Journal
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
Volume 40, Issue 15, Pages 5653-5661Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.jeurceramsoc.2020.07.044
Keywords
Proton conductor; Membrane; Fracture toughness; Mechanical properties; Indentation; Pillar splitting
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Funding
- China Scholarship Council (CSC)
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Proton-conducting membranes have great potential for applications in proton conducing membrane reactors for the production of commodity chemicals or synthetic fuels as well as for use in solid oxide fuel cells. However, to ensure the long-term structural stability under operation relevant conditions, the mechanical properties of the membrane materials need to be characterized. BaCe0.65Zr0.2Y0.15O3-delta is of particular interest due to its proven functional properties. In this research work, the mechanical properties of BaCe0.65Zr0.2Y0.15O3-delta were determined on different length scales using different methods including impulse excitation, indentation testing, and micropillar splitting. A detailed microstructural analysis of pillars revealed that irregular results are caused by pores causing crack deflection and complex crack patterns.
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