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Mechanical properties of tape casted Lanthanum Tungstate for membrane substrate application
Affiliation:1. Forschungszentrum Jülich GmbH, Institute of Energy and Climate Research, IEK-2, D-52425 Jülich, Germany;2. Forschungszentrum Jülich GmbH, Institute of Energy and Climate Research, IEK-1, D-52425 Jülich, Germany;3. Montanuniversität Leoben, Institute of Structural and Functional Ceramics, Peter-Tunner-Straße 5, 8700 Leoben, Austria;4. Materials Center Leoben Forschung GmbH, Roseggerstraße 12, 8700 Leoben, Austria;1. Institute of Energy and Climate Research IEK-1, Forschungszentrum Jülich GmbH, D-52425 Jülich, Germany;2. Ernst Ruska-Centre for Microscopy and Spectroscopy with Electrons ER-C, Forschungszentrum Jülich GmbH, D-52425 Jülich, Germany;3. Central Facility for Electron Microscopy GFE, RWTH Aachen University, 52074 Aachen, Germany;4. Instituto de Tecnología Química, Universidad Politécnica de Valencia-Consejo Superior de Investigaciones Científicas, Av. Naranjos s/n, E-46022 Valencia, Spain;5. Institute of Energy and Climate Research IEK-2, Forschungszentrum Jülich GmbH, D-52425 Jülich, Germany;1. Ernst Ruska-Centre for Microscopy and Spectroscopy with Electrons (ER-C), Forschungszentrum Jülich GmbH, D-52425 Jülich, Germany;2. Institute of Energy and Climate Research (IEK-1), Forschungszentrum Jülich GmbH, D-52425 Jülich, Germany;3. Central Facility for Electron Microscopy (GFE), RWTH Aachen University, Ahornstraße 55, 52075 Aachen, Germany;1. Laboratory of Polymer Engineering LKT-TGM, Wexstrasse 19-23, 1200, Vienna, Austria;2. Research Group Physics of Nanostructured Materials, Faculty of Physics, University of Vienna, Boltzmanngasse 5, 1090, Vienna, Austria;3. Department for Material Physics, Montanuniversität Leoben, Jahnstrasse 12, 8700, Leoben, Austria;4. Isosport, Industriestrasse 2-8, 7000, Eisenstadt, Austria;1. Boreskov Institute of Catalysis, Novosibirsk, Russia;2. Novosibirsk State University, Novosibirsk, Russia;3. Institute of Solid State Chemistry and Mechanochemistry, Novosibirsk, Russia
Abstract:Advances in the development of asymmetric membrane concepts require the development of porosity optimized, mechanically reliable substrate materials. The current study focuses on the characterization of the room temperature mechanical properties of tape casted Lanthanum Tungstate of different porosities for membrane substrate applications. Elastic modulus and hardness are assessed using indentation testing. Characteristic strength and Weibull modulus are determined from data obtained using a ball-on-3-balls test that is particularly advantageous for the rather thin tape casted material. Particular emphasis is placed on the effect of the surface composition onto the fracture strength.
Keywords:Ceramics  Membrane substrate  Porosity  Mechanical properties  Strength  Elastic modulus
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