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Synthesis and Colloidal Processing of Nanocrystalline (Y2O3-Stabilized) ZrO2 Powders by a Surface Free Energy Controlled Process

Published online by Cambridge University Press:  10 February 2011

Detlef Burgard ,
Rüdiger Nass  and
Helmut Schmidt
Detlef Burgard
Affiliation:
Institut für Neue Materialien, Im Stadtwald, Geb. 43, D-66123 Saarbrücken, Germany
Rüdiger Nass
Affiliation:
Institut für Neue Materialien, Im Stadtwald, Geb. 43, D-66123 Saarbrücken, Germany
Helmut Schmidt
Affiliation:
Institut für Neue Materialien, Im Stadtwald, Geb. 43, D-66123 Saarbrücken, Germany
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Abstract

Using the controlled growth technique, nanocrystalline ZrO2 powders have een prepared from solution. By variation of the Y-content (0-8 mol %), redispersable monoclinic, tetragonal or cubic ZrO2 powders with particle sizes between 5 and 10 mn were obtained after crystallization at elevated temperature and pressure. Nanodisperse suspensions of the powders have been used for colloidal processing techniques such as tape casting, slip casting or extrusion. The resulting green bodies with densities of 55 % and average pore sizes of 5 nm could be sintered at temperatures below 1100 °C leading to monoclinic, tetragonal or cubic ZrO2 ceramics.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 432: Symposium S – Aqueous Chemistry and Geochemistry of Oxides , 1996 , 113
Copyright
Copyright © Materials Research Society 1997

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