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Mullite-zirconia composites

Chandran, Gopi R and Patil, KC and Chandrappa, GT (1996) Mullite-zirconia composites. In: Journal of Materials Science (full set), 31 (21). pp. 5773-5779.

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Mullite-zirconia composite powders were prepared by the combustion of an aqueous heterogeneous redox mixture consisting of Al(NO3)(3), Zr(NO3)(4)/ZrO(NO3)(2), silica fume and urea/diformyl hydrazine at 500 degrees C. X-ray diffraction data showed that a large amount of tetragonal zirconia existed in the composite powders in spite of high temperature calcination. Milled composite powders showed enhanced densification compared to the unmilled powders and the microstructure of the sintered (1600 degrees C) compacts showed the presence of spherical zirconia grains in intergranular positions along with elongated mullite grains.

Item Type: Journal Article
Publication: Journal of Materials Science (full set)
Publisher: Springer
Additional Information: Copyright of this article belongs to Springer.
Department/Centre: Division of Chemical Sciences > Inorganic & Physical Chemistry
Date Deposited: 06 May 2011 05:34
Last Modified: 06 May 2011 05:34
URI: http://eprints.iisc.ac.in/id/eprint/37416

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