A study of NiCo0.6Fe0.2CrxSiAlTiy high-entropy alloys for applications as a high-temperature protective coating and a bond coat in thermal barrier coating systems

Wei Lin Hsu, Hideyuki Murakami, Hiroshi Araki, Makoto Watanabe, Seiji Kuroda, An Chou Yeh, Jien Wei Yeh

    Research output: Contribution to journalArticle

    1 Citation (Scopus)

    Abstract

    Atmospheric plasma spraying, high-velocity oxy-fuel spraying and warm spraying processes were used to prepare NiCo0.6Fe0.2Cr1.5SiAlTi0.2 and NiCo0.6Fe0.2Cr1.3SiAl high-entropy alloy coatings for the investigation of their high temperature properties. The best-performer, the warm-sprayed high-entropy alloy coating was then applied to a thermal barrier coating system as a bond coat over an Incoloy 800H substrate. Experimental results show that the investigated high-entropy alloy coatings have high hardness, excellent wear resistance and good oxidation resistance at 1100C that makes them promising overlay coatings for elevated temperature applications.

    Original languageEnglish
    Pages (from-to)C524-C531
    JournalJournal of the Electrochemical Society
    Volume165
    Issue number9
    DOIs
    Publication statusPublished - 2018 Jan 1

    Fingerprint

    Thermal barrier coatings
    protective coatings
    Protective coatings
    coating
    Entropy
    entropy
    coatings
    Coatings
    Spraying
    HVOF thermal spraying
    High temperature properties
    Temperature
    plasma spraying
    Plasma spraying
    oxidation resistance
    spraying
    Oxidation resistance
    wear resistance
    Wear resistance
    hardness

    ASJC Scopus subject areas

    • Electronic, Optical and Magnetic Materials
    • Renewable Energy, Sustainability and the Environment
    • Condensed Matter Physics
    • Surfaces, Coatings and Films
    • Electrochemistry
    • Materials Chemistry

    Cite this

    A study of NiCo0.6Fe0.2CrxSiAlTiy high-entropy alloys for applications as a high-temperature protective coating and a bond coat in thermal barrier coating systems. / Hsu, Wei Lin; Murakami, Hideyuki; Araki, Hiroshi; Watanabe, Makoto; Kuroda, Seiji; Yeh, An Chou; Yeh, Jien Wei.

    In: Journal of the Electrochemical Society, Vol. 165, No. 9, 01.01.2018, p. C524-C531.

    Research output: Contribution to journalArticle

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    abstract = "Atmospheric plasma spraying, high-velocity oxy-fuel spraying and warm spraying processes were used to prepare NiCo0.6Fe0.2Cr1.5SiAlTi0.2 and NiCo0.6Fe0.2Cr1.3SiAl high-entropy alloy coatings for the investigation of their high temperature properties. The best-performer, the warm-sprayed high-entropy alloy coating was then applied to a thermal barrier coating system as a bond coat over an Incoloy 800H substrate. Experimental results show that the investigated high-entropy alloy coatings have high hardness, excellent wear resistance and good oxidation resistance at 1100◦C that makes them promising overlay coatings for elevated temperature applications.",
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    AU - Hsu, Wei Lin

    AU - Murakami, Hideyuki

    AU - Araki, Hiroshi

    AU - Watanabe, Makoto

    AU - Kuroda, Seiji

    AU - Yeh, An Chou

    AU - Yeh, Jien Wei

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