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ISSN (PRINT): 0974-7486

Abstrakt

Effect of Naphthalene-1-Yl-Thiophene-2-Ylmethylene-Amine on the Corrosion Inhibition of Magnesium Alloys

S. Thirugnanaselvi and S. Kuttirani


The inhibition effect of a Schiff base compound naphthalene-1-yl-thiophene-2-ylmethyleneamine (NT) with nitrogen and sulphur donors on AZ31 magnesium alloy corrosion was studied using weight loss method, potentiodynamic polarization and EIS (Electrochemical impedance spectroscopy). The surface characterization and its spectral analysis were exhibited using scanning electron microscopy. The results of electrochemical measurements were in good agreement with surface characterization results. It was also found that this inhibitor mainly acts through physical adsorption on the metal surface due to the presence of heteroatomic donors. Also, adsorption obeys the Freundlich isotherm. EDS spectra revealed that the existence of inhibitive layer was enriched with sulphate.


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