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    Neutron Diffraction of Zirconia-Dispersed Alumina with increasing stress and temperature

    Access Status
    Fulltext not available
    Authors
    Carter, Geoffrey
    Van Riessen, Arie
    Date
    2008
    Type
    Journal Article
    
    Metadata
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    Citation
    Carter, Geoffrey A. and Van Riessen, Arie. 2008. Neutron Diffraction of Zirconia-Dispersed Alumina with increasing stress and temperature. Journal of the American Ceramic Society 91 (2): pp. 559-562.
    Source Title
    Journal of the American Ceramic Society
    DOI
    10.1111/j.1551-2916.2007.02161.x
    ISSN
    0002-7820
    Faculty
    Centre for Materials Research (CMR)
    Faculty of Science and Engineering
    School
    Department of Applied Chemistry
    Remarks

    Copyright © 2008 John Wiley & Sons, Ltd.

    URI
    http://hdl.handle.net/20.500.11937/34826
    Collection
    • Curtin Research Publications
    Abstract

    Neutron and X-ray diffraction were used to investigate changesin the phase composition and lattice parameters with temperatureand pressure of a 20-wt% zirconia-dispersed alumina composite.Neutron diffraction was used to determine the variationof tetragonal/monoclinic zirconia phase abundance for the bulkwith stress. The bulk tetragonal/monoclinic ratio decreased by40% for a stress of 550 MPa. A difference in the tetragonal/monoclinic ratio between the near-surface and the bulk of theprocessed samples is believed to contribute to observed variationsin nonuniform strain in the matrix, which has the effect ofprestressing the sample. Placing a stress on the sample initiallyreleases this prestressing.

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