The inhibitive effect of ethanolamine on corrosion behavior of aluminium in NaCl solution saturated with CO2
Abstract
In this study, the inhibitive effect of ethanolamine on corrosion behavior of aluminium was investigated in 3 wt. % NaCl solution, saturated with CO2. All the experiments were carried out at 20°C. Ethanolamine was added at different concentrations between 1 mM and 8 mM. In order to determine the corrosion inhibition efficiency of investigated inhibitor and the optimal concentration of inhibitor that provides the lowest corrosion of aluminium, the open circuit potential (OCP), electrochemical impedance spectroscopy (EIS), linear sweep voltametry (LSV) measurements, weight loss measurements as well as scanning electron microscopy technique (SEM) were performed. The electrochemical study and weight loss measurements indicated that the minimum corrosion rate and maximum inhibition efficiency was detected for concentration of 5 mM of ethanolamine, as well as the ethanolamine did not change the mechanism of aluminium dissolution. The adsorption of ethanolamine was found to obey Frumkin adsor...ption isotherm at concentrations up to 5 mM, but further increase in concentration was found to deviate from Frumkin adsorption isotherm. The calculated value for interaction parameter a indicates attractive lateral interactions in the adsorbed inhibitor layer. The obtained value of standard free energy of adsorption, ΔGads θ, confirms that the adsorption process is favorable, spontaneous physisorption process.
Keywords:
aluminium / corrosion inhibitor / linear sweep voltametry / electrochemical impedance spectroscopy / Frumikin adsorption isotherm / scanning electron microscopySource:
Metallurgical & Materials Engineering, 2012, 18, 4, 241-257Publisher:
- Association of Metallurgical Engineers of Serbia
Institution/Community
Tehnološko-metalurški fakultetTY - JOUR AU - Jevremović, Ivana AU - Mišković-Stanković, Vesna PY - 2012 UR - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/2072 AB - In this study, the inhibitive effect of ethanolamine on corrosion behavior of aluminium was investigated in 3 wt. % NaCl solution, saturated with CO2. All the experiments were carried out at 20°C. Ethanolamine was added at different concentrations between 1 mM and 8 mM. In order to determine the corrosion inhibition efficiency of investigated inhibitor and the optimal concentration of inhibitor that provides the lowest corrosion of aluminium, the open circuit potential (OCP), electrochemical impedance spectroscopy (EIS), linear sweep voltametry (LSV) measurements, weight loss measurements as well as scanning electron microscopy technique (SEM) were performed. The electrochemical study and weight loss measurements indicated that the minimum corrosion rate and maximum inhibition efficiency was detected for concentration of 5 mM of ethanolamine, as well as the ethanolamine did not change the mechanism of aluminium dissolution. The adsorption of ethanolamine was found to obey Frumkin adsorption isotherm at concentrations up to 5 mM, but further increase in concentration was found to deviate from Frumkin adsorption isotherm. The calculated value for interaction parameter a indicates attractive lateral interactions in the adsorbed inhibitor layer. The obtained value of standard free energy of adsorption, ΔGads θ, confirms that the adsorption process is favorable, spontaneous physisorption process. PB - Association of Metallurgical Engineers of Serbia T2 - Metallurgical & Materials Engineering T1 - The inhibitive effect of ethanolamine on corrosion behavior of aluminium in NaCl solution saturated with CO2 EP - 257 IS - 4 SP - 241 VL - 18 UR - https://hdl.handle.net/21.15107/rcub_technorep_2072 ER -
@article{ author = "Jevremović, Ivana and Mišković-Stanković, Vesna", year = "2012", abstract = "In this study, the inhibitive effect of ethanolamine on corrosion behavior of aluminium was investigated in 3 wt. % NaCl solution, saturated with CO2. All the experiments were carried out at 20°C. Ethanolamine was added at different concentrations between 1 mM and 8 mM. In order to determine the corrosion inhibition efficiency of investigated inhibitor and the optimal concentration of inhibitor that provides the lowest corrosion of aluminium, the open circuit potential (OCP), electrochemical impedance spectroscopy (EIS), linear sweep voltametry (LSV) measurements, weight loss measurements as well as scanning electron microscopy technique (SEM) were performed. The electrochemical study and weight loss measurements indicated that the minimum corrosion rate and maximum inhibition efficiency was detected for concentration of 5 mM of ethanolamine, as well as the ethanolamine did not change the mechanism of aluminium dissolution. The adsorption of ethanolamine was found to obey Frumkin adsorption isotherm at concentrations up to 5 mM, but further increase in concentration was found to deviate from Frumkin adsorption isotherm. The calculated value for interaction parameter a indicates attractive lateral interactions in the adsorbed inhibitor layer. The obtained value of standard free energy of adsorption, ΔGads θ, confirms that the adsorption process is favorable, spontaneous physisorption process.", publisher = "Association of Metallurgical Engineers of Serbia", journal = "Metallurgical & Materials Engineering", title = "The inhibitive effect of ethanolamine on corrosion behavior of aluminium in NaCl solution saturated with CO2", pages = "257-241", number = "4", volume = "18", url = "https://hdl.handle.net/21.15107/rcub_technorep_2072" }
Jevremović, I.,& Mišković-Stanković, V.. (2012). The inhibitive effect of ethanolamine on corrosion behavior of aluminium in NaCl solution saturated with CO2. in Metallurgical & Materials Engineering Association of Metallurgical Engineers of Serbia., 18(4), 241-257. https://hdl.handle.net/21.15107/rcub_technorep_2072
Jevremović I, Mišković-Stanković V. The inhibitive effect of ethanolamine on corrosion behavior of aluminium in NaCl solution saturated with CO2. in Metallurgical & Materials Engineering. 2012;18(4):241-257. https://hdl.handle.net/21.15107/rcub_technorep_2072 .
Jevremović, Ivana, Mišković-Stanković, Vesna, "The inhibitive effect of ethanolamine on corrosion behavior of aluminium in NaCl solution saturated with CO2" in Metallurgical & Materials Engineering, 18, no. 4 (2012):241-257, https://hdl.handle.net/21.15107/rcub_technorep_2072 .