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

Y.M. Yan, A. Maltseva, P. Zhou, X.J. Li, Z. R. Zeng, O. Gharbi, K. Ogle, M. La Haye, M. Vaudescal, M. Esmaily, N. Birbilis, P. Volovitch

Research output: Contribution to journalArticleResearchpeer-review

14 Citations (Scopus)


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·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+.

Original languageEnglish
Article number108342
Number of pages13
JournalCorrosion Science
Publication statusPublished - Mar 2020


  • A. Magnesium
  • B. AES (Auger spectroscopy)
  • B. ICP-OES
  • B. In-situ Raman spectroscopy
  • C. Interfaces
  • C. Neutral inhibition

Cite this