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Copper Corrosion Inhibition using BTAH Inhibitor in Sodium Chloride Medium: Experimental and Theoretical Studies
| 1 | Laghouat University, ALGERIA |
CORRESPONDING AUTHOR
Karima Toumiat
Department of Materials Sciences & Physical Chemistry Laboratory Materials, Laghouat University, Algeria
Department of Materials Sciences & Physical Chemistry Laboratory Materials, Laghouat University, Algeria
Online publication date: 2016-12-23
Publication date: 2016-12-23
Eurasian J Anal Chem 2017;12(3):275–294
KEYWORDS
TOPICS
Spectroscopic techniquesElectrochemistryInstrumentationSampling and sample preparationMethod validation
ABSTRACT
The effect of 1H-benzotriazole (BTAH) with ppm (part per million) grade concentrations on copper corrosion in aerated 0.5 M NaCl solution is studied using chemical method (weight loss) and electrochemical methods (Potentiodynamic Polarization and Electrochemical Impedance Spectroscopy (EIS)). The present study confirm that the BTAH acts as a mixed-type inhibitor of copper corrosion in 0.5 M NaCl. The optimum inhibition efficiency is at 30 ppm of BTAH. The surface characterization performed using Scanning Electron Microscopy (SEM) to confirm the adsorption of the inhibitor molecules after 21 days of immersion time in aerated 0.5 M NaCl. The results obtained from different techniques used in this research are in very good agreement and revealed that the BTAH is a very good inhibitor of copper corrosion in sodium chloride medium. Computer Simulation techniques confirm that the BTAH molecules adsorbed on the Cu (111) Surface.
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