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Preparation and sintering of fine composite precursors of mullite-zirconia by chemical copolymerization of metal alkoxides

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Abstract

Composite precursors of mullite-zirconia were prepared by mixing a mullite precursor prepared by the partial hydrolysis method and zirconium alkoxide. The mullite precursor was reacted with zirconium alkoxide in order to achieve a uniform dispersion of fine zirconia particles in the mullite matrix. The composite precursors were hydrolysed and heat-treated to examine the properties of the precursors. X-ray diffraction data showed that a large amount of tetragonal zirconia existed in the composite powders in spite of the high temperature calcination below 1600° C. These results suggested that transformation toughening of mullite-based ceramics prepared by firing the composite precursor compacts could be attained if the total densification occurred at low temperature.

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Authors and Affiliations

  1. Department of Mechanical System Engineering, Toyota Technological Institute, 2-12-1 Hisakata, Tempaku, 468, Nagoya, Japan

    Hisao Suzuki & Hajime Saito

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  1. Hisao Suzuki
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  2. Hajime Saito
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Suzuki, H., Saito, H. Preparation and sintering of fine composite precursors of mullite-zirconia by chemical copolymerization of metal alkoxides. J Mater Sci 25, 2253–2258 (1990). https://doi.org/10.1007/BF01045798

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  • DOI: https://doi.org/10.1007/BF01045798

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