European Journal of Chemistry

Influence of some synthesized pyrimidine derivatives on corrosion inhibition of mild steel in hydrochloric acid medium

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Published: Mar 31, 2014
DOI: https://doi.org/10.5155/eurjchem.5.1.53-64.899
Keywords:
Inhibition, Mild steel, Weight loss, Polarization, Scanning electron microscopy, Electrochemical impedance spectroscopy
Section
Research Article
Issue
Vol. 5 No. 1 (2014): March 2014
Dates
Received 2013-07-27
Accepted 2013-08-30
Published 2014-03-31


Main Article Content

Doddahosuru Mahadevappa Gurudatt
Department of Studies in Chemistry, University of Mysore, Manasagangothri, Mysore 570 006, India
Kikkeri Narasimha Shetty Mohana
Department of Studies in Chemistry, University of Mysore, Manasagangothri, Mysore 570 006, India

Abstract

The influence of four newly synthesized pyrimidine derivatives on the corrosion inhibition of mild steel in 0.5 M HCl solution is studied using mass loss and electrochemical techniques. The corrosion rate was found to depend on concentration and temperature of the medium. Adsorption of all the four inhibitors obeys Langmuir isotherm model. Polarization curves indicated that the studied inhibitors are of mixed type. Electrochemical impedance spectroscopy explains the mechanism of inhibitor’s action. Various activation and adsorption thermodynamic parameters were calculated and discussed. The results obtained from weight loss and electrochemical studies are in good agreement with each other. The variation in inhibitive efficiency mainly depends on the type and nature of the substituents present in the inhibitor molecule.


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Gurudatt, D. M.; Mohana, K. N. S. Influence of Some Synthesized Pyrimidine Derivatives on Corrosion Inhibition of Mild Steel in Hydrochloric Acid Medium. Eur. J. Chem. 2014, 5, 53-64.

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