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Rapid Omnidirectional Compaction of Y2O3 Stabilized Tetragonal Zirconia

Published online by Cambridge University Press:  21 February 2011

Alexander Pechenik ,
Aleksander J. Pyzik  and
Donald R. Beaman
Alexander Pechenik
Affiliation:
University of California, Department of Material Science and Engineering, Los Angeles, CA 90024
Aleksander J. Pyzik
Affiliation:
The Dow Chemical Company, Central Research, 1776 Building, Midland, MI 48674
Donald R. Beaman
Affiliation:
The Dow Chemical Company, Michigan Applied Science and Technology Laboratory, 1897 Building, Midland, MI 48667
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Abstract

The Rapid Omnidirectional Compaction (ROC) technique has been applied successfully to the densification of TZP (3 mole % yttria) ceramics at 1260°C. The combination of high pressure (830 MPa) and temperature results in the plastic deformation of the ceramic particles. The extent of deformation, and consequently, the ROCing temperature, can be determined by using hot hardness of the ceramic material as an approximation of the ceramic's yield stress. The materials ROCed at 1260°C are characterized by a grain size of 0.15 gim, a flexure strength of 1300 MPa, a hardness of 1340 kg/mm2, and a fracture toughness of 5.0 MPa m1/2.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 155: Symposium L – Processing Science of Advanced Ceramics , 1989 , 283
Copyright
Copyright © Materials Research Society 1989

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References

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