CORROSION INHIBITION OF STAINLESS AND MILD STEEL BY IMIDAZOLIUM-BASED COMPOUNDS IN ACIDS

1 LANGOVÁ Šárka
Co-authors:
1 MARKOVÁ Kristýna 1 PÁNEK Petr 1 VÁŇOVÁ Petra
Institution:
1 VŠB – Technical University of Ostrava, 17. listopadu 15/2172, Ostrava 708 33, Czech Republic, EU, sarka.langova@vsb.cz
Conference:
27th International Conference on Metallurgy and Materials, Hotel Voronez I, Brno, Czech Republic, EU, May 23rd - 25th 2018
Proceedings:
Proceedings 27th International Conference on Metallurgy and Materials
Pages:
965-971
ISBN:
978-80-87294-84-0
ISSN:
2694-9296
Published:
24th October 2018
Proceedings of the conference were published in Web of Science and Scopus.
Metrics:
14 views / 3 downloads
Abstract

Inhibition of stainless and mild steel corrosion in 1 M HCl solution by 1-octyl-3-methylimidazolium bromide and 1-dodecyl-3-methylimidazolium bromide was investigated using electrochemical and weight loss methods. The qualitative surface analysis was carried out. The studied compounds showed appreciable inhibition efficiencies. Polarization measurements proved that they are mixed-type inhibitors with predominantly anodic action. The inhibition efficiency for mild steel is higher comparing with AISI 304 stainless steel. The Gibbs energy of adsorption was calculated by means of the Langmuir isotherm.

Keywords: Imidazolium-based compounds; corrosion inhibition; polarization curve; electrochemical impedance spectroscopy; stainless steel
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