Corrosion behaviour of galvanized steel and electroplating steel in aqueous solution: AC impedance study and XPS |
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Authors: | M Lebrini M Traisnel |
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Institution: | a Laboratoire des Procédés d’Elaboration des Revêtements Fonctionnels, LSPES UMR CNRS 8008, ENSCL, BP 90108, F-59652 Villeneuve d’Ascq Cedex, France b Unité de Catalyse et Chimie du solide UMR 8181 Bât C3, USTL, F-59655 Villeneuve d’Ascq Cedex, France c TOTAL France, Centre de Recherche de Solaize, Chemin du canal, BP 22, F-69360 Solaize, France |
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Abstract: | The efficiency of a new triazole derivative, namely, 2-{(2-hydroxyethyl)(4-methyl-1H-1,2,3-benzotriazol-1-yl)methyl]amino}ethanol (TTA) has been studied for corrosion inhibition of galvanized steel and electroplating steel in aqueous solution. Corrosion inhibition was studied using electrochemical impedance spectroscopy (EIS). These studies have shown that TTA was a very good inhibitor. Data obtained from EIS show a frequency distribution and therefore a modelling element with frequency dispersion behaviour, a constant phase element (CPE) has been used. The corrosion behaviour of galvanized steel and electroplating steel in aqueous solution was also investigated in the presence of 4-methyl-1H-benzotriazole (TTA unsubstituted) by EIS. These studies have shown that the ability of the molecule to adsorb on the steel surface was dependent on the group in triazole ring substituent. X-ray photoelectron spectroscopy surface analysis with TTA shows that it chemisorbed on surface of galvanized steel and electroplating steel. |
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Keywords: | Tolyltriazole Corrosion inhibitors Galvanized steel Electroplating steel Aqueous solution X-ray photoelectron spectroscopy |
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