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Iron-stabilized nanocrystalline ZrO2 solid solutions: Synthesis by combustion and thermal stability

Legorreta Garcia, Felipe and De Resende, Valdirene Gonzaga and De Grave, Eddy and Peigney, Alain and Barnabé, Antoine and Laurent, Christophe Iron-stabilized nanocrystalline ZrO2 solid solutions: Synthesis by combustion and thermal stability. (2009) Materials Research Bulletin, vol. 44 (n° 6). pp. 1301-1311. ISSN 0025-5408

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Official URL: http://dx.doi.org/10.1016/j.materresbull.2008.12.014

Abstract

The synthesis of Fe3+-stabilized zirconia by the nitrate/urea combustion route was investigated. Using several characterization techniques, including X-ray diffraction, field-emission-gun scanning electron microscopy and notably Mo¨ ssbauer spectroscopy, it was possible to determine the appropriate amount of urea that allows to obtain a totally stabilized Zr0.9Fe0.1O1.95 solid solution. The nanocrystalline zirconia solid solution is mostly tetragonal, but the presence of the cubic phase could not be ruled out. An indepth study of the thermal stability in air showed that the Fe3+ solubility in the stabilized solid solution starts to decrease at about 875 8C which results in the formation of hematite (possibly containing some Zr4+) at the surface of the zirconia grains and further provokes the progressive transformation into the monoclinic zirconia phase.

Item Type:Article
Additional Information:Thanks to Elsevier editor. The definitive version is available at http://www.sciencedirect.com The original PDF of the article can be found at Materials Research Bulletin website : http://www.sciencedirect.com/science/journal/00255408
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution: Université de Toulouse > Institut National Polytechnique de Toulouse - INPT
Other partners > Ghent University (BELGIUM)
Université de Toulouse > Université Paul Sabatier-Toulouse III - UPS
French research institutions > Centre National de la Recherche Scientifique - CNRS
Laboratory name:
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Deposited By: Nihad Lahdifi
Deposited On:07 May 2010 09:46

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