| About this Abstract |
| Meeting |
2021 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advances in Powder and Ceramic Materials Science
|
| Presentation Title |
Flash Sintering of Gadolinium-doped Ceria: Densification and Microstructure |
| Author(s) |
Tarini Prasad Mishra, Viviana Avila, Rubens Roberto Ingraci Neto, Rishi Raj, Olivier Guillon, Martin Bram |
| On-Site Speaker (Planned) |
Tarini Prasad Mishra |
| Abstract Scope |
Ceria based materials have good chemical stability, ionic conductivity and catalytic properties in redox processes. These unique properties make them attractive for applications in various electro-chemical devices. Gadolinium Doped Ceria (GDC) is one of the promising representatives of this class of materials. However, Sintering of GDC is usually done in air at high temperatures, in the range of 1400° C-1600° C, and dwelling time of several hours to achieve almost theoretical density. A promising approach to achieve high densification rate at lowered temperatures is electric field assisted sintering. In this work, Ce0.9 Gd0.1 O1.95-δ (i.e. GDC10, gadolinium-doped ceria, with Gd 10 mol %) has been used for conducting a related flash sintering study. A novel mode of flash sintering known as current rate flash shown to be advantageous as the densification of the material can be better controlled than in conventional flash sintering and the microstructure can be tuned. |
| Proceedings Inclusion? |
Planned: |