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Preparation of A12O3-ZrO2 Composites by Adjustment of Surface Chemical Behavior

Published online by Cambridge University Press:  28 February 2011

S. Baik ,
A. Bleier  and
P. F. Becher
S. Baik
Affiliation:
Structural Ceramics Group, Metals and Ceramics Division, Oak Ridge National Laboratory, P. O.Box X, Oak Ridge, Tennessee 37831
A. Bleier
Affiliation:
Structural Ceramics Group, Metals and Ceramics Division, Oak Ridge National Laboratory, P. O.Box X, Oak Ridge, Tennessee 37831
P. F. Becher
Affiliation:
Structural Ceramics Group, Metals and Ceramics Division, Oak Ridge National Laboratory, P. O.Box X, Oak Ridge, Tennessee 37831
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Abstract

Aqueous colloidal routes for processing binary suspensions containing Al 2 O 3 and ZrO2 were designed and tested in order to achieve homogeneous microstructures. Effects of particle size and size ratio of each component, pH, and electrolyte concentration of composite suspensions on sedimentation, green density, and ZrO2 distribution in sintered microstructures were examined. The pH conditions for inhibiting differential sedimentation without impairing green density were optimized. Overall suspension and coagulation behavior for these composite systems were explained using the DLVO approach. Optimum balance of colloidal and gravitational forces occurred when the secondary minimum heterocoagulation was maximized.

Type
Articles
Information
MRS Online Proceedings Library (OPL) , Volume 73: Symposium H – Better Ceramics Through Chemistry II , 1986 , 791
Copyright
Copyright © Materials Research Society 1986

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References

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