The instability and resulting phase transition of cubic zirconia

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

    研究成果: Article査読

    27 被引用数 (Scopus)


    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.

    ジャーナルMaterials Science and Engineering A
    出版ステータスPublished - 2001 8 15

    ASJC Scopus subject areas

    • 材料科学(全般)
    • 凝縮系物理学
    • 材料力学
    • 機械工学


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