Corrosion behavior and adsorption thermodynamics of some Schiff bases on mild steel corrosion in industrial water medium

Shivakumar, S. S. and Mohana, K. N. (2013) Corrosion behavior and adsorption thermodynamics of some Schiff bases on mild steel corrosion in industrial water medium. International Journal of Corrosion, 2013. ISSN 0191-2917

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Official URL: http://doi.org/10.1155/2013/543204

Abstract

The inhibition performance and adsorption behavior of (E)-2-(3- nitrobenzylidene) hydrazine carbothioamide (SB1) and (E)-2-(4-(dimethylamino) benzylidene) hydrazine carbothioamide (SB2) on mild steel corrosion in industrial water medium have been investigated by gravimetric, potentiodynamic polarization and electrochemical impedance spectroscopy (EIS) techniques. The results revealed that inhibition efficiency depends on both the concentration of the inhibitors and temperature of the system. Increasing temperature reduces the inhibition efficiency of both inhibitors. Polarization studies indicated that these compounds behave as mixed type of inhibitors. The adsorption of both inhibitors was spontaneous and followed Langmuir adsorption isotherm. Thermodynamic parameters are calculated and discussed. The relation between inhibition efficiency and molecular structures of SB1 and SB2 was discussed by considering quantum chemical parameters. The surface adsorbed film was characterized by scanning electron microscopy (SEM).

Item Type: Article
Uncontrolled Keywords: Efficiency, Scanning electron microscopy, Functional groups, Quantum chemistry, Steel corrosion, Carbon steel, Inhibition efficiency, Langmuir adsorption isotherms, Thermodynamic parameter, Electrochemical impedance spectroscopy, Surface adsorbed films, Adsorption thermodynamics, Hydrazine, Increasing temperatures, Inhibition performance, Quantum chemical parameters
Subjects: C Chemical Science > Chemistry
Divisions: Department of > Chemistry
Depositing User: Arshiya Kousar Library Assistant
Date Deposited: 10 Dec 2019 07:41
Last Modified: 10 Dec 2019 07:41
URI: http://eprints.uni-mysore.ac.in/id/eprint/9539

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