Inhibition of Corrosion of Carbon Steel in 0.5 M HCl Solutions by Some Pyridoprymidine Derivatives
Fouda, A., Diab, M., El-Bindary, A., Bakr, A. (2012). Inhibition of Corrosion of Carbon Steel in 0.5 M HCl Solutions by Some Pyridoprymidine Derivatives. EKB Journal Management System, 1(1), 19-31. doi: 10.21608/sjdfs.2012.194252
A.S. Fouda; M Diab; A. El-Bindary; A Bakr. "Inhibition of Corrosion of Carbon Steel in 0.5 M HCl Solutions by Some Pyridoprymidine Derivatives". EKB Journal Management System, 1, 1, 2012, 19-31. doi: 10.21608/sjdfs.2012.194252
Fouda, A., Diab, M., El-Bindary, A., Bakr, A. (2012). 'Inhibition of Corrosion of Carbon Steel in 0.5 M HCl Solutions by Some Pyridoprymidine Derivatives', EKB Journal Management System, 1(1), pp. 19-31. doi: 10.21608/sjdfs.2012.194252
Fouda, A., Diab, M., El-Bindary, A., Bakr, A. Inhibition of Corrosion of Carbon Steel in 0.5 M HCl Solutions by Some Pyridoprymidine Derivatives. EKB Journal Management System, 2012; 1(1): 19-31. doi: 10.21608/sjdfs.2012.194252

Inhibition of Corrosion of Carbon Steel in 0.5 M HCl Solutions by Some Pyridoprymidine Derivatives

Scientific Journal for Damietta Faculty of Science
Article 3, Volume 1, Issue 1, December 2012, Page 19-31  XML PDF (1.02 MB)
Document Type: Original articles
DOI: 10.21608/sjdfs.2012.194252
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Authors
A.S. Fouda email 1; M Diab2; A. El-Bindary2; A Bakr3
1Department of Chemistry, Faculty of Science, El-Mansoura University, El-Mansoura, 35516, Egypt
2Department of Chemistry, Faculty of Science, Damietta University, Egypt
3Department of Chemistry, Faculty of Science, Mansoura University, Egypt
Abstract
The influence of some Pyridoprymidine derivatives on the corrosion of carbon steel in 0.5 M HCl was investigated using weight loss, potentiodynamic polarization, electrochemical impedance spectroscopy (EIS) and electrochemical frequency modulation (EFM) techniques. The inhibition efficiency increases with increasing the inhibitor concentration, but decreases with increasing the temperature. The inhibitors were adsorbed on the carbon steel surface following Temkin’s adsorption isotherm. The electrochemical results indicated that all the investigated compounds act as mixed-type inhibitors. Some thermodynamic parameters for corrosion and adsorption processes were determined and discussed. The mechanism of inhibition process was discussed in the light of the chemical structure and quantum-chemical calculations of the investigated inhibitors.
Keywords
corrosion inhibition; carbon steel; EIS; EFM; HCl; pyridoprymidine derivative
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