Inhibiting effects of some synthesized organic compound on the corrosion of St-3 in 0.1N H2SO4 solution |
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Authors: | H Ashassi-Sorkhabi TA Aliyev R Zareipoor |
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Affiliation: | a Electrochemistry Researches Laboratory, Center of Excellence for New Compounds and Clean Chemistry, University of Tabriz, Tabriz, Iran b Nakchivan State University, Republic of Azerbaijan |
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Abstract: | The inhibiting properties of two synthesized metals (alkyl)-2-hydroxy benzene sulfonate compounds have been studied on the corrosion of steel (St-3) in aerated 0.1N H2SO4 solutions by potentiodynamic polarization (dc) technique and electrochemical impedance spectroscopy (ac). The polarization curves indicate that the inhibitors are mixed-type. The impedance increases with inhibitors concentration. Low difference in inhibition efficiencies of two compounds for the corrosion of St-3 steel could be explained by high similarities of their structures. Results obtained by both electrochemical methods are in relatively good agreement. |
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Keywords: | Corrosion inhibition Metals (alkyl)-2-hydroxy benzene sulfonate Steel St-3 Tafel polarization EIS |
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