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ZrO2 and ZrO2-Y2O3 Phase Structure in Films and Powders

Published online by Cambridge University Press:  21 February 2011

R. Caruso ,
N. Pellegri ,
O. De Sanctis ,
M. C. Caracoche  and
P. C. Rivas
R. Caruso
Affiliation:
Ceram. Mat. Lab., FCEIyA - IFIR - UNR, Av. Pellegrini 250, 2000 Rosario, Argentina
N. Pellegri
Affiliation:
Ceram. Mat. Lab., FCEIyA - IFIR - UNR, Av. Pellegrini 250, 2000 Rosario, Argentina
O. De Sanctis
Affiliation:
Ceram. Mat. Lab., FCEIyA - IFIR - UNR, Av. Pellegrini 250, 2000 Rosario, Argentina
M. C. Caracoche
Affiliation:
Physics Department - UNLP, c.c.67, 1900 La Plata, Argentina
P. C. Rivas
Affiliation:
Physics Department - UNLP, c.c.67, 1900 La Plata, Argentina
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Abstract

Zirconia and zirconia-yttria coating films and powders obtained by the sol-gel route using a zirconium alkoxide as starting material and acid and neutral catalytic were investigated by the Perturbed Angular Correlations method (PAC), XRD, DTA and TGA. The hyperfine interaction was measured either during heat treatements or after annealing the samples at increasing temperatures up to 1200°C. All samples have presented a high fraction of crystalline phases at low temperatures. The yttria doped cubic zirconia has not shown the phase transition to the monoclinic phase. Pure zirconia powders produced in neutral hydrolysis and zirconia coatings produced in acid catalysis stabilized the tetragonal phase in a high fraction and up to high temperatures.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 355: Symposium B1 – Evolution of Thin-Film and Surface Structure and Morphology , 1994 , 557
Copyright
Copyright © Materials Research Society 1995

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References

REFERENCES

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