The corrosion behavior of AA7049 aluminum alloy in NaCl solution in the presence of environmentally-friendly corrosion inhibitors (Ce-chloride, Ce-formate, Ce-acetate, and Ce-propionate) was analyzed. The chemical composition of intermetallic particles was evaluated by a Scanning Electron Microscope, equipped for Energy Dispersive Spectroscopy measurements, while the presence of cerium and type of functional groups in inhibitors surface layers were analyzed by X-ray Photoelectron Spectroscopy and Fourier-Transform Infrared Spectroscopy, respectively. Inhibitor efficiencies were tested by applying electrochemical techniques such as Electrochemical Impedance Spectroscopy and Linear Sweep Voltammetry. Ce-propionate showed a greater inhibitory effect than all other tested corrosion inhibitors. The inhibitory effect decreases in the following order: Ce-propionate > Ce-acetate > Ce-formate > Ce-chloride. Propionate anions have a higher water contact angle and also a longer aliphatic side cha...in than acetate and formate anions. The mechanism of inhibitory action of Ce-propionate and other tested corrosion inhibitors has been proposed.
Keywords:
understanding localized corrosion / intermetallic phases common / alluminium- alloys
Source:
Journal of Electrochemical Society, 2021, 168, 8, 081501-
TY - JOUR
AU - Marunkić, Dunja
AU - Pejić, Jovanka
AU - Jegdić, Bore
AU - Linić, Suzana
AU - Perišić, Jasmina
AU - Radojković, Bojana
AU - Marinković, Aleksandar D.
PY - 2021
UR - https://cer.ihtm.bg.ac.rs/handle/123456789/4787
AB - The corrosion behavior of AA7049 aluminum alloy in NaCl solution in the presence of environmentally-friendly corrosion inhibitors (Ce-chloride, Ce-formate, Ce-acetate, and Ce-propionate) was analyzed. The chemical composition of intermetallic particles was evaluated by a Scanning Electron Microscope, equipped for Energy Dispersive Spectroscopy measurements, while the presence of cerium and type of functional groups in inhibitors surface layers were analyzed by X-ray Photoelectron Spectroscopy and Fourier-Transform Infrared Spectroscopy, respectively. Inhibitor efficiencies were tested by applying electrochemical techniques such as Electrochemical Impedance Spectroscopy and Linear Sweep Voltammetry. Ce-propionate showed a greater inhibitory effect than all other tested corrosion inhibitors. The inhibitory effect decreases in the following order: Ce-propionate > Ce-acetate > Ce-formate > Ce-chloride. Propionate anions have a higher water contact angle and also a longer aliphatic side chain than acetate and formate anions. The mechanism of inhibitory action of Ce-propionate and other tested corrosion inhibitors has been proposed.
PB - IOP Publishing
T2 - Journal of Electrochemical Society
T1 - Inhibitory Effect of Cerium Salts of Lower Carboxylic Acids on Al-Zn-Mg-Cu Alloy in NaCl Solution
VL - 168
IS - 8
SP - 081501
DO - 10.1149/1945-7111/ac1895
ER -
@article{
author = "Marunkić, Dunja and Pejić, Jovanka and Jegdić, Bore and Linić, Suzana and Perišić, Jasmina and Radojković, Bojana and Marinković, Aleksandar D.",
year = "2021",
abstract = "The corrosion behavior of AA7049 aluminum alloy in NaCl solution in the presence of environmentally-friendly corrosion inhibitors (Ce-chloride, Ce-formate, Ce-acetate, and Ce-propionate) was analyzed. The chemical composition of intermetallic particles was evaluated by a Scanning Electron Microscope, equipped for Energy Dispersive Spectroscopy measurements, while the presence of cerium and type of functional groups in inhibitors surface layers were analyzed by X-ray Photoelectron Spectroscopy and Fourier-Transform Infrared Spectroscopy, respectively. Inhibitor efficiencies were tested by applying electrochemical techniques such as Electrochemical Impedance Spectroscopy and Linear Sweep Voltammetry. Ce-propionate showed a greater inhibitory effect than all other tested corrosion inhibitors. The inhibitory effect decreases in the following order: Ce-propionate > Ce-acetate > Ce-formate > Ce-chloride. Propionate anions have a higher water contact angle and also a longer aliphatic side chain than acetate and formate anions. The mechanism of inhibitory action of Ce-propionate and other tested corrosion inhibitors has been proposed.",
publisher = "IOP Publishing",
journal = "Journal of Electrochemical Society",
title = "Inhibitory Effect of Cerium Salts of Lower Carboxylic Acids on Al-Zn-Mg-Cu Alloy in NaCl Solution",
volume = "168",
number = "8",
pages = "081501",
doi = "10.1149/1945-7111/ac1895"
}
Marunkić, D., Pejić, J., Jegdić, B., Linić, S., Perišić, J., Radojković, B.,& Marinković, A. D.. (2021). Inhibitory Effect of Cerium Salts of Lower Carboxylic Acids on Al-Zn-Mg-Cu Alloy in NaCl Solution. in Journal of Electrochemical Society
IOP Publishing., 168(8), 081501.
https://doi.org/10.1149/1945-7111/ac1895
Marunkić D, Pejić J, Jegdić B, Linić S, Perišić J, Radojković B, Marinković AD. Inhibitory Effect of Cerium Salts of Lower Carboxylic Acids on Al-Zn-Mg-Cu Alloy in NaCl Solution. in Journal of Electrochemical Society. 2021;168(8):081501.
doi:10.1149/1945-7111/ac1895 .
Marunkić, Dunja, Pejić, Jovanka, Jegdić, Bore, Linić, Suzana, Perišić, Jasmina, Radojković, Bojana, Marinković, Aleksandar D., "Inhibitory Effect of Cerium Salts of Lower Carboxylic Acids on Al-Zn-Mg-Cu Alloy in NaCl Solution" in Journal of Electrochemical Society, 168, no. 8 (2021):081501,
https://doi.org/10.1149/1945-7111/ac1895 . .
