Inhibition Efficiency of Benzidine for Mild Steel in Acidic Media

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dc.contributor.authorOzkir, Demet
dc.contributor.authorBayol, Emel
dc.date.accessioned2019-08-01T13:38:39Z
dc.date.available2019-08-01T13:38:39Z
dc.date.issued2011
dc.departmentNiğde ÖHÜ
dc.description.abstractIn this study, the inhibition effect of different concentrations of benzidine possessing amine groups in its structure on the corrosion behavior of mild steel (MS) in 1.0 M HCl solution at 293 K temperature was practiced in both short and long immersion times by measuring electrochemical impedance spectroscopy (EIS), hydrogen evolution (V(H2)-t) and change of open circuit potential (E(ocp)-t). For short-term tests, potentiodynamic polarization and linear polarization resistance (R(lp)) were also studied. Polarization data indicate that this compound act as mixed-type inhibitor for mild steel in 1.0 M HCl. With regard to the results cited, it was identified that the increase in the inhibitor efficiencies with concentration was emanated from the adsorption of benzidine molecules on the electrode surface. Pertinent to this adsorption, it followed Langmuir isotherm. Adsorption equilibrium constant and adsorption free energy were determined. The effect of temperature on the corrosion behaviour in the absence of any inhibitor and in the presence of 75 mM benzidine was studied in the range of 293 323 K. Activation energies (E(a)*) were calculated from the obtained corrosion rates at different temperatures. Furthermore, in order to identify the adsorption mechanism of the inhibitor on the metal surface, the zero-charge potential (PZC) was determined by EIS measurement technique. Surface morphology of mild steel electrodes were emerged by means of the scanning electron microscope. DOI: 10.1134/S2070205111040150
dc.identifier.doi10.1134/S2070205111040150
dc.identifier.endpage527
dc.identifier.issn2070-2051
dc.identifier.issue4
dc.identifier.scopus2-s2.0-80054975984
dc.identifier.scopusqualityQ2
dc.identifier.startpage517
dc.identifier.urihttps://dx.doi.org/10.1134/S2070205111040150
dc.identifier.urihttps://hdl.handle.net/11480/4708
dc.identifier.volume47
dc.identifier.wosWOS:000297350900014
dc.identifier.wosqualityQ3
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.institutionauthor[0-Belirlenecek]
dc.language.isoen
dc.publisherMAIK NAUKA/INTERPERIODICA/SPRINGER
dc.relation.ispartofPROTECTION OF METALS AND PHYSICAL CHEMISTRY OF SURFACES
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.titleInhibition Efficiency of Benzidine for Mild Steel in Acidic Media
dc.typeArticle

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