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Chemically Derived Yttria-Stabilized Zirconia for Plasma-Spraying

Published online by Cambridge University Press:  28 February 2011

Fawzy G. Sherif
Affiliation:
Akzo Chemicals Inc., Research Department, Dobbs Ferry, NY 10522
H. Herman
Affiliation:
State University of New York at Stony Brook, Department of Materials Science and Engineering, Stony Brook, NY 11794
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Abstract

Yttria-stabilized zirconia powders were prepared by three chemical routes utilizing emulsion hydrolysis techniques. Metal alkoxides, acetates and mixtures of alkoxides and acetates were used as starting materials. Under controlled hydrolysis conditions, particles with different morphology and size were obtained. Spherical or granular particles in the range of 20–60u in diameter were formed. The grain size varied from 0.1–0.2u. The powders were applied successfully as plasma spray coatings. The chemical uniformity was demonstrated by the presence of 100% non-transformable tetragonal zirconia in the powder and in the coating.

Type
Research Article
Copyright
Copyright © Materials Research Society 1990

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References

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