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High temperature extrusion behavior of fine-grain ZrO2

Published online by Cambridge University Press:  31 January 2011

B. J. Kellett
B. J. Kellett
Affiliation:
Laboratoire de Céramique, Département des Matériaux, Ecole Polytechnique Fédérale de Lausanne
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Abstract

High temperature forming of a fine-grain ceramic is demonstrated by a series of extrusion experiments with fine-grain ZrO2, 3 mole% Y2O3. Piston velocities, ranging up to 5 mm/min (for a die with an initial diameter of 30 mm and a final diameter of 10 mm), can be achieved at 1500 °C with piston stresses of 70 MPa and graphite paper lubrication. These piston velocities are consistent with a calculation based on the creep behavior of this ceramic. The calculation is based on a model of material flow through the die, consistent with experiments involving internal markers of graphite foil.

Type
Articles
Information
Journal of Materials Research , Volume 5 , Issue 10 , October 1990 , pp. 2165 - 2171
Copyright
Copyright © Materials Research Society 1990

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References

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