authors |
Maltseva, A; Lamaka, SV; Yasakau, KA; Mei, D; Kurchavov, D; Zheludkevich, ML; Lefevre, G; Volovitch, P |
nationality |
International |
journal |
CORROSION SCIENCE |
author keywords |
Mg; In situ Raman spectroscopy; Glow discharge optical emission spectroscopy; ATR-FTIR; Organic inhibitors; Surface film |
keywords |
RELATIVE INTENSITY CHANGES; COORDINATION POLYMERS; MAGNESIUM ALLOY; POSITIONAL FLUCTUATION; SALICYLATE INTERACTION; FREQUENCY-SHIFT; ANODE MATERIALS; MILD-STEEL; INHIBITION; ACIDS |
abstract |
Mechanisms of inhibition of Mg aqueous corrosion in presence of chloride by sodium salicylate (Sal), 2,5-pyridinedicarboxylate (PDC) and fumarate (Fum) were studied by in situ Raman spectroscopy, ATR-FTIR, GD-OES and hydrogen collection. In situ detected surface films were composed by Mg(OH)(2) nano-crystals and included inhibitors. All carboxylates significantly modified Mg(OH)(2) growth kinetics as well as pevented chloride incorporation in the film. Vibrational spectra of the surface films demonstrated specific interactions between the carboxylates and the surface: adsorption of Sal and Fum on the oxide/hydroxide, precipitation of coordination polymer by PDC, dissolution of iron inclusions via formation of iron-Sal soluble complexes. |
publisher |
PERGAMON-ELSEVIER SCIENCE LTD |
issn |
0010-938X |
isbn |
1879-0496 |
year published |
2020 |
volume |
171 |
digital object identifier (doi) |
10.1016/j.corsci.2020.108484 |
web of science category |
Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering |
subject category |
Materials Science; Metallurgy & Metallurgical Engineering |
unique article identifier |
WOS:000537624600004
|