Boccaccini, Dino2; Frandsen, Henrik Lund1; Blennow Tullmar, Peter1; Reddy Sudireddy, Bhaskar1; Hendriksen, Peter Vang1
1 Department of Energy Conversion and Storage, Technical University of Denmark2 Mixed Conductors, Department of Energy Conversion and Storage, Technical University of Denmark3 Ceramic Engineering & Science, Department of Energy Conversion and Storage, Technical University of Denmark
Creep is the inelastic deformation of a material at high temperatures over long periods of time. It can be defined as timedependent deformation at absolute temperatures greater than one half the absolute melting. Creep resistance is a key parameter for high temperature steel components, e.g. SOFC metal supports, where high corrosion resistance is a major design requirement. The four variables affecting creep rate are strain, time, temperature, and stress level and make creep difficult to quantify. In this work, the creep parameters of a SOFC metal support have been determined for the first time by means of a thermo mechanical analyzer (TMA) for stresses in the range of 1-17 MPa and temperatures between 650-750 °C. The creep parameters of Crofer® 22 APU were also acquired and compared with values obtained from literature to validate the technique.
Proceedings of Fifth European Fuel Cell Technology & Applications Conference (efc 2013): Piero Lunghi Conference, 2013
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5th European Fuel Cell Technology & Applications Conference, 2013