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Open AccessArticle

Corrosion Inhibition of Cast Iron in Arabian Gulf Seawater by Two Different Ionic Liquids

Deanship of Scientific Research (DSR), Center of Excellence for Research in Engineering Materials (CEREM), Advanced Manufacturing Institute (AMI), King Saud University, P.O. Box 800, Al-Riyadh 11421, Saudi Arabia
Electrochemistry and Corrosion Laboratory, Physical Chemistry Department, National Research Centre, El Bohouth St. 33, Dokki, Giza 12622, Egypt
Mechanical Design and Materials Department, Faculty of Energy Engineering, Aswan University, Aswan 81521, Egypt
Institute of Electrochemistry, Clausthal University of Technology, Arnold-Sommerfeld-Str. 6, Clausthal-Zellerfeld D-38678, Germany
Authors to whom correspondence should be addressed.
Academic Editor: Peter J. Uggowitzer
Materials 2015, 8(7), 3883-3895;
Received: 13 May 2015 / Revised: 8 June 2015 / Accepted: 12 June 2015 / Published: 26 June 2015
In this paper we report on the corrosion inhibition of cast iron in Arabian Gulf seawater by two different ionic liquids namely, 1-ethyl-3-methylimidazolium chloride ([EMIm]Cl) and 1-butyl-1-methylpyrrolidinium chloride ([Py1,4]Cl). The inhibiting influence of the employed ionic liquids was investigated by weight loss, open circuit potential electrochemical impedance spectroscopy, and cyclic potentiodynamic polarization. The results show the corrosion inhibition impact of the employed ionic liquids (ILs). Compared with [Py1,4]Cl, [EMIm]Cl shows a higher inhibition efficiency at a short immersion time, for the examined ILs concentrations. However, [Py1,4]Cl exhibits a higher efficiency upon increasing the immersion time indicating the persistence of the inhibiting influence. The corrosion inhibition of the employed ionic liquids is attributed to the adsorption of the cations of the ionic liquids onto the surface of cast iron forming a corrosion barrier. View Full-Text
Keywords: corrosion; inhibitors; ionic liquids; cast iron; seawater; weight-loss corrosion; inhibitors; ionic liquids; cast iron; seawater; weight-loss
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Sherif, E.-S.M.; Abdo, H.S.; Abedin, S.Z.E. Corrosion Inhibition of Cast Iron in Arabian Gulf Seawater by Two Different Ionic Liquids. Materials 2015, 8, 3883-3895.

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