| About this Abstract |
| Meeting |
2023 TMS Annual Meeting & Exhibition
|
| Symposium
|
Phase Stability in Extreme Environments
|
| Presentation Title |
Steam Oxidation Behavior of Environmental Barrier Coatings |
| Author(s) |
Mackenzie Ridley, Ken Kane, Bruce Pint |
| On-Site Speaker (Planned) |
Mackenzie Ridley |
| Abstract Scope |
Environmental barrier coatings (EBCs) are required for application of SiC ceramic matrix composites (CMCs) as components in combustion turbines to achieve increased efficiencies from higher fuel burn temperatures. EBC research has often focused on Yb2Si2O7 EBCs due to its high-temperature phase stability, steam resistance, and thermal expansion match with SiC. In this work, various EBC chemistries were deposited onto SiC and cycled in high-temperature steam environments to determine oxidation resistance above 1250°C. Relationships between EBC chemistry, coating thickness, thermally grown oxide microstructure, and eventual coating spallation will be addressed. This research was funded by the Advanced Turbine Program‚ Office of Fossil Energy‚ Department of Energy. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
High-Temperature Materials, Surface Modification and Coatings, Ceramics |