European Journal of Chemistry 2014, 5(1), 53-64. doi:10.5155/eurjchem.5.1.53-64.899

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


Doddahosuru Mahadevappa Gurudatt (1) , Kikkeri Narasimha Shetty Mohana (2,*)

(1) Department of Studies in Chemistry, University of Mysore, Manasagangothri, Mysore 570 006, India
(2) Department of Studies in Chemistry, University of Mysore, Manasagangothri, Mysore 570 006, India
(*) Corresponding Author

Received: 27 Jul 2013, Accepted: 30 Aug 2013, Published: 31 Mar 2014

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.


Keywords


Inhibition; Mild steel; Weight loss; Polarization; Scanning electron microscopy; Electrochemical impedance spectroscopy

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DOI: 10.5155/eurjchem.5.1.53-64.899

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How to cite


Gurudatt, D.; Mohana, K. Eur. J. Chem. 2014, 5(1), 53-64. doi:10.5155/eurjchem.5.1.53-64.899
Gurudatt, D.; Mohana, K. Influence of some synthesized pyrimidine derivatives on corrosion inhibition of mild steel in hydrochloric acid medium. Eur. J. Chem. 2014, 5(1), 53-64. doi:10.5155/eurjchem.5.1.53-64.899
Gurudatt, D., & Mohana, K. (2014). Influence of some synthesized pyrimidine derivatives on corrosion inhibition of mild steel in hydrochloric acid medium. European Journal of Chemistry, 5(1), 53-64. doi:10.5155/eurjchem.5.1.53-64.899
Gurudatt, Doddahosuru, & Kikkeri Narasimha Shetty Mohana. "Influence of some synthesized pyrimidine derivatives on corrosion inhibition of mild steel in hydrochloric acid medium." European Journal of Chemistry [Online], 5.1 (2014): 53-64. Web. 22 Sep. 2019
Gurudatt, Doddahosuru, AND Mohana, Kikkeri. "Influence of some synthesized pyrimidine derivatives on corrosion inhibition of mild steel in hydrochloric acid medium" European Journal of Chemistry [Online], Volume 5 Number 1 (31 March 2014)

DOI Link: https://doi.org/10.5155/eurjchem.5.1.53-64.899

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