Anelasticity and strength in zirconia ceramics

M. Matsuzawa, S. Horibe, J. Sakai

    Research output: Contribution to journalArticle

    Abstract

    Non-elastic strain behavior was investigated for several different zirconia ceramics and a possible mechanism for anelasticity was discussed. Anelastic strain was detected in zirconia ceramics irrespective of the crystallographic phase and its productivity depended on the particular kind of dopant additive. It was found that the anelastic properties could be significantly influenced by the level of oxygen vacancy in the matrix, and that the anelastic strain might be produced by a slight shift of ionic species. In order to investigate the effect of anelasticity on mechanical properties on zirconia ceramics, the tensile strength was investigated for a wide range of strain rates. The obviously unique strain rate dependence was observed only in the materials having anelastic properties. It was assumed that anelasticity could be efficient at improving the tensile strength.

    Original languageEnglish
    Pages (from-to)967-972
    Number of pages6
    JournalKey Engineering Materials
    Volume280-283
    Issue numberII
    Publication statusPublished - 2005

    Keywords

    • Anelasticity
    • Fatigue
    • Fracture
    • Phase transformation
    • Zirconia

    ASJC Scopus subject areas

    • Ceramics and Composites
    • Chemical Engineering (miscellaneous)

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  • Cite this

    Matsuzawa, M., Horibe, S., & Sakai, J. (2005). Anelasticity and strength in zirconia ceramics. Key Engineering Materials, 280-283(II), 967-972.