Corrosion Behavior of Steels in LiBr–H2O–CaCl2–LiNO3 Systems

Ana Karen Larios-Galvez; Roy Lopez-Sesenes; Estela Sarmiento-Bustos; Isai Rosales; Jorge Uruchurtu-Chavarin; Jesus Porcayo-Calderon; Jose Gonzalo Gonzalez-Rodriguez

doi:10.3390/met12020279

Corrosion Behavior of Steels in LiBr–H₂O–CaCl₂–LiNO₃ Systems

Ana Karen Larios-Galvez, Roy Lopez-Sesenes, Estela Sarmiento-Bustos, Isai Rosales, Jorge Uruchurtu-Chavarin, Jesus Porcayo-Calderon, Jose Gonzalo Gonzalez-Rodriguez^*

^*Corresponding author for this work

Departamento de Ingeniería Química y Metalurgia

Research output: Contribution to journal › Article › peer-review

2 Scopus citations

Abstract

Conventional absorption and refrigeration systems use a LiBr/H₂O mixture, which causes corrosion problems to the metallic components. In order to avoid this and some other problems such as crystallization and vapor pressure, some additives such as CaCl₂ and/or LiNO₃ are added to the LiBr/H₂O mixture. In the present work, the corrosion behavior of 1018 carbon steel as well as of type 304 and 316L stainless steels was evaluated in LiBr/H₂O at 80 °C with the addition of CaCl₂, LiNO₃, and CaCl₂ + LiNO₃. Potentiodynamic polarization curves and electrochemical impedance spectroscopy were used for this purpose. The results showed that the corrosion current density values of all tested steels decreased with the addition of CaCl₂ and/or LiNO₃, which induced the formation of a passive film on carbon steel. Both types of stainless steels showed a passive film in all tested conditions, but the passive current density was the lowest, whereas the passive zone was the widest, for 316L steel. The corrosion mechanism remained unaltered for both stainless steels but was changed with the addition of CaCl₂ and/or LiNO₃ for carbon steel.

Original language	English
Article number	279
Journal	Metals
Volume	12
Issue number	2
DOIs	https://doi.org/10.3390/met12020279
State	Published - Feb 2022

Bibliographical note

Publisher Copyright:
© 2022 by the authors. Licensee MDPI, Basel, Switzerland.

Keywords

Carbon steel
LiBr
Pitting corrosion
Stainless steels

Access to Document

10.3390/met12020279

Cite this

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title = "Corrosion Behavior of Steels in LiBr–H2O–CaCl2–LiNO3 Systems",

abstract = "Conventional absorption and refrigeration systems use a LiBr/H2O mixture, which causes corrosion problems to the metallic components. In order to avoid this and some other problems such as crystallization and vapor pressure, some additives such as CaCl2 and/or LiNO3 are added to the LiBr/H2O mixture. In the present work, the corrosion behavior of 1018 carbon steel as well as of type 304 and 316L stainless steels was evaluated in LiBr/H2O at 80 °C with the addition of CaCl2, LiNO3, and CaCl2 + LiNO3. Potentiodynamic polarization curves and electrochemical impedance spectroscopy were used for this purpose. The results showed that the corrosion current density values of all tested steels decreased with the addition of CaCl2 and/or LiNO3, which induced the formation of a passive film on carbon steel. Both types of stainless steels showed a passive film in all tested conditions, but the passive current density was the lowest, whereas the passive zone was the widest, for 316L steel. The corrosion mechanism remained unaltered for both stainless steels but was changed with the addition of CaCl2 and/or LiNO3 for carbon steel.",

keywords = "Carbon steel, LiBr, Pitting corrosion, Stainless steels",

author = "Larios-Galvez, {Ana Karen} and Roy Lopez-Sesenes and Estela Sarmiento-Bustos and Isai Rosales and Jorge Uruchurtu-Chavarin and Jesus Porcayo-Calderon and Gonzalez-Rodriguez, {Jose Gonzalo}",

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AU - Larios-Galvez, Ana Karen

AU - Lopez-Sesenes, Roy

AU - Sarmiento-Bustos, Estela

AU - Rosales, Isai

AU - Uruchurtu-Chavarin, Jorge

AU - Porcayo-Calderon, Jesus

AU - Gonzalez-Rodriguez, Jose Gonzalo

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N2 - Conventional absorption and refrigeration systems use a LiBr/H2O mixture, which causes corrosion problems to the metallic components. In order to avoid this and some other problems such as crystallization and vapor pressure, some additives such as CaCl2 and/or LiNO3 are added to the LiBr/H2O mixture. In the present work, the corrosion behavior of 1018 carbon steel as well as of type 304 and 316L stainless steels was evaluated in LiBr/H2O at 80 °C with the addition of CaCl2, LiNO3, and CaCl2 + LiNO3. Potentiodynamic polarization curves and electrochemical impedance spectroscopy were used for this purpose. The results showed that the corrosion current density values of all tested steels decreased with the addition of CaCl2 and/or LiNO3, which induced the formation of a passive film on carbon steel. Both types of stainless steels showed a passive film in all tested conditions, but the passive current density was the lowest, whereas the passive zone was the widest, for 316L steel. The corrosion mechanism remained unaltered for both stainless steels but was changed with the addition of CaCl2 and/or LiNO3 for carbon steel.

AB - Conventional absorption and refrigeration systems use a LiBr/H2O mixture, which causes corrosion problems to the metallic components. In order to avoid this and some other problems such as crystallization and vapor pressure, some additives such as CaCl2 and/or LiNO3 are added to the LiBr/H2O mixture. In the present work, the corrosion behavior of 1018 carbon steel as well as of type 304 and 316L stainless steels was evaluated in LiBr/H2O at 80 °C with the addition of CaCl2, LiNO3, and CaCl2 + LiNO3. Potentiodynamic polarization curves and electrochemical impedance spectroscopy were used for this purpose. The results showed that the corrosion current density values of all tested steels decreased with the addition of CaCl2 and/or LiNO3, which induced the formation of a passive film on carbon steel. Both types of stainless steels showed a passive film in all tested conditions, but the passive current density was the lowest, whereas the passive zone was the widest, for 316L steel. The corrosion mechanism remained unaltered for both stainless steels but was changed with the addition of CaCl2 and/or LiNO3 for carbon steel.

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