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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Teocoli, Francesca
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Topics
Publications (9/9 displayed)
- 2017Enhanced densification of thin tape cast Ceria-Gadolinium Oxide (CGO) layers by rheological optimization of slurriescitations
- 2016Novel ceramic processing method for substitution of toxic plasticizerscitations
- 2015Fast mass interdiffusion in ceria/alumina compositecitations
- 2015Modeling constrained sintering of bi-layered tubular structurescitations
- 2015Modeling constrained sintering of bi-layered tubular structurescitations
- 2014Thermo-mechanical properties of SOFC components investigated by a combined method
- 2013Shape distortion and thermo-mechanical properties of dense SOFC components from green tape to sintered body
- 2012Shape distortion and thermo-mechanical properties of SOFC components from green tape to sintering body
- 2012Shape distortion and thermo-mechanical properties of SOFC components from green tape to sintering body
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article
Fast mass interdiffusion in ceria/alumina composite
Abstract
Gadolinium-doped ceria (CGO) presents unique processes at low oxygen partial pressure (pO2 < 1012 atm) and low temperatures (T > 800 C) such as faster mass diffusion, which are not observed in conventional sintering under ambient air conditions. In CGO/Al2O3 composites the resulting effects driven by such mass diffusion are low viscosity flows and high reactivity between phases, indicated by the formation of CeAlO3. This reaction is promoted by the high content of oxygen defects and the chemical reduction of Ce4+ cations to Ce3+ in CGO/Al2O3 composites under low temperature and low pO2. In this work, a comparison is made between sintering CGO/Al2O3 under ambient air conditions and under low pO2, focusing on densification, viscosity and the evolution of the microstructure.