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| Naji, M. |
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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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| 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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| Ali, M. A. |
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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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Steil, Marlu César
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Topics
Publications (9/9 displayed)
- 2021Flash sintering of cationic conductive ceramics: A way to build multilayer systemscitations
- 2020Electrochemical Flash Sintering: A New Tool to Obtain All Solid-State Batteries in Few Secondscitations
- 2019Long-term stability of iron-doped calcium titanate CaTi0.9Fe0.1O3−δ oxygen transport membranes under non-reactive and reactive atmospherescitations
- 2018Oxygen pressure dependence of the ionic conductivity of iron-doped calcium titanatecitations
- 2016Preparation, characterization and sintering of yttrium-doped ThO2 for oxygen sensors applicationscitations
- 2015Flash sintering incubation in Al2O3/TZP compositescitations
- 2012Ionically conducting ceramics for soot oxidation. Mechanistic study with O-18(2) isotopic exchangecitations
- 2005Thermal stability and preparation of dense membrane ceramics of BIMEVOXcitations
- 2005Impedance study of the microstructure dependence of the electrical properties of BIMEVOXescitations
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article
Flash sintering incubation in Al2O3/TZP composites
Abstract
The flash sintering incubation process was characterized with Al2O3/TZP composites in isothermal furnace experiments. The compositions in tetragonal zirconia, TZP and Al2O3 were 0, 20, 40 and 60 vol.% of Al2O3. AC electrical field E-0 (1000 Hz) of 100 or 200 V/cm was used. The current density was limited at 10 or 20 A/cm(2), and the pre-heating temperatures were 900, 1000 and 1100 degrees C. The flash phenomenon depends on the overall conductivity of the sample. For a constant electrical field, the incubation time only depends on the sample overall conductivity whatever its temperature or composition. The power density supplied to the sample is the key parameter. The incubation time is affected by the heat losses, which mainly occur by thermal conduction through the electrode contacts, as evidenced by the marked influence of the sample geometry. A simple energy balance equation accounts for the observed current variations.