Author/Authors :
HÜR, Evrim Eskişehir Osmangazi University - Faculty of Arts and Science - Department of Chemistry, TURKEY , ARSLAN, Andaç Eskişehir Osmangazi University - Faculty of Arts and Science - Department of Chemistry, Turkey , SAKARYA, Handan Eskişehir Osmangazi University - Faculty of Arts and Science - Department of Chemistry, Turkey , HÜR, Deniz Anadolu University - Faculty of Science, Plant, Drug and Scientific Researches Center (AUBİBAM) - Department of Chemistry, Turkey
Abstract :
This study examines usage of benzotriazole (Bt) and N-mesyl benzotriazole (BtSO2CH3) for improvement of corrosion resistance of low carbon steel (LCS) in 0.1 M sulfuric acid (H2SO4). The inhibitor effect of Bt and BtSO2CH3 on the corrosion behavior of LCS was studied using electrochemical impedance spectroscopy (EIS), potentiodynamic polarization curves and polarization resistance techniques. Under investigated experimental conditions these compounds showed a good corrosion inhibition. The inhibition efficiency of BtSO2CH3 was more than that of Bt. The potentiodynamic polarization curves indicated that compounds are mixed type inhibitors. The inhibiting properties of compounds were found to depend on the concentration. The adsorption mechanism of compounds was investigated using different adsorption isotherms. The equilibrium constants and free energies of adsorption using the adsorption isotherms were calculated.
NaturalLanguageKeyword :
Benzotriazole , Corrosion , Inhibitor , Carbon steel.
