Estimation of the parameters of oxide film growth on nickel-based alloys in high-temperature water electrolytes

Martin Bojinov, Anouk Galtayries, Petri Kinnunen, Alexandre Machet, Philippe Marcus

    Research output: Contribution to journalArticleScientificpeer-review

    44 Citations (Scopus)

    Abstract

    The Mixed-Conduction Model (MCM) has been adapted to obtain the main kinetic and transport parameters for passive film growth on nickelbased alloys in high-temperature electrolytes. For the purpose, a procedure for the calculation of these parameters from electrochemical impedance spectroscopic data measured on Ni-15% and Ni-20%Cr alloys in 0.1M Na2B4O7 at 300°C in a wide potential range has been devised. The obtained sets of parameters have been used to successfully predict the steady-state current density versus potential dependence for the two Ni-Cr alloys, as well as the thickness versus time dependence for films grown on Alloy 600 at times ranging between a few minutes and a few thousand hours. The calculations are supported by results of previous XPS measurements of film growth on Alloy 600 showing that the barrier layer growing in the early stage consists of Cr2O3
    Original languageEnglish
    Pages (from-to)7475-7483
    JournalElectrochimica Acta
    Volume52
    Issue number26
    DOIs
    Publication statusPublished - 2007
    MoE publication typeA1 Journal article-refereed

    Fingerprint

    Film growth
    Nickel
    Electrolytes
    Oxide films
    Water
    Temperature
    Current density
    X ray photoelectron spectroscopy
    Kinetics

    Keywords

    • nickel-based alloys
    • Oxide film growth
    • High-temperature water
    • Kinetic model

    Cite this

    Bojinov, Martin ; Galtayries, Anouk ; Kinnunen, Petri ; Machet, Alexandre ; Marcus, Philippe. / Estimation of the parameters of oxide film growth on nickel-based alloys in high-temperature water electrolytes. In: Electrochimica Acta. 2007 ; Vol. 52, No. 26. pp. 7475-7483.
    @article{522611aef4d548aab9cb45d67606ce7e,
    title = "Estimation of the parameters of oxide film growth on nickel-based alloys in high-temperature water electrolytes",
    abstract = "The Mixed-Conduction Model (MCM) has been adapted to obtain the main kinetic and transport parameters for passive film growth on nickelbased alloys in high-temperature electrolytes. For the purpose, a procedure for the calculation of these parameters from electrochemical impedance spectroscopic data measured on Ni-15{\%} and Ni-20{\%}Cr alloys in 0.1M Na2B4O7 at 300°C in a wide potential range has been devised. The obtained sets of parameters have been used to successfully predict the steady-state current density versus potential dependence for the two Ni-Cr alloys, as well as the thickness versus time dependence for films grown on Alloy 600 at times ranging between a few minutes and a few thousand hours. The calculations are supported by results of previous XPS measurements of film growth on Alloy 600 showing that the barrier layer growing in the early stage consists of Cr2O3",
    keywords = "nickel-based alloys, Oxide film growth, High-temperature water, Kinetic model",
    author = "Martin Bojinov and Anouk Galtayries and Petri Kinnunen and Alexandre Machet and Philippe Marcus",
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    Estimation of the parameters of oxide film growth on nickel-based alloys in high-temperature water electrolytes. / Bojinov, Martin; Galtayries, Anouk; Kinnunen, Petri; Machet, Alexandre; Marcus, Philippe.

    In: Electrochimica Acta, Vol. 52, No. 26, 2007, p. 7475-7483.

    Research output: Contribution to journalArticleScientificpeer-review

    TY - JOUR

    T1 - Estimation of the parameters of oxide film growth on nickel-based alloys in high-temperature water electrolytes

    AU - Bojinov, Martin

    AU - Galtayries, Anouk

    AU - Kinnunen, Petri

    AU - Machet, Alexandre

    AU - Marcus, Philippe

    N1 - Project code: 3437

    PY - 2007

    Y1 - 2007

    N2 - The Mixed-Conduction Model (MCM) has been adapted to obtain the main kinetic and transport parameters for passive film growth on nickelbased alloys in high-temperature electrolytes. For the purpose, a procedure for the calculation of these parameters from electrochemical impedance spectroscopic data measured on Ni-15% and Ni-20%Cr alloys in 0.1M Na2B4O7 at 300°C in a wide potential range has been devised. The obtained sets of parameters have been used to successfully predict the steady-state current density versus potential dependence for the two Ni-Cr alloys, as well as the thickness versus time dependence for films grown on Alloy 600 at times ranging between a few minutes and a few thousand hours. The calculations are supported by results of previous XPS measurements of film growth on Alloy 600 showing that the barrier layer growing in the early stage consists of Cr2O3

    AB - The Mixed-Conduction Model (MCM) has been adapted to obtain the main kinetic and transport parameters for passive film growth on nickelbased alloys in high-temperature electrolytes. For the purpose, a procedure for the calculation of these parameters from electrochemical impedance spectroscopic data measured on Ni-15% and Ni-20%Cr alloys in 0.1M Na2B4O7 at 300°C in a wide potential range has been devised. The obtained sets of parameters have been used to successfully predict the steady-state current density versus potential dependence for the two Ni-Cr alloys, as well as the thickness versus time dependence for films grown on Alloy 600 at times ranging between a few minutes and a few thousand hours. The calculations are supported by results of previous XPS measurements of film growth on Alloy 600 showing that the barrier layer growing in the early stage consists of Cr2O3

    KW - nickel-based alloys

    KW - Oxide film growth

    KW - High-temperature water

    KW - Kinetic model

    U2 - 10.1016/j.electacta.2007.06.002

    DO - 10.1016/j.electacta.2007.06.002

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    SP - 7475

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    JO - Electrochimica Acta

    JF - Electrochimica Acta

    SN - 0013-4686

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