Effect of water suspension pH on thermomechanical properties of Al2O3-10 wt% ZrO2 ceramics

The pH of water suspensions strongly influences the agglomerate size of oxide powders. The maximum agglomerate size corresponds to the isoelectric point of the suspensions. Alumina ceramics so prepared are characterised by an increase in monoclinic zirconia content and a decrease in resistance to fr...

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Bibliographic Details
Published in:Journal of the European Ceramic Society 1991, Vol.7 (4), p.237-241
Main Author: TOMASZEWSKI, H
Format: Article
Language:English
Subjects:
Applied sciences
Building materials. Ceramics. Glasses
Ceramic industries
Chemical industry and chemicals
Exact sciences and technology
Structural ceramics
Technical ceramics
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Summary:The pH of water suspensions strongly influences the agglomerate size of oxide powders. The maximum agglomerate size corresponds to the isoelectric point of the suspensions. Alumina ceramics so prepared are characterised by an increase in monoclinic zirconia content and a decrease in resistance to fracture. Increases in the acidity or alkalinity of the suspension, equivalent to an increase in the surface grain charge, increases tetragonal zirconia content and improves properties. 11 refs.
ISSN:0955-2219
1873-619X
DOI:10.1016/0955-2219(91)90025-U