The influence of crystallization and washing medium on the characteristics of nanocrystalline Y-TZP

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Sagel-Ransijn, C.D. and Winnubst, A.J.A. and Burggraaf, A.J. and Verweij, H. (1996) The influence of crystallization and washing medium on the characteristics of nanocrystalline Y-TZP. Journal of the European Ceramic Society, 16 (7). pp. 759-766. ISSN 0955-2219

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Abstract:A zirconia-yttria gel, made by coprecipitation, was treated in six different ways to obtain a nanocrystalline Y-TZP powder: one large gel batch was split into six parts of which one was crystallized in air and the others crystallized either in water with a high pH or in methanol. The batches were subjected to several post treatments. Powder properties and densification characteristics of the six powder batches obtained in this way are described. The aircalcined powder can be sintered to a relative density of about 93% at 1070 °C/10 h, but reproducibility of the sintering characteristics is poor. Optimal hydrothermal treatment of the powder yields a reproducible sintering process, resulting in a relative density of 96% at 1070 °C/10 h and an average grain size between 120 and 130 nm.
Item Type:Article
Copyright:© 1996 Elsevier Science
Faculty:
Science and Technology (TNW)
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Link to this item:http://purl.utwente.nl/publications/12036
Official URL:http://dx.doi.org/10.1016/0955-2219(95)00201-4
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