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A Review of the Aqueous Chemistry of the Zirconium - Water System to 200°C

Published online by Cambridge University Press:  10 February 2011

James.H. Adair ,
Henrik G. Krarup ,
Sridhar Venigalla  and
Takayuki Tsukada
James.H. Adair
Affiliation:
Materials Science and Engineering, University of Florida, Gainesville, FL 32611-6400, [email protected]
Henrik G. Krarup
Affiliation:
Materials Science and Engineering, University of Florida, Gainesville, FL 32611-6400, [email protected]
Sridhar Venigalla
Affiliation:
Cabot Performance Materials, Boyertown, PA 19512
Takayuki Tsukada
Affiliation:
Japan Energy Corp., Niizo-Minami 3-17-35, Toda, Saitama 335, Japan
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Abstract

The aqueous chemistry of the Zr-H2O system is reviewed. It is shown that the thermodynamically stable solid phase for the Zr-H2O system at 25°C is the monoclinic phase. After a review of the chemistry of the pure material in water, a summary of the solution equilibria of the Zr-H2O system is presented followed by a discussion of the aqueous phase stability of the monoclinic and tetragonal phases of the pure ZrO2 system. Last, a discussion of the phase stability of the complex metal oxides, particularly the Y2O3-containing TZP in aqueous solution will be reviewed. It will be shown that the phase stability for the complex metal oxide-zirconia systems may be best understood as corrosion with the alloying agent (e.g., Y2O3) subject to leaching from a zirconia-rich interface.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 432: Symposium S – Aqueous Chemistry and Geochemistry of Oxides , 1996 , 101
Copyright
Copyright © Materials Research Society 1997

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