%0 journal article
%@ 0257-8972
%A Dou, Z.,Zhang, Y.,Shulha, T.,Cui, R.,Serdechnova, M.,Tian, H.,Yan, T.,Blawert, C.,Li, L.,Zheludkevich, M.L.,Chen, F.

%D 2022
%J Surface and Coatings Technology
%N 
%P 128414 
%R doi:10.1016/j.surfcoat.2022.128414
%T Insight into chelating agent stimulated in-situ growth of MgAl-LDH films on magnesium alloy AZ31: The effect of initial cationic concentrations
%U https://doi.org/10.1016/j.surfcoat.2022.128414
 
%X A strategy based on chelating agent addition was used to assist the in-situ growth of MgAl-layered double hydroxides (LDHs) films on magnesium alloy AZ31 in a relatively mild condition. The growth behavior of MgAl-LDH films was studied on the magnesium alloy AZ31 substrate as the sole source of Al3+ and/or adding aluminum compounds as a supplementary source of respective ions. The composition, structure, corrosion resistance, and formation mechanism of LDH films were investigated and discussed. Results showed that the LDH-coated samples could effectively retard the corrosion of magnesium alloy. A thicker Mg (OH)2/MgAl-LDH composite film with larger flake size was formed without additional aluminum source. MgAl-LDH film fabricated with moderate additional Al3+ concentrations showed better corrosion resistance and an interesting stable network structure on a flat surface both covered/consisting of very fine LDH flakes.