Nanocrystalline Powders Based on ZrO2 for Biomedical Applications and Power Engineering

An 80 mass% ZrO^sub 2^ -- 20 mass% Al^sub 2^O^sub 3^ powder was produced using a complex method which integrates sol-gel technology and hydrothermal synthesis. The specific surface areas of the powder varied from 39 to 5.3 m^sup 2^/g depending on the thermal treatment conditions. Metastable F-ZrO^su...

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Bibliographic Details
Published in:Powder metallurgy and metal ceramics 2002-11, Vol.41 (11-12), p.558-563
Main Authors: Shevchenko, Alexey V, Dudnik, Elena V, Ruban, Alexey K, Red'ko, Viktor P, Lopato, Lidiya M
Format: Article
Language:English
Subjects:
Aluminum oxide
Annealing
Ceramic powders
Ceramic tools
Ceramics
Powder metallurgy
Specific surface
Zirconium dioxide
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Summary:An 80 mass% ZrO^sub 2^ -- 20 mass% Al^sub 2^O^sub 3^ powder was produced using a complex method which integrates sol-gel technology and hydrothermal synthesis. The specific surface areas of the powder varied from 39 to 5.3 m^sup 2^/g depending on the thermal treatment conditions. Metastable F-ZrO^sub 2^ formed after powder annealing at 400°C. The phase transformation F-ZrO^sub 2^ [arrow right] T-ZrO^sub 2^ (traces of M-ZrO^sub 2^) occurred under powder thermal treatment from 700 to 1000°C. Only Θ-Al^sub 2^O^sub 3^ was detected under experimental conditions. The powder was characterized by sintering activity. Operating the processes under powder thermal treatment in the ZrO^sub 2^ -- Y^sub 2^O^sub 3^ -- CeO^sub 2^ -- Al^sub 2^O^sub 3^ system will allow one to produce a variety of ceramic microstructures from fine-grained to "self-reinforced." These powders can be used in manufacturing surgical cutting tools as well as in ceramic passive bioimplants and solid electrolytes for fuel elements.[PUBLICATION ABSTRACT]
ISSN:1068-1302
1573-9066
DOI:10.1023/A:1022962200154