High temperature corrosion of nanoceria coated 9Cr-1Mo ferritic steel in air and steam

    Authors

    T. Sundararajan; S. Kuroda; J. Kawakita;S. Seal

    Comments

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    Abbreviated Journal Title

    Surf. Coat. Technol.

    Keywords

    high temperature; corrosion; nanoceria; air and steam oxidation; THERMAL SPRAY COATINGS; OXIDATION RESISTANCE; 50NI-50CR; BEHAVIOR; Materials Science, Coatings & Films; Physics, Applied

    Abstract

    In this article, air and steam oxidation resistance of bare and nanoceria coated 9Cr-1Mo ferritic steel at 650 degrees C for 500h is reported. The kinetics of the oxidation process and the changes in the morphology and the chemistry for both the specimens were analyzed by backscattered electron and EPMA mapping. The nanoceria coated 9Cr-1Mo ferritic steel showed better oxidation resistance than uncoated steel under similar conditions. The thickness of the oxide scales formed on the coated samples was significantly reduced as compared to the uncoated substrates. The effectiveness of such a thin and simple nanocoating to improve the oxidation resistance of 9Cr-1Mo ferritic steel compared to the pristine is attributed to the change in the migration of cations from outward to inward diffusion of oxygen as the major mechanism. (c) 2006 Elsevier B.V. All rights reserved.

    Journal Title

    Surface & Coatings Technology

    Volume

    201

    Issue/Number

    6

    Publication Date

    1-1-2006

    Document Type

    Article

    Language

    English

    First Page

    2124

    Last Page

    2130

    WOS Identifier

    WOS:000244831800003

    ISSN

    0257-8972

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