Inter-Diffusion between NiO Coating and the Oxide Scale on Fe-22Cr Alloy

    Research output: Contribution to journalJournal articleResearchpeer-review

    Abstract

    The effect of Ni and NiO coatings on Fe-22Cr during oxidation at 1173K in 1% H2O was examined with respect to scale microstructure for oxidation times between 0 and 504 hours. Upon oxidation of the as pre-treated Fe-22Cr, Cr2O3 and a spinel developed. Oxidation and inter-diffusion between the Ni coating and Fe-22Cr occurred simultaneously. The scale consisted of NiO, a Fe-Ni spinel and Cr2O3. For the NiO coated alloy, a thin spinel layer developed between the NiO coating and the Cr2O3 scale. The microstructures of the scales are discussed with respect to calculated isotherms in the Fe-Cr-O, Cr-Ni-O and Ni-Fe-O phase diagrams and inter-diffusion profiles between Ni and Fe-22Cr.
    Original languageEnglish
    JournalJournal of Corrosion Science and Engineering
    Volume6
    Issue number73
    Pages (from-to)12
    ISSN1466-8858
    Publication statusPublished - 2003

    Keywords

    • Materials technology

    Fingerprint Dive into the research topics of 'Inter-Diffusion between NiO Coating and the Oxide Scale on Fe-22Cr Alloy'. Together they form a unique fingerprint.

    Cite this