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Grain-boundary cation diffusion in ceria tetragonal zirconia determined by constant-strain-rate deformation tests |
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| Affiliation: | 1. College of Materials Science and Engineering, Fuzhou University, Fuzhou, Fujian 350108, China;2. Department of Materials Science and Engineering, National United University, Miao-Li 36003, Taiwan, China;1. Chemistry Division, Bhabha Atomic Research Centre, Mumbai 400085, India;2. Materials Science Division, Bhabha Atomic Research Centre, Mumbai 400085, India |
| Abstract: | Ceria tetragonal zirconia polycrystals with a content of 12 mol% ceria (CeTZP) have been tested in compression at constant strain rate between 1150 °C and 1300 °C. An accurate analysis of the stress–strain curves has permitted to determine the value of the grain boundary cation diffusion. The results are compared with those reported in literature for this alloy and yttria tetragonal zirconia polycrystals (YTZP). An isotopic effect is found to correlate both grain boundary diffusion coefficients. |
| Keywords: | Mechanical properties testing Grain boundary diffusion Grain growth Ceria tetragonal zirconia |
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