Improvement of thermal stability of Yttria-doped tetragonal zirconia polycrystals by alloying with various oxides

Tsugio Sato, Shiro Ohtaki, Tadashi Endo, Masahiko Shimada

    Research output: Contribution to journalArticlepeer-review

    41 Citations (Scopus)

    Abstract

    Yttria-doped tetragonal zirconia polycrystals doped with 0-12 mol% of CaO, MgO, CeO2 and TiO2 were sintered at 1400-1600°C for 3 h, and the mechanical properties and thermal stability of the sintered bodies were evaluated. The degree of the tetragonal-to-monoclinic phase transformation by annealing in humid air or hot water decreased with both increasing amounts of CeO2 or TiO2 and decreasing grain size of ZrO2. Alloying with TiO2 accelerated the grain growth and depressed densification, but alloying with less than 6 mol% of CeO2 caused no significant changes in grain size and mechanical properties.

    Original languageEnglish
    Pages (from-to)167-177
    Number of pages11
    JournalInternational Journal of High Technology Ceramics
    Volume2
    Issue number3
    DOIs
    Publication statusPublished - 1986

    ASJC Scopus subject areas

    • Engineering(all)

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