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Dilute Aqueous Dispersions of Zro2 And Al2O3

Published online by Cambridge University Press:  28 February 2011

Evelyn M. De Liso ,
W. Roger Cannon  and
A. Srinivasa Rao
Evelyn M. De Liso
Affiliation:
Rutgers U., Center for Ceramics Research, PO Box 909, Piscataway, NJ 08854
W. Roger Cannon
Affiliation:
Rutgers U., Center for Ceramics Research, PO Box 909, Piscataway, NJ 08854
A. Srinivasa Rao
Affiliation:
Rutgers U., Center for Ceramics Research, PO Box 909, Piscataway, NJ 08854
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Abstract

Colloidal interactions in a heteroparticulate mixture of zirconia and alumina in water were studied for use in a transformation toughened alumina composite. The microelectrophoresis technique was used to measure the mobility of three zirconia powders and an alumina powder. The electro-phoretic mobility and particle size data were used to calculate total potential energy curves. The maximum height of the total potential energy barrier was used to predict the stability of a zirconia/alumina mixture. Theoretical predictions were compared to experimental results obtained from sedimentation and rheology measurements carried out as a function of pH of the dispersion. For a 5 v/o aqueous zirconia/alumina system stable dispersions were made at pH 3 and pH 5.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 60: Symposium L – Defect Properties and Processing of High-Technology Nonmetallic Materials , 1985 , 43
Copyright
Copyright © Materials Research Society 1986

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