Microstructures, microhardness, and crystallization behaviors of amorphous Al2 O3-YSZ coatings prepared by air plasma spraying

X. Song, T. Suhonen, C. Sun, L. Huang, X. Zheng, Y. Zeng

    Research output: Contribution to journalArticleScientificpeer-review

    4 Citations (Scopus)

    Abstract

    Three types of amorphous Al2O3-yttria-stabilized zirconia (YSZ) coatings were prepared using air plasma spraying (APS). The effects of the APS parameters on the microstructure, porosity, amorphous-phase content, and microhardness of the coatings were investigated using scanning electron microscopy (SEM), differential scanning calorimetry (DSC), and transmission electron microscopy (TEM). The results indicated that the microstructure of the coatings was dependent on the APS parameters used. The porosity of the coatings and the number of unmelted particles deposited increased with the flow rate of the primary plasma gas increasing. The amorphous-phase contents and microhardness values of the coatings exhibited a trend opposite to that of their porosity and the number of unmelted particles present in them. The crystallization behaviors and microhardness values of Al2O3-YSZ coatings annealed at different temperatures were also investigated. The results indicated that the coatings with higher amorphous-phase contents possessed homogeneous nanocrystalline structure and exhibited higher microhardness values after the heat treatments.
    Original languageEnglish
    Article number1550047
    Number of pages12
    JournalSurface Review and Letters
    Volume22
    Issue number4
    DOIs
    Publication statusPublished - 2015
    MoE publication typeA1 Journal article-refereed

    Fingerprint

    plasma spraying
    Plasma spraying
    Yttria stabilized zirconia
    Crystallization
    yttria-stabilized zirconia
    Microhardness
    microhardness
    crystallization
    coatings
    Coatings
    microstructure
    Microstructure
    air
    Air
    Porosity
    porosity
    Plasma Gases
    nanostructure (characteristics)
    Differential scanning calorimetry
    heat treatment

    Keywords

    • air plasma spraying
    • Amorphous Al2 O3-YSZ coatings
    • crystallization
    • heat treatment
    • microstructure
    • ProperPart
    • ProperTune

    Cite this

    @article{13cf5a2c2ead4ff98cc39f5808108a3b,
    title = "Microstructures, microhardness, and crystallization behaviors of amorphous Al2 O3-YSZ coatings prepared by air plasma spraying",
    abstract = "Three types of amorphous Al2O3-yttria-stabilized zirconia (YSZ) coatings were prepared using air plasma spraying (APS). The effects of the APS parameters on the microstructure, porosity, amorphous-phase content, and microhardness of the coatings were investigated using scanning electron microscopy (SEM), differential scanning calorimetry (DSC), and transmission electron microscopy (TEM). The results indicated that the microstructure of the coatings was dependent on the APS parameters used. The porosity of the coatings and the number of unmelted particles deposited increased with the flow rate of the primary plasma gas increasing. The amorphous-phase contents and microhardness values of the coatings exhibited a trend opposite to that of their porosity and the number of unmelted particles present in them. The crystallization behaviors and microhardness values of Al2O3-YSZ coatings annealed at different temperatures were also investigated. The results indicated that the coatings with higher amorphous-phase contents possessed homogeneous nanocrystalline structure and exhibited higher microhardness values after the heat treatments.",
    keywords = "air plasma spraying, Amorphous Al2 O3-YSZ coatings, crystallization, heat treatment, microstructure, ProperPart, ProperTune",
    author = "X. Song and T. Suhonen and C. Sun and L. Huang and X. Zheng and Y. Zeng",
    year = "2015",
    doi = "10.1142/S0218625X1550047X",
    language = "English",
    volume = "22",
    journal = "Surface Review and Letters",
    issn = "0218-625X",
    publisher = "World Scientific Publishing",
    number = "4",

    }

    Microstructures, microhardness, and crystallization behaviors of amorphous Al2 O3-YSZ coatings prepared by air plasma spraying. / Song, X.; Suhonen, T.; Sun, C.; Huang, L.; Zheng, X.; Zeng, Y.

    In: Surface Review and Letters, Vol. 22, No. 4, 1550047, 2015.

    Research output: Contribution to journalArticleScientificpeer-review

    TY - JOUR

    T1 - Microstructures, microhardness, and crystallization behaviors of amorphous Al2 O3-YSZ coatings prepared by air plasma spraying

    AU - Song, X.

    AU - Suhonen, T.

    AU - Sun, C.

    AU - Huang, L.

    AU - Zheng, X.

    AU - Zeng, Y.

    PY - 2015

    Y1 - 2015

    N2 - Three types of amorphous Al2O3-yttria-stabilized zirconia (YSZ) coatings were prepared using air plasma spraying (APS). The effects of the APS parameters on the microstructure, porosity, amorphous-phase content, and microhardness of the coatings were investigated using scanning electron microscopy (SEM), differential scanning calorimetry (DSC), and transmission electron microscopy (TEM). The results indicated that the microstructure of the coatings was dependent on the APS parameters used. The porosity of the coatings and the number of unmelted particles deposited increased with the flow rate of the primary plasma gas increasing. The amorphous-phase contents and microhardness values of the coatings exhibited a trend opposite to that of their porosity and the number of unmelted particles present in them. The crystallization behaviors and microhardness values of Al2O3-YSZ coatings annealed at different temperatures were also investigated. The results indicated that the coatings with higher amorphous-phase contents possessed homogeneous nanocrystalline structure and exhibited higher microhardness values after the heat treatments.

    AB - Three types of amorphous Al2O3-yttria-stabilized zirconia (YSZ) coatings were prepared using air plasma spraying (APS). The effects of the APS parameters on the microstructure, porosity, amorphous-phase content, and microhardness of the coatings were investigated using scanning electron microscopy (SEM), differential scanning calorimetry (DSC), and transmission electron microscopy (TEM). The results indicated that the microstructure of the coatings was dependent on the APS parameters used. The porosity of the coatings and the number of unmelted particles deposited increased with the flow rate of the primary plasma gas increasing. The amorphous-phase contents and microhardness values of the coatings exhibited a trend opposite to that of their porosity and the number of unmelted particles present in them. The crystallization behaviors and microhardness values of Al2O3-YSZ coatings annealed at different temperatures were also investigated. The results indicated that the coatings with higher amorphous-phase contents possessed homogeneous nanocrystalline structure and exhibited higher microhardness values after the heat treatments.

    KW - air plasma spraying

    KW - Amorphous Al2 O3-YSZ coatings

    KW - crystallization

    KW - heat treatment

    KW - microstructure

    KW - ProperPart

    KW - ProperTune

    U2 - 10.1142/S0218625X1550047X

    DO - 10.1142/S0218625X1550047X

    M3 - Article

    VL - 22

    JO - Surface Review and Letters

    JF - Surface Review and Letters

    SN - 0218-625X

    IS - 4

    M1 - 1550047

    ER -