Early-stage sintering mechanisms of Fe-doped CeO2
Source abstract
Abstract
Cerium oxide is a very useful base material used as catalyst supports, ion conductors and gas sensors. It is also well known that ceria-based materials are difficult to densify below 1500°C. However, a small amount of Fe doping obviously promotes the densification rate and reduces the sintering temperatures. In this study, the early stage sintering mechanisms of undoped and Fe-doped CeO2 were investigated, based on two sintering models. We confirm that pure CeO2 exhibits volume-diffusion controlled sintering, while a viscous flow mechanism dominates the early stage sintering of Fe-doped CeO2.
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Research context
OpenAlex topics: Catalytic Processes in Materials Science · Advanced materials and composites · Advancements in Solid Oxide Fuel Cells
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