Effect of zirconium and yttrium hydroxide precipitation conditions on the fractal structure of the resulting xerogels and 0.97ZrO2 · 0.03Y2O3 powders

We have investigated the effect of the preparation procedure (successive or simultaneous precipitation of zirconium and yttrium hydroxides) on the fractal structure of the resulting xerogels and fluorite-structure oxide nanopowders. Small-angle x-ray scattering data indicate that the xerogels and ox...

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Bibliographic Details
Published in:Inorganic materials 2007-03, Vol.43 (3), p.258-263
Main Authors: Kravchik, K. V., Gomza, Yu. P., Pashkova, O. V., Belous, A. G., Nesin, S. D.
Format: Article
Language:English
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Summary:We have investigated the effect of the preparation procedure (successive or simultaneous precipitation of zirconium and yttrium hydroxides) on the fractal structure of the resulting xerogels and fluorite-structure oxide nanopowders. Small-angle x-ray scattering data indicate that the xerogels and oxide nanopowders have, respectively, three-and two-level fractal structures. Mass-fractal aggregation is shown to improve the properties of the precipitates (good filterability and the formation of soft powders easy to disaggregate).
ISSN:0020-1685
1608-3172
DOI:10.1134/S0020168507030090