Synthesis of nanocrystalline zirconia powders for TZP ceramics by a nitrate–citrate combustion route

A nitrate–citrate combustion route to synthesise nanocrystalline yttria-doped zirconia powders for tetragonal zirconia polycrystal (TZP) ceramics is presented. This route is based on the gelling of nitrate solutions by the addition of citric acid and ammonium hydroxide, followed by an intense combus...

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Bibliographic Details
Published in:Journal of the European Ceramic Society 2000, Vol.20 (2), p.133-138
Main Authors: Juárez, R.E., Lamas, D.G., Lascalea, G.E., Walsöe de Reca, N.E.
Format: Article
Language:English
Subjects:
Applied sciences
Building materials. Ceramics. Glasses
Ceramic industries
Chemical industry and chemicals
Chemistry
Colloidal state and disperse state
Combustion synthesis
Exact sciences and technology
General and physical chemistry
Miscellaneous
Powders
Powders-chemical preparation
Technical ceramics
ZrO 2–Y 2O 3
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Summary:A nitrate–citrate combustion route to synthesise nanocrystalline yttria-doped zirconia powders for tetragonal zirconia polycrystal (TZP) ceramics is presented. This route is based on the gelling of nitrate solutions by the addition of citric acid and ammonium hydroxide, followed by an intense combustion process due to an exothermic redox reaction between nitrate and citrate ions. X-ray diffraction characterisation of powders showed the stabilisation of the tetragonal phase at room temperature because of their small crystallite size (about 10 nm). Dense ceramic samples prepared by uniaxial pressing and sintering in air were also studied.
ISSN:0955-2219
1873-619X
DOI:10.1016/S0955-2219(99)00146-6