The effect of pH on the corrosion protection of aluminum alloys in lithium-carbonate-containing NaCl solutions

E. Michailidou; P. Visser; J. M.C. Mol; A. Kosari; H. Terryn; K. Baert; Y. Gonzalez-Garcia

doi:10.1016/j.corsci.2022.110851

The effect of pH on the corrosion protection of aluminum alloys in lithium-carbonate-containing NaCl solutions

E. Michailidou, P. Visser, J. M.C. Mol, A. Kosari, H. Terryn, K. Baert, Y. Gonzalez-Garcia

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The corrosion inhibiting effect of lithium carbonate has been studied over the pH range relevant for atmospheric corrosion conditions at the polymer/metal interface. It is demonstrated that lithium carbonate offers optimum corrosion protection under moderately alkaline conditions attributed to the formation of a protective layer identified as aluminum-lithium layered double hydroxide. It is proposed that an active-to-passive transition occurs in the presence of lithium carbonate under moderately alkaline conditions where anodic dissolution of the aluminum matrix is an important step prior to the formation of the protective layer. After prolonged exposure, the protective layer is uniformly formed on the surface of AA2024-T3 and lithium containing AA2198-T8 covering both the matrix and active intermetallic particles thus hindering further corrosion reactions.

Originele taal-2	English
Artikelnummer	110851
Aantal pagina's	14
Tijdschrift	Corrosion Science
Volume	210
DOI's	https://doi.org/10.1016/j.corsci.2022.110851
Status	Published - jan. 2023

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Funding Information:
This study was supported by the European research program Clean Sky 2 . The ecoTECH Core Partner project has received funding from the European Union Horizon 2020 Clean Sky 2 Joint Undertaking under the AIRFRAME ITD grant agreement 945521 and the Transverse Activity ecoDESIGN grant agreement 945549 .

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© 2022

Copyright:
Copyright 2023 Elsevier B.V., All rights reserved.

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title = "The effect of pH on the corrosion protection of aluminum alloys in lithium-carbonate-containing NaCl solutions",

abstract = "The corrosion inhibiting effect of lithium carbonate has been studied over the pH range relevant for atmospheric corrosion conditions at the polymer/metal interface. It is demonstrated that lithium carbonate offers optimum corrosion protection under moderately alkaline conditions attributed to the formation of a protective layer identified as aluminum-lithium layered double hydroxide. It is proposed that an active-to-passive transition occurs in the presence of lithium carbonate under moderately alkaline conditions where anodic dissolution of the aluminum matrix is an important step prior to the formation of the protective layer. After prolonged exposure, the protective layer is uniformly formed on the surface of AA2024-T3 and lithium containing AA2198-T8 covering both the matrix and active intermetallic particles thus hindering further corrosion reactions.",

keywords = "Aluminium, Lithium carbonate, Passivation, Potentiodynamic polarisation, Raman Spectroscopy, SEM",

author = "E. Michailidou and P. Visser and Mol, {J. M.C.} and A. Kosari and H. Terryn and K. Baert and Y. Gonzalez-Garcia",

note = "Funding Information: This study was supported by the European research program Clean Sky 2 . The ecoTECH Core Partner project has received funding from the European Union Horizon 2020 Clean Sky 2 Joint Undertaking under the AIRFRAME ITD grant agreement 945521 and the Transverse Activity ecoDESIGN grant agreement 945549 . Publisher Copyright: {\textcopyright} 2022 Copyright: Copyright 2023 Elsevier B.V., All rights reserved.",

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doi = "10.1016/j.corsci.2022.110851",

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AU - Michailidou, E.

AU - Visser, P.

AU - Mol, J. M.C.

AU - Kosari, A.

AU - Terryn, H.

AU - Baert, K.

AU - Gonzalez-Garcia, Y.

N1 - Funding Information: This study was supported by the European research program Clean Sky 2 . The ecoTECH Core Partner project has received funding from the European Union Horizon 2020 Clean Sky 2 Joint Undertaking under the AIRFRAME ITD grant agreement 945521 and the Transverse Activity ecoDESIGN grant agreement 945549 . Publisher Copyright: © 2022 Copyright: Copyright 2023 Elsevier B.V., All rights reserved.

PY - 2023/1

Y1 - 2023/1

N2 - The corrosion inhibiting effect of lithium carbonate has been studied over the pH range relevant for atmospheric corrosion conditions at the polymer/metal interface. It is demonstrated that lithium carbonate offers optimum corrosion protection under moderately alkaline conditions attributed to the formation of a protective layer identified as aluminum-lithium layered double hydroxide. It is proposed that an active-to-passive transition occurs in the presence of lithium carbonate under moderately alkaline conditions where anodic dissolution of the aluminum matrix is an important step prior to the formation of the protective layer. After prolonged exposure, the protective layer is uniformly formed on the surface of AA2024-T3 and lithium containing AA2198-T8 covering both the matrix and active intermetallic particles thus hindering further corrosion reactions.

AB - The corrosion inhibiting effect of lithium carbonate has been studied over the pH range relevant for atmospheric corrosion conditions at the polymer/metal interface. It is demonstrated that lithium carbonate offers optimum corrosion protection under moderately alkaline conditions attributed to the formation of a protective layer identified as aluminum-lithium layered double hydroxide. It is proposed that an active-to-passive transition occurs in the presence of lithium carbonate under moderately alkaline conditions where anodic dissolution of the aluminum matrix is an important step prior to the formation of the protective layer. After prolonged exposure, the protective layer is uniformly formed on the surface of AA2024-T3 and lithium containing AA2198-T8 covering both the matrix and active intermetallic particles thus hindering further corrosion reactions.

KW - Aluminium

KW - Lithium carbonate

KW - Passivation

KW - Potentiodynamic polarisation

KW - Raman Spectroscopy

KW - SEM

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DO - 10.1016/j.corsci.2022.110851

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SN - 0010-938X

VL - 210

JO - Corrosion Science

JF - Corrosion Science

M1 - 110851

ER -

The effect of pH on the corrosion protection of aluminum alloys in lithium-carbonate-containing NaCl solutions

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