Oxidation model for construction materials in supercritical water: Estimation of kinetic and transport parameters

Sami Penttilä, Iva Betova, Martin Bojinov, Petri Kinnunen, Aki Toivonen

    Research output: Contribution to journalArticleScientificpeer-review

    12 Citations (Scopus)

    Abstract

    An upgraded model was employed to obtain estimates of kinetic parameters of oxidation of stainless steel Sanicro 28 (UNS N08028) and nickel-based alloy 690 (UNS N06690) in supercritical water at 650. °C/25. MPa up to 2000. h. In the present approach, it is assumed that the growth of the outer layer is governed by the transport of cations through the inner layer via an interstitialcy mechanism. The model is able to reproduce quantitatively the depth profiles of constituent elements oxide layer, as well as in the transition layer situated between the inner layer and the bulk alloy.
    Original languageEnglish
    Pages (from-to)36-46
    JournalCorrosion Science
    Volume100
    DOIs
    Publication statusPublished - 2015
    MoE publication typeA1 Journal article-refereed

    Fingerprint

    Oxidation
    Kinetics
    Water
    Stainless Steel
    Nickel
    Kinetic parameters
    Oxides
    Cations
    Stainless steel
    Positive ions

    Keywords

    • A. Stainless steel
    • B. Modeling studies
    • C. High-temperature corrosion

    Cite this

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    title = "Oxidation model for construction materials in supercritical water: Estimation of kinetic and transport parameters",
    abstract = "An upgraded model was employed to obtain estimates of kinetic parameters of oxidation of stainless steel Sanicro 28 (UNS N08028) and nickel-based alloy 690 (UNS N06690) in supercritical water at 650. °C/25. MPa up to 2000. h. In the present approach, it is assumed that the growth of the outer layer is governed by the transport of cations through the inner layer via an interstitialcy mechanism. The model is able to reproduce quantitatively the depth profiles of constituent elements oxide layer, as well as in the transition layer situated between the inner layer and the bulk alloy.",
    keywords = "A. Stainless steel, B. Modeling studies, C. High-temperature corrosion",
    author = "Sami Penttil{\"a} and Iva Betova and Martin Bojinov and Petri Kinnunen and Aki Toivonen",
    year = "2015",
    doi = "10.1016/j.corsci.2015.06.033",
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    Oxidation model for construction materials in supercritical water : Estimation of kinetic and transport parameters. / Penttilä, Sami; Betova, Iva; Bojinov, Martin; Kinnunen, Petri; Toivonen, Aki.

    In: Corrosion Science, Vol. 100, 2015, p. 36-46.

    Research output: Contribution to journalArticleScientificpeer-review

    TY - JOUR

    T1 - Oxidation model for construction materials in supercritical water

    T2 - Estimation of kinetic and transport parameters

    AU - Penttilä, Sami

    AU - Betova, Iva

    AU - Bojinov, Martin

    AU - Kinnunen, Petri

    AU - Toivonen, Aki

    PY - 2015

    Y1 - 2015

    N2 - An upgraded model was employed to obtain estimates of kinetic parameters of oxidation of stainless steel Sanicro 28 (UNS N08028) and nickel-based alloy 690 (UNS N06690) in supercritical water at 650. °C/25. MPa up to 2000. h. In the present approach, it is assumed that the growth of the outer layer is governed by the transport of cations through the inner layer via an interstitialcy mechanism. The model is able to reproduce quantitatively the depth profiles of constituent elements oxide layer, as well as in the transition layer situated between the inner layer and the bulk alloy.

    AB - An upgraded model was employed to obtain estimates of kinetic parameters of oxidation of stainless steel Sanicro 28 (UNS N08028) and nickel-based alloy 690 (UNS N06690) in supercritical water at 650. °C/25. MPa up to 2000. h. In the present approach, it is assumed that the growth of the outer layer is governed by the transport of cations through the inner layer via an interstitialcy mechanism. The model is able to reproduce quantitatively the depth profiles of constituent elements oxide layer, as well as in the transition layer situated between the inner layer and the bulk alloy.

    KW - A. Stainless steel

    KW - B. Modeling studies

    KW - C. High-temperature corrosion

    U2 - 10.1016/j.corsci.2015.06.033

    DO - 10.1016/j.corsci.2015.06.033

    M3 - Article

    VL - 100

    SP - 36

    EP - 46

    JO - Corrosion Science

    JF - Corrosion Science

    SN - 0010-938X

    ER -