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A Study of Rhombohedral Phase in Y2 O3 -Partially Stabilized Zirconia

Published online by Cambridge University Press:  25 February 2011

Jukishige Kitano ,
Y. Mori ,
A. Ishitani  and
T. Masaki
Jukishige Kitano
Affiliation:
Toray Research Center, IncOtsu, Shiga, 520, Japan
Y. Mori
Affiliation:
Toray Research Center, IncOtsu, Shiga, 520, Japan
A. Ishitani
Affiliation:
Toray Research Center, IncOtsu, Shiga, 520, Japan
T. Masaki
Affiliation:
Technical Development Department, Toray Industries, Inc., Otsu, Shiga, 520, Japan
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Abstract

Tetragonal to rhombohedral phase transformation was studied by X-ray diffraction technique on the ground surfaces of tetragonal zirconia polycrystals (Y-TZP) and partially stabilized zirconia (Y-PSZ) with 2.0 to 5.0 mol% Y2 O3 contents prepared by hot isostatic pressing. The rhombohedral phase increased with increase of Y2 O3 content from 2.0 to 5.0 mol%, and also with the increase of HIPing temperature from 1400 to 1600°C. The stability of the phase was also studied with regard to the surface finish and annealing. The subsequent heat treatment of the samples was found to promote the reverse rhombohedral to tetragonal transformation.

Type
Articles
Information
MRS Online Proceedings Library (OPL) , Volume 78: Symposium E – Advances in Structural Ceramics , 1986 , 17
Copyright
Copyright © Materials Research Society 1987

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References

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