%0 journal article
%@ 0010-938X
%A Song, C., Wang, C., Mercier, D., Vaghenfinazari, B., Seyeux, A., Snihirova, D., Wieland, F.D.C., Marcus, P., Zheludkevich, M.L., Lamaka, S.V.

%D 2024
%J Corrosion Science

%P 111867 
%R doi:10.1016/j.corsci.2024.111867
%T Corrosion inhibition mechanism of 2,6-pyridinedicarboxylate depending on magnesium surface treatment
%U https://doi.org/10.1016/j.corsci.2024.111867
 
%X 2,6-pyridinedicarboxylate (2,6-PDC) was studied as corrosion inhibitor for pure magnesium. The surface was prepared either by polishing or polishing followed by treatment with 1 M NaOH solution. The results show that 2,6-PDC promotes the formation of a denser protective oxide/hydroxide layer poor in PDC. The mechanism proposed includes forming weak PDC-Mg complexes that lower the free Mg2+ concentration available for the formation of Mg(OH)2. This leads to growth of smaller Mg(OH)2 platelets that are more densely packed and hence form a more protective layer. The highest inhibition efficiency of 2,6-PDC was achieved for samples with surface hydroxylated by NaOH treatment.