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Spark plasma sintering and characterization of bulk nanostructured fully stabilized zirconia: Part II. Characterization studies

Published online by Cambridge University Press:  01 November 2004

U. Anselmi-Tamburini ,
J.E. Garay ,
Z.A. Munir ,
A. Tacca ,
F. Maglia ,
G. Chiodelli  and
G. Spinolo
U. Anselmi-Tamburini
Affiliation:
Department Chemical Engineering and Materials Science, University of California, Davis, California 95616
J.E. Garay
Affiliation:
Department Chemical Engineering and Materials Science, University of California, Davis, California 95616
Z.A. Munir*
Affiliation:
Department Chemical Engineering and Materials Science, University of California, Davis, California 95616
A. Tacca
Affiliation:
Department of Physical Chemistry, University of Pavia, 27100 Pavia, Italy
F. Maglia
Affiliation:
Department of Physical Chemistry, University of Pavia, 27100 Pavia, Italy
G. Chiodelli
Affiliation:
IENI-CNR, Pavia Branch, 27100 Pavia, Italy
G. Spinolo
Affiliation:
Department of Physical Chemistry, University of Pavia, 27100 Pavia, Italy
*
a) Address all corrsspondence to this author. e-mail: [email protected]
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Abstract

Dense fully stabilized cubic zirconia, sintered by the spark plasma sintering (SPS) method, was characterized through hardness, fracture toughness, and electrical impedance measurements. The effect of sintering temperature on hardness and fracture toughness was evaluated. Samples sintered at 1200 °C for 5 min, which had crystallite size of <100 nm, exhibited the highest hardness. Impedance measurements showed an increase in bulk contribution relative to grain boundaries as sintering temperature is increased. Calculation of the activation energy for conduction gave a value, 1.13 eV, in agreement with previously published results.

Keywords

Electrical propertiesMechanical properties
Type
Articles
Information
Journal of Materials Research , Volume 19 , Issue 11 , November 2004 , pp. 3263 - 3269
Copyright
Copyright © Materials Research Society 2004

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References

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