کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1475922 | 991135 | 2008 | 8 صفحه PDF | دانلود رایگان |
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.
Journal: Journal of the European Ceramic Society - Volume 28, Issue 14, October 2008, Pages 2709–2716