Title of article :
Electrochemical Measurements for the Corrosion Inhibition of Mild Steel in 0.5 M HCl Using Poly (epichlorohydrin) Derivatives
Author/Authors :
Noorollahy Bastam ، Naser Department of Chemistry - College of Science - Malek-Ashtar University of Technology , Hafizi- Atabak ، Hamid Reza Chemistry Chemical Engineering Research Center of Iran , Atabaki ، Fariborz Department of Chemistry - College of Science - Malek-Ashtar University of Technology , Radvar ، Mehran Department of Chemistry - College of Science - Malek-Ashtar University of Technology , Jahangiri ، Shahrzad Department of Chemistry - College of Science - Malek-Ashtar University of Technology
Abstract :
In this article, the inhibition capability of poly (epichlorohydrin) containing phenylhydrazine(PMP), 4-nitrophenylhydrazine(PMN), and 2,4- dinitrophenylhydrazine(PMDN) on mild steel was investigated in 0.5 M hydrochloric acid. The electrochemical studies demonstrate that these polymers act as mixed-type inhibitors but increasing their concentration caused the shift of corrosion potential to cathodic potential. Also, adsorption of these polymers on the mild steel surface obeys a Langmuir adsorption isotherm. The results obtained from the potentiodynamic polarization and Electrochemical Impedance Spectroscopy (EIS) are confirmed by Field Emission Scanning Electron Microscopy (FE-SEM), X-ray Energy Dispersive Spectroscopy (EDS), and Mapping analysis (MAP). The results of this study indicate that samples of PMDN have the lowest corrosion speed.
Keywords :
Mild steel , Electrochemical impedance , Poly (epichlorohydrin), phenylhydrazine , 4 , nitrophenylhydrazine and 2,4 , dinitrophenylhydrazine
Journal title :
Iranian Journal of Chemistry and Chemical Engineering (IJCCE)
Journal title :
Iranian Journal of Chemistry and Chemical Engineering (IJCCE)
