharge Optical Emission Spectroscopy. Li and Mg dissolved from visually intact anodic areas, leaving a Li-depleted metallic layer under approximately 100 nm thick Li-doped MgO. The transformation MgO→Mg(OH)2 was inhibited. Li2[Al2(OH)6]2·CO3·nH2O, LiAlO2, Y2O3 and Mg(OH)2 accumulated locally around active cathodic sites. New corrosion mechanism is proposed, which associates the improved corrosion resistance of Mg-Li alloys with an enhanced chemical stability and modified catalytic activity of MgO in presence of Li+.The authors acknowledge the Embassy of France in Australia for the Nicolas Baudin travel grant of Y. Yanapplication/pdfen-AU© 2019 Elsevier Ltd.A. MagnesiumB. In-situ Raman spectroscopyB. ICP-OESB. AES (Auger spectroscopy)C. InterfacesC. Neutral inhibition202010.1016/j.corsci.2019.1083422022-01-09