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Inhibition effect of aminotriazole derivative on the corrosion of Cu-40Zn alloy in 3%NaCl solution in presence of Sulphide ions | Abstract

Der Pharma Chemica
Journal for Medicinal Chemistry, Pharmaceutical Chemistry, Pharmaceutical Sciences and Computational Chemistry

ISSN: 0975-413X

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Abstract

Inhibition effect of aminotriazole derivative on the corrosion of Cu-40Zn alloy in 3%NaCl solution in presence of Sulphide ions

Author(s): Benmessaoud M, Serghini Idrissi M, Labjar N, Rhattas K, Damej M, Hajjaji N, Srhiri A and El Hajjaji S

The effect of synthesis N-decyl-3-amino-1,2,4-triazole noted (TN10) on the corrosion behavior of copper-zinc 60 - 40 (Brass) in NaCl 3% solution has been investigated at 298 K in presence and in absence of sulphide ions using weight loss measurements, potentiodynamic polarization, impedance spectroscopy (EIS) methods and surface characterization. Polarization measurements showed that the organic compound investigated act as mixed type inhibitor retarding both anodic and cathodic reaction. The impedance results show a change on the corrosion mechanism of brass in the presence of inhibitor. Appropriate electric equivalent circuit model was used to calculate the impedance parameters. Changes in the impedance parameters are related to the adsorption of organic inhibitor on the metal surface, leading to the formation of protective film. This film depends on the immersion time. Inhibition efficiencies obtained from different studied methods are in good agreement. Inhibition efficiency up to 95% can be obtained at 0.5 mM of inhibitor and after 60 min of immersion time.


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