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1 Department of Energy Conversion and Storage, Technical University of Denmark 2 Mixed Conductors, Department of Energy Conversion and Storage, Technical University of Denmark 3 Department of Wind Energy, Technical University of Denmark
In the development of structural and functional ceramics for high temperature electrochemical conversion devices such as solid oxide fuel cells, their mechanical properties must be tested at operational conditions, i.e. at high temperature and controlled atmospheres. Furthermore, characterization of the strength of ceramic components requires testing of a high number of samples due to stochastic failures. Successive heating and testing a single sample is very time consuming and consequently this hinders thorough studies with sufficient samples at operational conditions. This work presents a methodology for testing multiple samples at operational conditions providing a high throughput and thus the possibility achieve high reliability. Optical methods are used to measure deformations contactless, frictionless load measuring is achieved, and multiple samples are handled in one heat up. The methodology is validated at room temperature, and exemplified by measurement of the strength of solid oxide fuel cell anode supports at 800 C. © 2014 Elsevier B.V. All rights reserved.
Journal of Power Sources, 2014, Vol 258, p. 195-203
Strength; Ceramics; High temperature; Controlled atmosphere; Weibull statistics
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