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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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Julian-Jankowiak, Aurélie
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (9/9 displayed)
- 2024Microstructural analysis and mechanical behaviour of oxide/oxide cmcs prepared by continuous tow impregnation
- 2024Impact of additives on the quality of oxide/oxide tow-pregs obtained by continuous fibre impregnationcitations
- 2023Deposition of ultra-refractory sputtered layers for high temperature applications: challenges and some solutions ; Dépôt par pulvérisation de films ultraréfractaires pour des applications hautes températures: Défis et quelques solutions
- 2022Manufacturing and characterisations of hafnia-based materials for aerospace applications
- 2022Chemical and microstructural characterisation of HfO2-Y2O3 ceramics with high amount of Y2O3 (33, 40 and 50 mol. %) manufactured using spark plasma sinteringcitations
- 2020Ultra-High Temperature Ceramics : Developments for hypersonic applicationscitations
- 2018Ultra-High Temperature Ceramics : Developments for hypersonic applications
- 2018Development of Ultra-High Temperature Ceramics: From Monoliths to Compositescitations
- 2015Identification of the mechanical behaviour and damage mechanisms of a Nextel™610/alumina ceramic matrix composite subjected to tensile loading
Places of action
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article
Impact of additives on the quality of oxide/oxide tow-pregs obtained by continuous fibre impregnation
Abstract
This paper focuses on the formulation of aqueous alumina slurries compatible with manufacturing alumina/alumina ceramic matrix composite (CMC) by a continuous tow impregnation process. Two hygroscopic organic plasticizers, sorbitol and glycerol, along with a gelling powder, boehmite, are evaluated for their impact on both slurry behaviour and the quality of impregnated tows. The interest of using glycerol instead of sorbitol is demonstrated, as glycerol exhibits smaller impact on slurry viscosity and stability, while being more hygroscopic and plasticizing, enabling a reduction in organic content. Combining glycerol with boehmite powder improves the surface and the tack of impregnated tows, although boehmite increases slurry viscosity and shear-thinning behaviour. Furthermore, thermal degradations of sorbitol and glycerol are studied through thermogravimetric analysis, to define an autoclave curing cycle for each plasticizer removing, to achieve optimal compaction of tow-pregs and hence reduce the porosity of the resulting CMCs.