Synthesis and Characterization of Nanocrystalline YSZ Powder by Smoldering Combustion Synthesis

Kaus, Ingeborg; Dahl, Paul Inge; Mastin, Johann; Grande, Tor; Einarsrud, Mari-Ann

doi:https://doi.org/10.1155/JNM/2006/49283

Journal of Nanomaterials

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Volume 2006 | Article ID 049283 | https://doi.org/10.1155/JNM/2006/49283

Synthesis and Characterization of Nanocrystalline YSZ Powder by Smoldering Combustion Synthesis

Ingeborg Kaus,¹Paul Inge Dahl,¹Johann Mastin,¹Tor Grande,¹and Mari-Ann Einarsrud¹

Academic Editor: Michael Z. Hu

Received22 Aug 2005

Revised05 May 2006

Accepted09 May 2006

Published31 Jul 2006

Abstract

Nanocrystalline yttria-stabilized zirconia (YSZ) powders with 8 mol% Y₂O₃ have been produced using smoldering combustion synthesis with glycine as fuel and nitrate as oxidizer. The YSZ powders prepared by using different glycine to nitrate ratios (0.20–1.0) have been characterized by X-ray diffraction (crystallite size), thermogravimetry, infrared spectroscopy, surface area analysis, transmission electron microscopy, and dilatometry to determine the parameters giving the powder the best properties when it comes to densification properties. The influence of calcination temperature on crystallite size, surface area, and carbonate species remaining from the smoldering combustion reaction has been studied especially for the G/N ratio of 0.23 to reveal the optimal synthesis conditions. A G/N ratio of 0.23 and calcination in the range 650–900^ºC in oxygen flow gave high quality powder with a crystallite size less than 10 nm. Densities of sintered bodies exhibit an increase for calcination temperatures above 600^ºC, where most of the residual carbonate species has been removed.

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Copyright © 2006 Ingeborg Kaus et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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