Some thiazolodine-5-one derivatives as corrosion inhibitors for carbon steel in 2M HCl solutions
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The inhibitory action of five thiazolodine-5-one derivatives on the corrosion of carbon steel in 2 M HCl at different concentrations has been investigated at 25oC by weight loss, galvanostatic polarization and electrochemical impedance spectroscopy (EIS) methods. Polarization results showed that these compounds act as mixed-type inhibitors. Adsorption of these compounds on carbon steel surface in 2 M HCl followed Langmuir isotherm model. A physical adsorption phenomenon is proposed. Addition of I- ions to the solution containing thiazolodin-5-One derivatives increases the inhibition efficiency of the system by synergistic effect. Electrochemical impedance spectroscopy (EIS) suggested the formation of a protective layer on the steel surface by the adsorption of inhibitor molecules and chloride ions.
[A. A. Keshk, A. S. Fouda (2014); Some thiazolodine-5-one derivatives as corrosion inhibitors for carbon steel in 2M HCl solutions Int. J. of Adv. Res. 2 (Mar). 0] (ISSN 2320-5407). www.journalijar.com
