Journal article
Effect of cold sintering process (CSP) on the electro-chemo-mechanical properties of Gd-doped ceria (GDC)
Publication Details
Authors: | Kabir, A.; Espineira-Cachaza, M.; Fiordaliso, E.; Ke, D.; Grasso, S.; Merle, B.; Esposito, V. |
Publisher: | ELSEVIER SCI LTD |
Publication year: | 2020 |
Journal: | Journal of the European Ceramic Society |
Pages range : | 5612-5618 |
Volume number: | 40 |
Issue number: | 15 |
Start page: | 5612 |
End page: | 5618 |
Number of pages: | 7 |
ISSN: | 0955-2219 |
DOI-Link der Erstveröffentlichung: |
Abstract
In this report, the effect of the cold sintering process (CSP) on the electro-chemo-mechanical properties of 10 mol % Gd-doped ceria (GDC) is investigated. High purity nanoscale GDC powder is sintered via a cold sintering process (CSP) in pure water followed by post-annealing at 1000 degrees C. The resultant ceramics exhibits high relative density (similar to 90 %) with a fine grain size of similar to 100 nm. This sample illustrates comparable electrochemical properties at intermediate-high temperatures and electromechanical properties at room temperature to the material prepared via conventional firing, i.e., sintering in the air at 1450 degrees C. Moreover, a large creep constant, as well a low elastic modulus and hardness, are also observed in the CSP sample.
In this report, the effect of the cold sintering process (CSP) on the electro-chemo-mechanical properties of 10 mol % Gd-doped ceria (GDC) is investigated. High purity nanoscale GDC powder is sintered via a cold sintering process (CSP) in pure water followed by post-annealing at 1000 degrees C. The resultant ceramics exhibits high relative density (similar to 90 %) with a fine grain size of similar to 100 nm. This sample illustrates comparable electrochemical properties at intermediate-high temperatures and electromechanical properties at room temperature to the material prepared via conventional firing, i.e., sintering in the air at 1450 degrees C. Moreover, a large creep constant, as well a low elastic modulus and hardness, are also observed in the CSP sample.
Keywords
Cold sintering, Creep, Electrostriction, Gd-doped ceria, Oxygen defects
