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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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Pabst, Willi
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (20/20 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
- 2023Modeling the thermal conductivity of carbon nanotube (CNT) nanofluids and nanocomposites – a fresh restartcitations
- 2022Quasi-laminate and quasi-columnate modeling of dielectric and piezoelectric properties of cubic-cell metamaterialscitations
- 2022Transmittance predictions for transparent alumina ceramics based on the complete grain size distribution or a single mean grain size replacing the whole distributioncitations
- 2022Magnesium fluoride (MgF2) – A novel sintering additive for the preparation of transparent YAG ceramics via SPScitations
- 2021Light scattering models for describing the transmittance of transparent and translucent alumina and zirconia ceramicscitations
- 2021Theoretical study of the influence of carbon contamination on the transparency of spinel ceramics prepared by spark plasma sintering (SPS)citations
- 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
- 2021Computer modeling of systematic processing defects on the thermal and elastic properties of open Kelvin-cell metamaterialscitations
- 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
- 2020Light scattering and extinction in polydisperse systemscitations
- 2020Temperature dependence of Young's modulus and damping of partially sintered and dense zirconia ceramicscitations
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article
Temperature dependence of Young's modulus and the occurrence of an elastic anomaly in porous alumina-mullite composites prepared by starch consolidation casting
Abstract
The temperature dependence of Young's modulus has been measured by impulse excitation up to 1400 °C (heating and cooling) for alumina-mullite composites with 40–60 wt% alumina prepared by starch consolidation casting, after firing at 1570 °C, resulting in materials with high porosities (43–57 %). Using previously determined temperature master curves, both analytical predictions and numerical computations on computer-generated microstructures are compared with experimental data, resulting in excellent agreement for the alumina-mullite composites. Apart from the overall decrease of Young's modulus during heating, an elastic anomaly starting at around 950 °C and cumulating at around 1050 °C is observed in all cases during heating (but not during cooling), and is shown to be stronger with increasing alumina content and porosity. The results are discussed in terms of a “glass phase hypothesis” and a “phase transition hypothesis”, although neither of them provides a satisfactory explanation of the observed phenomenon. © 2023 Elsevier Ltd and Techna Group S.r.l.