Article ID Journal Published Year Pages File Type
1470623 Corrosion Science 2010 11 Pages PDF
Abstract

Three synthesized organic compounds were tested as corrosion inhibitors for mild steel in sulfuric acid medium by potentiostatic polarization, FTIR spectroscopy and SEM techniques. Quantum chemical parameters were also calculated to characterize adsorption mechanism. Acceptable correlations were obtained between inhibition efficiency and the calculated quantum chemical parameters. It was found that the investigated compounds exhibit a good inhibition effect especially at 8–10 ppm range concentration, which makes them commercially important. The adsorption of inhibitors on the surface obeys Langmuir adsorption isotherm. The values of activation energy and the thermodynamic parameters, such as Kads, ΔGads°, ΔHads° and ΔSads° were calculated.

Related Topics
Physical Sciences and Engineering Materials Science Ceramics and Composites
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