Inhibitive Effect of 2-[4-(Dimethylamino) Benzylidene] Hydrazinecarbothioamide on Corrosion of Mild Steel in Acidic Solution


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The inhibition efficiency and adsorption of 2-[4-(dimethylamino) benzylidene] hydrazinecarbothioamide (DABHC) on the corrosion behaviour of mild steel in 0.5M H3PO4 and H2SO4 solutions has been studied in the temperature range (30–50°C) using potentiodynamic polarization (PDP) and electrochemical impedance spectroscopy (EIS) techniques. The inhibition effectiveness of DABHC increases with increase in its concentration and decreases with increase in temperature. The results indicate that DABHC functions as a mixed type inhibitor and followed Langmuir’s adsorption isotherm. The corrosion inhibition of DABHC takes place through physisorption. The surface of the specimen was analysed using scanning electron microscope (SEM) and atomic force microscopy (AFM).

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Prithvi

Department of Chemistry, Manipal Institute of Technology, Manipal Academy of Higher Education

Email: suma.rao@manipal.edu
印度, Manipal, 576104

Preethi Kumari

Department of Chemistry, Manipal Institute of Technology, Manipal Academy of Higher Education

Email: suma.rao@manipal.edu
印度, Manipal, 576104

Suma Rao

Department of Chemistry, Manipal Institute of Technology, Manipal Academy of Higher Education

编辑信件的主要联系方式.
Email: suma.rao@manipal.edu
印度, Manipal, 576104

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