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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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Nečina, Vojtěch
University of Chemistry and Technology
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (15/15 displayed)
- 2024Elastic properties and microstructure evolution of Zn2SnO4-spinel-containing composite ceramics based on tin oxide and zinc oxidecitations
- 2024Temperature dependence of Young's modulus and the occurrence of an elastic anomaly in porous alumina-mullite composites prepared by starch consolidation castingcitations
- 2023Highly textured 3D-printed translucent alumina through pressure-assisted sinteringcitations
- 2023The effect of LiF on preparation of transparent Eu:La2Zr2O7 ceramics by SPScitations
- 2023High-temperature mechanical behavior of partially sintered ceramicscitations
- 2022Magnesium fluoride (MgF2) – A novel sintering additive for the preparation of transparent YAG ceramics via SPScitations
- 2021Microstructure and Young's modulus evolution during re-sintering of partially sintered alumina-zirconia composites (ATZ ceramics)citations
- 2021Grain growth of MgAl2O4 ceramics with LiF and NaF additioncitations
- 2021Transparent MgAl2O4 spinel ceramics prepared via sinter-forgingcitations
- 2021PARTIALLY SINTERED LEAD-FREE CERAMICS FROM PIEZOELECTRIC POWDERS PREPARED VIA CONVENTIONAL FIRING AND SPARK PLASMA SINTERING (SPS) - CHARACTERIZATION OF MICROSTRUCTURE AND DIELECTRIC PROPERTIEScitations
- 2021Sintering aids, their role and behaviour in the production of transparent ceramicscitations
- 2020Influence of the heating rate on grain size of alumina ceramics prepared via spark plasma sintering (SPS)citations
- 2020Highly dense spinel ceramics with completely supressed grain growth prepared via SPS with NaF as a sintering additivecitations
- 2020Comparison of the effect of different alkali halides on the preparation of transparent MgAl2O4 spinel ceramics via spark plasma sintering (SPS)citations
- 2020Temperature dependence of Young's modulus and damping of partially sintered and dense zirconia ceramicscitations
Places of action
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article
Influence of the heating rate on grain size of alumina ceramics prepared via spark plasma sintering (SPS)
Abstract
The dependence of grain size on the heating rate has been investigated for alumina ceramics prepared via spark plasma sintering (SPS). For this purpose, the local grain size has been determined via position-dependent microscopic image analysis, using two independent grain size measures (mean chord length and Jeffries grain size). For alumina ceramics prepared with heating rates between 5 and 100 degrees C/min (pressure 80 MPa, maximum temperature 1300 degrees C) it is found that for higher heating rates the grain size is smaller. However, the microstructural non-uniformity is so large that any grain size determination that does not take this non-uniformity into account becomes meaningless, because grain size gradients from the specimen periphery to the center are larger than the differences in grain size due to different heating rates. Temperature and pressure gradients are discussed as the most plausible reasons for the microstructural non-uniformity.