Influence of precursor dispersity and agglomeration on mechanical characteristics of ZrO2-Ce2O3 and ZrO2-Y2O3-Ce2O3 ceramics

    Authors

    V. G. Konakov; S. Seal; E. N. Solovieva; D. A. Ivanov-Pavlov; M. M. Pivovarov; S. N. Golubev;A. V. Shorochov

    Comments

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    Abbreviated Journal Title

    Rev. Adv. Mater. Sci.

    Keywords

    Nanoscience & Nanotechnology; Materials Science, Multidisciplinary

    Abstract

    Powder precursors of ZrO2-Ce2O3 and ZrO2-Y2O3-Ce2O3 systems were synthesized by sol-gel method. Dispersity of the powders depended on concentrations of starting reagents and synthesis conditions. To characterize the powder dispersity and aggregated state, electron microscopy and laser scattering particle size distribution analysis were used. From the powder precursors ceramic samples were prepared and their mechanical characteristics were studied by three points bending method at 1000 degrees C. It was revealed that bending strength - particle size curve for the system of ZrO2-Ce2O3 has a pronounced maximum. This phenomenon is explained by a change in cerium valence depending on powder precursor agglomerate size.

    Journal Title

    Reviews on Advanced Materials Science

    Volume

    16

    Issue/Number

    1-2

    Publication Date

    1-1-2007

    Document Type

    Article

    Language

    English

    First Page

    96

    Last Page

    101

    WOS Identifier

    WOS:000252262700008

    ISSN

    1606-5131

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