| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
High Temperature Electrochemistry: An FMD Symposium Honoring Uday B. Pal
|
| Presentation Title |
Degradation Mechanisms and Mitigation Strategies of YSZ Membranes in Contact with Oxy-Fluorite Flux |
| Author(s) |
Soumendra Basu, JiaPeng Xu, Jicheng Guo, Uday Pal |
| On-Site Speaker (Planned) |
Soumendra Basu |
| Abstract Scope |
The solid oxide membrane (SOM) electrolysis process has the potential to produce primary metals from their oxides in a less expensive and a more environmentally friendly manner. A major challenge that needs to be overcome is extending the life of the yttria stabilized zirconia (YSZ) membranes in contact with an oxy-fluorite flux with dissolved metal oxide. A failure mode of the SOM membrane by the formation of ‘inner cracks’ was studied, and attributed to yttria depletion in the YSZ, leading to phase transformation from cubic to tetragonal phase. A detailed mechanism of the yttrium depleted layer (YDL) formation, and its role in the formation of inner cracks will be discussed. A correlation between YSZ membrane corrosion and the optical basicity of the flux will be presented. The study shows that the life of the YSZ membrane can be extending by controlling the optical basicity of the flux. |
| Proceedings Inclusion? |
Planned: |