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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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Mechnich, Peter
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (8/8 displayed)
- 2023Protective Coatings for Enhanced Performance of Oxide-Oxide Composites
- 2023Rapid Evaluation of the Particle-Erosion Resistance of Al2O3 Ceramics, Composites, and Coatings using a Resonant Acoustic Mixercitations
- 2023Single and multi-component REDS systems for TEBC application: Synthesis and study of high temperature interaction with CMAS
- 2023Assessment of Oxide Based Ceramic Matrix Composites as Hot Particle Transport System Components for Solar Thermal Applications
- 2023Potential of Corundum and Metallurgical slags as filler materials for a molten-salt based thermocline storage concept
- 2023Effect of TEBC on the Performance of Al2O3/Al2O3 Ceramic Matrix Composites
- 2023Novel magnetron sputtered yttrium-silicon-iron oxide as CMAS resistant top coat material for environmental barrier coatingscitations
- 2020Novel magnetron sputtered ceramic YSiFe oxide as CMAS-resistant coatings for environmental barrier coatings.
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document
Single and multi-component REDS systems for TEBC application: Synthesis and study of high temperature interaction with CMAS
Abstract
Multi-component rare earth disilicates RE2Si2O7 (REDS) are considered as promising materials to be used as thermal environmental barrier coatings (TEBCs) to protect ceramic matrix composites (CMCs) against environmental degradation. The combination of multiple cations in a single phase is expected to decrease the overall thermal conductivity of the material. In addition, they can also increase the phase stability at high temperatures, toughness, inertness to water vapor attack, and stability against molten deposits (CMAS) attack. In this work, single and multi-component rare earth disilicates have been successfully synthesized using a novel and quick synthesis method through solid-state reaction. The main goal of this study is to understand the thermochemical interactions of single cation (Y, Yb, Er, Ho, Lu, and Sc) disilicates and multiple cation disilicates e.g. (Y,Yb)2Si2O7, (Y,Yb,Er)2Si2O7, (Y,Yb,Er,Ho)2Si2O7 with CMAS at 1350 and 1400°C for 1h. Results have shown that the synthesized powders exhibit formation of a single monoclinic phase (β or γ types) both in single and multi-component disilicate systems. The CMAS interaction resulted in formation of REDS reprecipitates (Yb, Lu, Sc), apatite (Er, Ho, Y), and diopside (Sc) as reactive crystallization products. Finally, the multiple cation effect on the formation of the reaction products will be discussed.