Effect of Cation Doping on the Superplastic Flow in Yttria-Stabilized Tetragonal Zirconia Polycrystals

Junpei Mimurada, Manabu Nakano, Kazutaka Sasaki, Yuichi Ikuhara, Taketo Sakuma

    研究成果: Article査読

    45 被引用数 (Scopus)

    抄録

    The superplastic characteristics of various cation-doped yttria-stabilized tetragonal zirconia polycrystals (Y-TZP) were examined. For 1 mol% cation doping the true stress of Y-TZP is very dependent on the ionic radii of the doped cations; for instance, smaller cation radii give rise to lower true stress when compared with the other compositions for the same grain size, strain rate, and testing temperature. The altered true stress level must be due to the change in diffusivity of the accommodation process for grain boundary sliding caused by the addition of cations in ZrO2. The strain to failure of the doped zirconia is affected by both ionic radius and valence of the dopant cations.

    本文言語English
    ページ(範囲)1817-1821
    ページ数5
    ジャーナルJournal of the American Ceramic Society
    84
    8
    DOI
    出版ステータスPublished - 2001 8

    ASJC Scopus subject areas

    • セラミックおよび複合材料
    • 材料化学

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