Effects of dopant concentration and calcination temperature on the microstructure of Ca-doped ceria nanopowders

Yan, M., Mori, T., Ye, F., Ou, D. R., Zou, J. and Drennan, J. (2008) Effects of dopant concentration and calcination temperature on the microstructure of Ca-doped ceria nanopowders. Journal of the European Ceramic Society, 28 14: 2709-2716. doi:10.1016/j.jeurceramsoc.2008.04.016


Author Yan, M.
Mori, T.
Ye, F.
Ou, D. R.
Zou, J.
Drennan, J.
Title Effects of dopant concentration and calcination temperature on the microstructure of Ca-doped ceria nanopowders
Journal name Journal of the European Ceramic Society   Check publisher's open access policy
ISSN 0955-2219
Publication date 2008-10-01
Year available 2008
Sub-type Article (original research)
DOI 10.1016/j.jeurceramsoc.2008.04.016
Open Access Status
Volume 28
Issue 14
Start page 2709
End page 2716
Total pages 8
Editor R. J. Brook
Place of publication Kidlington, Oxford, UK
Publisher Elsevier Science
Language eng
Subject C1
970102 Expanding Knowledge in the Physical Sciences
100708 Nanomaterials
Abstract We demonstrate a systematic investigation on the microstructure of the Ca-doped ceria affected by different dopant concentrations and calcination temperatures. It has been shown that nanopowders of Ca-doped ceria have been successfully prepared in a broad dopant concentration region from 5 at.% to 70 at.%. By using various microstructure analysis techniques, the secondary phase has been determined, and the solubility of Ca in ceria has been realized to be less than 20 at.%. It has been also found that the calcination temperature greatly affects the grain growth of the calcined powders, and high temperature calcination treatments would cause lattice relaxation and lead to precipitations, based on which proper calcination conditions are suggested.
Keyword Powders-chemical preparation
Electron microscopy
Microstructure-final
CeO2
Fuel cells
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ
Additional Notes Available online 3 June 2008.

 
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Created: Thu, 19 Mar 2009, 22:06:15 EST by Sally Beard on behalf of Materials