Journal of Advanced Materials and Technologies

Journal of Advanced Materials and Technologies

Electrochemical Study on the Effect of Schiff Base-Chromium Complex on Steel Corrosion in HCl Solution

Document Type : Research Note Article

Authors
Loghman Kord 1
Mojtaba Nasr Esfahani 2
Mahmoud Zendehdel 2
1 Department of Materials, Najafabad Branch, Islamic Azad University, Najaf Abad, Iran
2 Department of Chemistry, Najaf Abad Branch, Islamic Azad University, Najaf Abad, Iran
10.30501/jamt.2635.70285
Abstract
The inhibition effect of synthesized Schiff base-chromium Complex, namely Bis (N-(2,2- aminoethylamino) ethanol) salicylaldehyde) chromium (III) chloride on the corrosion of mild steel in 0.5 M HCl was investigated using potentiodynamic polarization and electrochemical impedance spectroscopy (EIS). The experimental results suggest that the complex is a good corrosion inhibitor at different concentrations and its adsorption was described by the Langmuir adsorption isotherm. The adsorption isotherm parameters such as and Kads were determined at room temperature. Polarization curves indicated that this Schiff base acts as a mixed (anodic) type inhibitor. Polarization results revealed that the inhibitor showing a maximum efficiency 79% at concentration of 100 ppm. The scanning electron micrographs (SEM) images showed significant effect of the inhibitor.
Keywords
Mild Steel
Corrosion Inhibitor
Schiff base
Cr Complex
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Journal of Advanced Materials and Technologies
Volume 3, Issue 4
Winter 2014
Pages 77-83

  • Receive Date 25 June 2014
  • Revise Date 09 September 2014
  • Accept Date 15 September 2014