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| Naji, M. |
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| Motta, Antonella |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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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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| Kočí, Jan | Prague |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ali, M. A. |
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| Rančić, M. |
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| Azevedo, Nuno Monteiro |
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| Rignanese, Gian-Marco |
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Viazzi, Céline
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Publications (6/6 displayed)
- 2011Sintering and conductivity of BaCe0.9Y0.1O2.95 synthesized by the sol-gel methodcitations
- 2009Morphology and structure of YSZ powders: Comparison between xerogel and aerogelcitations
- 2006Synthesis of Yttria Stabilized Zirconia by sol–gel route: Influence of experimental parameters and large scale productioncitations
- 2006Synthesis of Yttria Stabilized Zirconia by sol–gel route: Influence of experimental parameters and large scale productioncitations
- 2006Synthesis by sol-gel route and characterization of Yttria Stabilized Zirconia coatings for thermal barrier applicationscitations
- 2005In situ CCVD synthesis of carbon nanotubes within a commercial ceramic foamcitations
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article
Sintering and conductivity of BaCe0.9Y0.1O2.95 synthesized by the sol-gel method
Abstract
International audience ; Ceramic powders of BaCe0.9Y0.1O2.95 (BCY10) have been prepared by the sol-gel method. Barium and yttrium acetate and cerium nitrate were used as ceramic precursors in a water solution. The reaction process studied by DTA-TG and XRD showed that calcination of the precursor powder at T ≥ 1000 ◦C produces a single perovskite phase. The densification behaviour of green compacts studied by constant heating rate dilatometry revealed that the shrinkage rate was maximal at 1430 ◦C. Sintered densities higher than 95% of the theoretical one were thus obtained below 1500 ◦C. The bulk and additional blocking effects were characterized by impedance spectroscopy in wet atmosphere between 150 and 600 ◦C. A proton conduction behaviour was clearly identified. The blocking effect can be related to a space-charge depletion layer of protons in the vicinity of grain boundaries.