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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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Khajavi, Peyman
Technical University of Denmark
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (11/11 displayed)
- 2024High-temperature degradation of tetragonal zirconia in solid oxide fuel and electrolysis cells:A critical challenge for long-term durability and a solutioncitations
- 2024Mitigating low-temperature hydrothermal degradation of 2 mol% yttria stabilised zirconia and of 3 mol% yttria stabilised zirconia/nickel oxide by calcium oxide co-doping and two-step sinteringcitations
- 2024High-temperature degradation of tetragonal zirconia in solid oxide fuel and electrolysis cellscitations
- 2024A solid oxide cell resistant to high-temperature isothermal degradation
- 2022Planar proton-conducting ceramic cells for hydrogen extractioncitations
- 2022Planar proton-conducting ceramic cells for hydrogen extraction:Mechanical properties, electrochemical performance and up-scalingcitations
- 2020(Invited) Advanced Alkaline Electrolysis Cells for the Production of Sustainable Fuels and Chemicals
- 2020Double Torsion testing of thin porous zirconia supports for energy applications: Toughness and slow crack growth assessmentcitations
- 2018Improving the mechanical properties and stability of solid oxide fuel and electrolysis cells
- 2018A Ba-free sealing glass with a high CTE and excellent interface stability optimized for SOFC/SOEC stack applicationscitations
- 2018A Ba-free sealing glass with a high CTE and excellent interface stability optimized for SOFC/SOEC stack applicationscitations
Places of action
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article
Double Torsion testing of thin porous zirconia supports for energy applications: Toughness and slow crack growth assessment
Abstract
Thin, porous zirconia-based ceramic components are of high interest in energy application devices where they are used as structural ceramics. Mechanical reliability of such devices is not only dependent on the fracture toughness of the ceramic components, but also on their sensitivity to slow crack growth (SCG). In this work, the fracture toughness and SCG behavior of porous (4.5–45.5%) and thin (∼ 0.25 mm) 3Y-TZP ceramics are investigated using the Double Torsion method. The analysis of the double torsion data, previously developed for dense materials, was here assessed and adapted. The compliance of the samples was observed to change linearly with crack length and the measured stress intensity factor was dependent on crack length, as for dense materials. This dependency decreased by increasing the sample porosity. For all materials, the ratio of the SCG threshold to fracture toughness was of 0.56 ± 0.06.