Document Type : Regular Article

Authors

Electrochemistry Research Laboratory, Department of Physical Chemistry, Faculty of Chemistry, University of Tabriz, Tabriz, Iran

10.22036/pcr.2023.407143.2376

Abstract

Before being used in a variety of sectors, steel is often cleaned using acidic solutions. The steel corrosion rises as a result of this treatment, necessitating the inclusion of inhibitors in the cleaning bath. Due to this, it is constantly crucial to provide new, effective corrosion inhibitors. Rivaroxaban was investigated in the current study as a mild steel corrosion inhibitor in a 1.0 M HCl solution. At 25, 30, 40, and 50 ˚C temperatures and 1, 10, 20, 30, and 40 µM concentrations of inhibitor, corrosion experiments were conducted using potentiodynamic polarisation and electrochemical impedance spectroscopy (EIS). Steel sheets' surfaces were analyzed using SEM images in both the absence and presence of the inhibitor. At an ideal concentration of 40 µM, Rivaroxaban demonstrated inhibition efficiency greater than 92%, which was reduced with an increase in temperature and time of immersion in the acidic solution. Charge transfer resistance in the presence of Rivaroxaban after 144h decreased from 1470 to 231 Ω cm2.

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