| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Environmental Degradation of Multiple Principal Component Materials
|
| Presentation Title |
Development of NiCoFeCrAl Based High Entropy Alloys for Hydrogen Fueled Turbine System |
| Author(s) |
Shanshan Hu, Xingru Tan, Tianwei Lu, Aditya Sundar, Yi Wang, Saro San, Michael Gao |
| On-Site Speaker (Planned) |
Shanshan Hu |
| Abstract Scope |
Hydrogen-fueled gas turbines are important for achieving carbon-neutral technology to meet ambitious energy and climate goals. But hydrogen combustion will significantly decrease the life span of current state-of-the-art MCrAlY coated turbines due to higher flame temperature and higher water vapor pressure. Herein, with the aid of machine learning and high throughput CALPHAD calculations, we have successfully developed several NiCoFeCrAl based HEA coatings that demonstrate superior performance in hydrogen combustion environment. The HEA coating facilitates the formation of a protective scale of alpha-alumina to slow down the inward diffusion of oxidizing species and the outward diffusion of metal elements. As a result, the HEA coating possesses ultrahigh corrosion and spallation resistance and can prolong the service lifetime of critical components in hydrogen turbine power system. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
High-Temperature Materials, Computational Materials Science & Engineering, High-Entropy Alloys |