Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7734295 | Journal of Power Sources | 2015 | 7 Pages |
Abstract
This study investigates the impact of the temperature on the strength and the fracture toughness of different zirconia electrolytes as well as the change of the elastic constants. 3YSZ and 6ScSZ materials are characterised regarding the influence of sub critical crack growth (SCCG) as one of the main lifetime limiting effects for ceramics at elevated temperatures. In addition, the reliability of different zirconia tapes is assessed with respect to temperature and SCCG. It was found that the strength is only influenced by temperature through the change in fracture toughness. SCCG has a large influence on the strength and the lifetime for intermediate temperature, while its impact becomes limited at temperatures higher than 650 °C. In this context the tetragonal 3YSZ and 6ScSZ behave quite different than the cubic 10Sc1CeSZ, so that at 850 °C it can be regarded as competitive compared to the tetragonal compounds.
Related Topics
Physical Sciences and Engineering
Chemistry
Electrochemistry
Authors
Felix Fleischhauer, Raul Bermejo, Robert Danzer, Andreas Mai, Thomas Graule, Jakob Kuebler,