Microstructure,mechanical behavior and flow resistance of freeze-cast porous 3YSZ substrates for membrane applications |
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| Affiliation: | 1. Forschungszentrum Jülich GmbH, Institute for Energy and Climate Research, IEK-2, 52425 Jülich, Germany;2. Universidad Politécnica de Valencia, Institute of Chemical Technology (ITQ), 46022 Valencia, Spain;1. Department of Mechanical Engineering, National Institute of Technology Meghalaya, Shillong 793003, India;2. Institute of Inorganic Chemistry, Slovak Academy of Sciences, Dúbravska cesta 9, 845 36 Bratislava, Slovakia;1. Micro-optoelectronic Systems Laboratories, Xi’an Technological University, Xi’an 710032, Shaanxi, China;2. Electronic Materials Research Laboratory, Key Laboratory of the Ministry of Education & International Center for Dielectric Research, Xi’an Jiaotong University, Xi’an 710049, Shaanxi, China;3. State Key Laboratory of New Ceramics and Fine Processing, Department of Materials Science and Engineering, Tsinghua University, Beijing 100084, China;1. University of Trento, Department of Industrial Engineering, Via Sommarive 9, 38123 Trento, TN, Italy;2. University of Padova, Department of Industrial Engineering, Via Marzolo 9, 35131 Padova, PD, Italy;1. Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials, School of Materials Science and Technology, China University of Geosciences, Beijing, 100083, China;2. National Academy of Innovation Strategy, Beijing, 100038, China;3. School of Earth Sciences and Resources, China University of Geosciences, Beijing, 100083, China |
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| Abstract: | Freeze-cast porous 3YSZ with different porosities were characterized as mechanical load carrying supports for oxygen transport membrane applications. Porosity influence on mechanical properties, i.e. elastic modulus and fracture stresses was assessed with biaxial ring-on-ring bending tests. The flow resistance was characterized in terms of the pressure drop using different gases to reveal the effect of the porous support on the accessing of the inlet gas flow to the functional dense membrane layer. Both properties were discussed in terms of the influence of porosity and pore structure, and compared with the properties of porous 3YSZ produced via pressing and sintering. |
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| Keywords: | 3YSZ Freeze casting Porosity Mechanical properties Pressure drop |
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