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Title: Eco-friendly benzimidazolium based ionic liquid as a corrosion inhibitor for aluminum alloy composite in acidic media
Authors: Kshama, Shetty, S.
Nityananda, Shetty, A.
Issue Date: 2017
Citation: Journal of Molecular Liquids, 2017, Vol.225, , pp.426-438
Abstract: A novel, relatively inexpensive ionic liquid, 1.3-bis[2-(4-methoxyphenyl)-2-oxoethyl]-1H benzimidazol-3-ium bromide (MOBB), was synthesized and characterized using FTIR, NMR, LC-MS and single crystal XRD (SCXRD) techniques. MOBB was evaluated for its corrosion inhibition properties on 6061 Al-15 vol% SiC (P) composite in 0.1 M HCl and 0.1 M H2SO4 media at different temperatures (30 50 C) by electrochemical impedance spectroscopy and potentiodynamic polarization methods. The adsorption of MOBB on the composite was predominantly through chemisorption, obeying Langmuir adsorption isotherm. Inhibition efficiencies of 98.7% in HCl and 98.8% in H2SO4 were obtained, MOBB acting as a mixed type of inhibitor with predominant cathodic control. 2016
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