The investigation of synergistic inhibition effect of rhodanine and iodide ion on the corrosion of copper in sulphuric acid solution |
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Authors: | Ramazan Solmaz,Ece Altunba? ?ahin,Ali Dö ner,Gü lfeza Karda? |
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Affiliation: | aBingöl University, Science and Letters Faculty, Chemistry Department, 12000 Bingöl, Turkey;bÇukurova University, Science and Letters Faculty, Chemistry Department, 01330 Balcali, Adana, Turkey |
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Abstract: | The synergistic inhibition effect of rhodanine (Rdn) and iodide ion on the corrosion of copper in 0.5 M H2SO4 solution was studied using electrochemical techniques. The surface morphologies of the substrates were examined by scanning electron microscopy (SEM). Elemental analysis of electrode surface exposed to test solution was determined by energy dispersive X-ray spectroscopy (EDX). It was found that Rdn provided satisfactory inhibition on the corrosion of copper. Moreover, its inhibition efficiency further increased in the presence of iodide ions due to synergistic effect. Finally, a mechanism of inhibition is proposed and discussed. |
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Keywords: | A. Copper B. EIS B. Polarization B. SEM C. Acid corrosion C. Acid inhibition |
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