Effects of dopant concentration and calcination temperature on the microstructure of Ca-doped ceria nanopowders
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 7...
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| Veröffentlicht in: | Journal of the European Ceramic Society 2008-10, Vol.28 (14), p.2709-2716 |
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| container_issue | 14 |
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| container_title | Journal of the European Ceramic Society |
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| creator | Yan, M. Mori, T. Ye, F. Ou, D.R. Zou, J. Drennan, J. |
| description | 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. |
| doi_str_mv | 10.1016/j.jeurceramsoc.2008.04.016 |
| format | Article |
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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
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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
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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.</abstract><cop>Oxford</cop><pub>Elsevier Ltd</pub><doi>10.1016/j.jeurceramsoc.2008.04.016</doi><tpages>8</tpages></addata></record> |
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| subjects | Applied sciences CeO 2 Cross-disciplinary physics: materials science rheology Electron microscopy Energy Energy. Thermal use of fuels Equipments for energy generation and conversion: thermal, electrical, mechanical energy, etc Exact sciences and technology Fuel cells Materials science Microstructure-final Nanopowders Nanoscale materials and structures: fabrication and characterization Physics Powders-chemical preparation |
| title | Effects of dopant concentration and calcination temperature on the microstructure of Ca-doped ceria nanopowders |
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