Abstract
Different mechanical testing methods have been used to assess the elastic behavior of the mixed ion electron conducting perovskite Ba0.5Sr0.5Co0.8Fe0.2O3−δ (BSCF). Although the main aim is the comparison of the testing techniques for ceramic material in general, experiments have been performed at RT and up to 900 °C to illustrate the capabilities of the utilized methods for a perovskite with a stiffness anomaly. BSCF specimens in disc shape and tubular geometry provided by different suppliers were tested in biaxial bending by ring-on-ring testing and under uniaxial stress in O-ring and under compression loading. The elastic modulus was determined as a function of temperature up to 900 °C. In addition, the room temperature elastic modulus was measured using depth-sensitive indentation.
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Acknowledgements
The work was funded by the German Helmholtz Gemeinschaft as part of the research activities in the MEM-BRAIN Alliance. The authors would like to express their gratitude to R. Kriegel, I. Voigt (HITK) and W. Meulenberg, S. Baumann (FZ Jülich, IEF-1) for providing the BSCF specimens and B. Rutkowski for the optical micrograph of the HITK tube.
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Malzbender, J., Huang, B., Mönch, J. et al. A comparison of results obtained using different methods to assess the elastic properties of ceramic materials exemplified for Ba0.5Sr0.5Co0.8Fe0.2O3−δ . J Mater Sci 45, 1227–1230 (2010). https://doi.org/10.1007/s10853-009-4069-4
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DOI: https://doi.org/10.1007/s10853-009-4069-4