The instability and resulting phase transition of cubic zirconia

N. Shibata, J. Katamura, A. Kuwabara, Y. Ikuhara, T. Sakuma

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    27 Citations (Scopus)

    Abstract

    The instability of cubic zirconia(c-ZrO2) and the microstructure evolution associated with the cubic-to-tetragonal phase transition are discussed from experimental data together with theoretical approach using computer simulation. It was found that the electrical repulsive interaction between neighboring oxygen ions is a parameter to describe the instability of c-ZrO2. Assuming that this phase transition is of a second-order type, very unique microstructures such as the domain structure and the modulated structure, can be simulated by computer. The results are consistent with the microstructures developed by the diffusionless c-t phase transition and also the diffusional phase separation, which were experimentally observed in Zr O2-Y2O3 and the other binary systems containing cubic stabilizing oxides. It is also predicted from the simulation that cations such as yttrium ions tend to be segregated in antiphase domain boundaries (APBs) during annealing in a single t-ZrO2 field. The segregation of yttrium ions in APBs of a single t-ZrO2 was experimentally detected in the system ZrO2- Y2O3- TiO2.

    Original languageEnglish
    Pages (from-to)90-98
    Number of pages9
    JournalMaterials Science and Engineering A
    Volume312
    Issue number1-2
    DOIs
    Publication statusPublished - 2001 Aug 15

    Keywords

    • Computer simulation
    • Domain structure
    • Modulated structure
    • Phase transition
    • TEM-EDS analysis
    • Zirconia

    ASJC Scopus subject areas

    • Materials Science(all)
    • Condensed Matter Physics
    • Mechanics of Materials
    • Mechanical Engineering

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