About this Abstract |
| Meeting |
MS&T25: Materials Science & Technology
|
| Symposium
|
Advances in Materials and Systems for a Hydrogen Economy
|
| Presentation Title |
Hydrogen - Hydrocarbon Fuel Blends for Turbine Engines: High Temperature Material Issues |
| Author(s) |
Elizabeth J. Opila |
| On-Site Speaker (Planned) |
Elizabeth J. Opila |
| Abstract Scope |
Hydrogen and conventional hydrocarbon fuel blends are proposed for use in turbine engines to reduce carbon emissions in both the aviation and land-based power generation sectors. Hydrogen-based fuels will increase the water vapor content in combustion products relative to current hydrocarbon fuels. Concerns exist regarding durability of turbine hot-section components in high-temperature, high-water vapor content environments. This presentation will address effects of hydrogen fuel induced high-water vapor content combustion gases on current and future hot-section turbine engine material systems including i) Ni-base superalloys with yttria-stabilized zirconia thermal barrier coatings; ii) SiC/BN/SiC ceramic matrix composites with rare earth disilicate environmental barrier coatings; and iii) developmental refractory alloys with advanced thermal/environmental barrier coatings. Water vapor effects on substrate oxidation and coating volatilization mechanisms will be discussed. Additional concerns for infrastructure development and hydrogen embrittlement will also be presented. |