Corrosion Behavior of Carbon Steel in LiCl/H2O Mixtures

The corrosion behavior of 1018 carbon steel in LiCl/H2O mixtures has been evaluated by using potentiodynamic polarization curves, electrochemical noise and electrochemical impedance spectroscopy techniques. Two different concentrations of LiCl were employed, namely 35 and 40 wt. %, and the testing t...

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Bibliographic Details
Published in:Metals (Basel ) 2024-04, Vol.14 (4), p.376
Main Authors: Avilés-Flores, Modesto, Larios-Gálvez, Ana Karen, Martínez-González, José, Lopez-Sesenes, Roy, Brito-Franco, Alfredo, Cerezo, Jesús, Tejeda, Francisco Christian Martinez, Ramirez-Arteaga, America Maria, Gonzalez-Rodriguez, Jose Gonzalo
Format: Article
Language:English
Subjects:
Air conditioning
Carbon steel
Carbon steels
Charge transfer
Cooling
corrosion
Corrosion currents
Corrosion mechanisms
Corrosion potential
Crystallization
Efficiency
Electrochemical impedance spectroscopy
Electrochemical noise
Electrode polarization
Electrodes
Energy consumption
Environmental impact
Fluids
LiCl-H2O
Metals
Mixtures
Pitting (corrosion)
Pitting potential
Silver
Stainless steel
Temperature
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Summary:The corrosion behavior of 1018 carbon steel in LiCl/H2O mixtures has been evaluated by using potentiodynamic polarization curves, electrochemical noise and electrochemical impedance spectroscopy techniques. Two different concentrations of LiCl were employed, namely 35 and 40 wt. %, and the testing temperatures included 25, 35 and 70 °C. It was found that the steel showed a passive zone; the corrosion current density value increased with an increase in the solution temperature and concentration. The pitting potential value decreased with an increase in the testing temperature and the solution concentration. The corrosion process was under charge transfer control. This mechanism was unaltered either by the solution temperature or concentration. The charge transfer resistance value decreased with an increase in both the solution temperature and concentration. A localized, pitting type of corrosion dominated the corrosion morphology at 25 and 35 °C, whereas at 70 °C, the main type of attack was a mixed type of corrosion.
ISSN:2075-4701
2075-4701
DOI:10.3390/met14040376