On the in-situ aqueous stability of an Mg-Li-(Al-Y-Zr) alloy: Role of Li

By Yan, Y. M.; Maltseva, A.; Zhou, P.; Li, X. J.; Zeng, Z. R.; Gharbi, O.; Ogle, K.; Haye, M. La; Vaudescal, M.; Esmaily, M.; Birbilis, N.; Volovitch, P.
Published in Corrosion Science 2019

Abstract

The 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

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