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Corrosion inhibition of magnesium alloy AZ31 in chloride-containing solutions by aqueous permanganate |
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| Authors: | Osipenko Maria A. Kasach Aliaksandr A. Adamiec Janusz Zimowska Małgorzata Kurilo Irina I. Kharytonau Dzmitry S. |
| Affiliation: | 1.Department of Physical, Colloid, and Analytical Chemistry, Belarusian State Technological University, Minsk, 220006, Belarus ;2.Department of Chemistry, Electrochemical Production Technology, and Materials for Electronic Equipment, Belarusian State Technological University, Minsk, 220006, Belarus ;3.Institute of Materials Science, Silesian University of Technology, Katowice, PL, 40-019, Poland ;4.Jerzy Haber Institute of Catalysis and Surface Chemistry, Polish Academy of Sciences, Krakow, PL, 30-239, Poland ; |
| Abstract: | In this work, corrosion of the AZ31 magnesium alloy was examined in 0.05 M NaCl solutions containing 0.01–0.150 mol/dm3 of potassium permanganate as a corrosion inhibitor. A set of electrochemical impedance spectroscopy, linear sweep voltammetry, and hydrogen evolution measurements revealed high inhibitor effectiveness at relatively high (0.150 mol/dm3) KMnO4 concentrations. Based on data of energy-dispersive X-ray analysis, scanning electron microscopy, and Raman spectroscopy, a mechanism of the corrosion inhibition of AZ31 alloy by potassium permanganate in chloride-containing media was proposed. |
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