Effect of cold sintering process (CSP) on the electro-chemo-mechanical properties of Gd-doped ceria (GDC). Issue 15 (December 2020)

• Record Type: Journal Article
• Authors: Kabir, Ahsanul; Espineira-Cachaza, Martin; Fiordaliso, Elisabetta Maria; Ke, Daoyao; Grasso, Salvatore; Merle, Benoit; Esposito, Vincenzo
• Is Part Of: Journal of the European Ceramic Society. Volume 40:Issue 15(2020)
• Page Start: 5612
• Page End: 5618
• Publication Date: 2020-12
• Subjects: Gd-doped ceria -- Cold sintering -- Oxygen defects -- Creep -- Electrostriction; Ceramic materials -- Periodicals; Composite materials -- Periodicals; Matériaux céramiques -- Périodiques; Composites -- Périodiques; Ceramic materials; Composite materials; Periodicals; Electronic journals; 666.05
• DOI: 10.1016/j.jeurceramsoc.2020.06.010
• Languages: English
• ISSNs: 0955-2219

Abstract

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 °C. The resultant ceramics exhibits high relative density (∼90 %) with a fine grain size of ∼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 °C. Moreover, a large creep constant, as well as a low elastic modulus and hardness, are also observed in the CSP sample.