Metal ceramic composites with a nanocrystalline zirconia matrix prepared by high-pressure compaction

Powder composites composed of a nanocrystalline ZrO^sub 2^ + 3 mol.% Y^sub 2^O^sub 3^ and 20 wt.% Ni, Cr, and Ta are prepared by a high-pressure compaction technique. In compacted composite powders, the mechanisms of densification are shown to be controlled by plastic deformation or degradation of m...

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Bibliographic Details
Published in:Refractories and industrial ceramics 2003-07, Vol.44 (4), p.227-231
Main Authors: PRIMISLER, V. B, KONSTANTINOVA, T. E, DANILENKO, I. A, VOLKOVA, G. K, SAAK'YANTS, V. P, PEREKRESTOVA, L. D
Format: Article
Language:English
Subjects:
Applied sciences
Building materials. Ceramics. Glasses
Ceramic industries
Cermets, ceramic and refractory composites
Chemical industry and chemicals
Chromium
Compacting
Cross-disciplinary physics: materials science
rheology
Exact sciences and technology
Materials science
Metal particles
Miscellaneous
Nanocrystals
Nickel
Other materials
Physics
Plastic deformation
Specific materials
Technical ceramics
Transformations
Zirconium dioxide
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Summary:Powder composites composed of a nanocrystalline ZrO^sub 2^ + 3 mol.% Y^sub 2^O^sub 3^ and 20 wt.% Ni, Cr, and Ta are prepared by a high-pressure compaction technique. In compacted composite powders, the mechanisms of densification are shown to be controlled by plastic deformation or degradation of metallic particles. The presence of a metallic component does not affect the growth rate of monoclinic phase under the stress-induced T [arrow right] M transformation conditions leading to the increased content of M-phase.[PUBLICATION ABSTRACT]
ISSN:1083-4877
1573-9139
DOI:10.1023/A:1027379431231