It is shown that xanthan gum inhibits corrosion processes in carbon steel placed in chloride-containing media by the mechanism of adsorption. Potassium-sodium tartrate improves the protective efficiency of xanthan gum. The results of electrochemical impedance spectroscopy confirm the formation of protective barrier layer on steel in a medium inhibited by the composition of gum with tartrate. The Langmuir adsorption isotherm corresponds to the most studied inhibitory system. The degree of protection of carbon steel by the inhibitory composition based on gum and tartrate exceeds 90%. The elevation of corrosion resistance of the metal in the medium inhibited by this composition is confirmed by the results of optical microscopy.
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Translated from Fizyko-Khimichna Mekhanika Materialiv, Vol. 56, No. 5, pp. 23–27, September–October, 2020.
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Korniy, S.А., Zin, I.М., Тymus, M.B. et al. Corrosion Protection of Carbon Steel by a Composition Based on Natural Polysaccharide. Mater Sci 56, 602–607 (2021). https://doi.org/10.1007/s11003-021-00470-0
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DOI: https://doi.org/10.1007/s11003-021-00470-0