Role of Al2O3 impurities on the microstructure and properties of Y-TZP

S. N.B. Hodgson, J. Cawley, M. Clubley

    Research output: Contribution to journalConference article

    31 Citations (Scopus)

    Abstract

    Al2O3 is commonly present in, or introduced to, tetragonal zirconia polycrystal (TZP) ceramics as either an impurity or an additive during powder manufacture and/or subsequent processing, although its effects are not well understood. A study has been carried out into the effects of variously dispersed Al2O3 at the 0-1 wt.% level on the sintering characteristics, microstructure, phase composition, and mechanical properties of yttria stabilised, tetragonal zirconia polycrystal (Y-TZP). The results show that these levels of Al2O3 can enhance sintering at low temperatures, but can also cause exaggerated grain growth and reduction in sintered density for higher sintering temperatures, with corresponding changes in the mechanical properties.

    Original languageEnglish
    Pages (from-to)85-90
    Number of pages6
    JournalJournal of Materials Processing Technology
    Volume92-93
    DOIs
    Publication statusPublished - 30 Aug 1999
    EventAdvances in Materials and Processing Technologies 1997 - Guimaraes, Portugal
    Duration: 22 Jul 199726 Jul 1997

    Fingerprint

    Yttria stabilized zirconia
    Polycrystals
    Sintering
    Impurities
    Microstructure
    Mechanical properties
    Grain growth
    Phase composition
    Zirconia
    Powders
    Temperature
    Processing
    yttria stabilized tetragonal zirconia

    Cite this

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    abstract = "Al2O3 is commonly present in, or introduced to, tetragonal zirconia polycrystal (TZP) ceramics as either an impurity or an additive during powder manufacture and/or subsequent processing, although its effects are not well understood. A study has been carried out into the effects of variously dispersed Al2O3 at the 0-1 wt.{\%} level on the sintering characteristics, microstructure, phase composition, and mechanical properties of yttria stabilised, tetragonal zirconia polycrystal (Y-TZP). The results show that these levels of Al2O3 can enhance sintering at low temperatures, but can also cause exaggerated grain growth and reduction in sintered density for higher sintering temperatures, with corresponding changes in the mechanical properties.",
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    Role of Al2O3 impurities on the microstructure and properties of Y-TZP. / Hodgson, S. N.B.; Cawley, J.; Clubley, M.

    In: Journal of Materials Processing Technology, Vol. 92-93, 30.08.1999, p. 85-90.

    Research output: Contribution to journalConference article

    TY - JOUR

    T1 - Role of Al2O3 impurities on the microstructure and properties of Y-TZP

    AU - Hodgson, S. N.B.

    AU - Cawley, J.

    AU - Clubley, M.

    PY - 1999/8/30

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    N2 - Al2O3 is commonly present in, or introduced to, tetragonal zirconia polycrystal (TZP) ceramics as either an impurity or an additive during powder manufacture and/or subsequent processing, although its effects are not well understood. A study has been carried out into the effects of variously dispersed Al2O3 at the 0-1 wt.% level on the sintering characteristics, microstructure, phase composition, and mechanical properties of yttria stabilised, tetragonal zirconia polycrystal (Y-TZP). The results show that these levels of Al2O3 can enhance sintering at low temperatures, but can also cause exaggerated grain growth and reduction in sintered density for higher sintering temperatures, with corresponding changes in the mechanical properties.

    AB - Al2O3 is commonly present in, or introduced to, tetragonal zirconia polycrystal (TZP) ceramics as either an impurity or an additive during powder manufacture and/or subsequent processing, although its effects are not well understood. A study has been carried out into the effects of variously dispersed Al2O3 at the 0-1 wt.% level on the sintering characteristics, microstructure, phase composition, and mechanical properties of yttria stabilised, tetragonal zirconia polycrystal (Y-TZP). The results show that these levels of Al2O3 can enhance sintering at low temperatures, but can also cause exaggerated grain growth and reduction in sintered density for higher sintering temperatures, with corresponding changes in the mechanical properties.

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