About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Environmental Degradation of Multiple Principal Component Materials
|
| Presentation Title |
Design and evaluation of low-cost multicomponent rare earth disilicate environmental barrier coatings |
| Author(s) |
Richard P. Oleksak, Casey S. Carney, Shiqiang Hao, Michael C. Gao, Kenneth A. Kane |
| On-Site Speaker (Planned) |
Richard P. Oleksak |
| Abstract Scope |
Silicon carbide based ceramic matrix composites (CMCs) are a potential next-generation structural material for pushing the operating temperature of gas turbine engines. Key to their success is development of environmental barrier coatings (EBCs) for protecting CMCs against the harsh turbine combustion environments. EBCs based on the multicomponent rare earth disilicate system are potentially promising, however further work is needed to balance several important factors such as intrinsic material properties, manufacturability, and cost. Herein we describe progress in the design and evaluation of low-cost multicomponent rare earth disilicate based EBCs. Bulk material properties are measured and compared with predictions from first principles calculations, while coatings are evaluated against baseline ytterbium disilicate using a specialized laser-based rig capable of closely simulating the operating conditions of gas turbine engines. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Environmental Effects, High-Temperature Materials, |