Corrosion behavior of mild steel in H2SO4 solution with 1, 4-di [1′-methylene-3′-methyl imidazolium bromide]-benzene as an ionic liquid. (June 2016)

• Record Type: Journal Article
• Authors: Pourghasemi Hanza, A.; Naderi, R.; Kowsari, E.; Sayebani, M.
• Is Part Of: Corrosion science. Volume 107(2016)
• Page Start: 96
• Page End: 106
• Publication Date: 2016-06
• Subjects: A. Mild steel -- B. AFM -- B. EIS -- B. Polarization -- C. Acid corrosion; Corrosion and anti-corrosives -- Periodicals; 620.11223
• DOI: 10.1016/j.corsci.2016.02.023
• Languages: English
• ISSNs: 0010-938X

Abstract

Highlights: 1, 4-di[1′-methylene-3′-methyl imidazolium bromide]-benzene ionic liquid is synthesized. The ionic liquid is introduced as corrosion inhibitor for mild steel in 1.0 M H2 SO4 . Effect of ionic liquid content on mild steel corrosion is electrochemically studied. The inhibition mechanism is studied using SEM/EDX and AFM surface analysis. Adsorption isotherm of the ionic liquid is determined using EIS and polarization data. Abstract: The corrosion inhibition effectiveness of 1, 4-di [1′-methylene-3′-methyl imidazolium bromide]- benzene as an ionic liquid on mild steel in 1 M H2 SO4 was confirmed using electrochemical methods and surface analysis. The data obtained from EIS and polarization curves indicated the inhibition efficiency is in direct ratio to the inhibitor concentration. Through taking advantage of SEM/EDX and AFM, less corrosion damage was connected to the surface adsorption of the ionic liquid molecules. According to the data extracted from the Langmuir adsorption isotherm, a physisorption mechanism was indicated. Moreover, the EIS data showed the time dependence of inhibition, confirmed by EDX.