Thermally grown oxide films and corrosion performance of ferritic stainless steels under simulated exhaust gas condensate conditions

E Huttunen-Saarivirta (Corresponding Author), V-T Kuokkala, Pekka Pohjanne

    Research output: Contribution to journalArticleScientificpeer-review

    22 Citations (Scopus)

    Abstract

    Five ferritic stainless steels are characterized in terms of thermally grown oxide films and corrosion performance under simulated exhaust gas condensate conditions. Oxide films developed at 300 °C show only little variation in microstructure and properties between the alloys, whereas those evolved at 600 °C exhibit clear differences. Especially in alloys with >11.5 wt.% chromium, the presence and distribution of such alloying elements as titanium, silicon, niobium and molybdenum are crucial for the film properties and the overall corrosion performance. The results may be exploited in the compositional optimization of the alloys for the cold-end components of automotive exhaust system.
    Original languageEnglish
    Pages (from-to)344-365
    Number of pages22
    JournalCorrosion Science
    Volume87
    DOIs
    Publication statusPublished - 2014
    MoE publication typeA1 Journal article-refereed

    Fingerprint

    Gas condensates
    Stainless Steel
    Ferritic steel
    Exhaust gases
    Oxide films
    Stainless steel
    Corrosion
    Niobium
    Molybdenum
    Chromium
    Silicon
    Alloying elements
    Titanium
    Microstructure

    Keywords

    • stainless steel
    • oxidation
    • intergranular corrosion
    • IR spectroscopy
    • EIS

    Cite this

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    abstract = "Five ferritic stainless steels are characterized in terms of thermally grown oxide films and corrosion performance under simulated exhaust gas condensate conditions. Oxide films developed at 300 °C show only little variation in microstructure and properties between the alloys, whereas those evolved at 600 °C exhibit clear differences. Especially in alloys with >11.5 wt.{\%} chromium, the presence and distribution of such alloying elements as titanium, silicon, niobium and molybdenum are crucial for the film properties and the overall corrosion performance. The results may be exploited in the compositional optimization of the alloys for the cold-end components of automotive exhaust system.",
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    Thermally grown oxide films and corrosion performance of ferritic stainless steels under simulated exhaust gas condensate conditions. / Huttunen-Saarivirta, E (Corresponding Author); Kuokkala, V-T; Pohjanne, Pekka.

    In: Corrosion Science, Vol. 87, 2014, p. 344-365.

    Research output: Contribution to journalArticleScientificpeer-review

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    PY - 2014

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    KW - IR spectroscopy

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