| About this Abstract |
| Meeting |
Materials Science & Technology 2019
|
| Symposium
|
Sandphobic Thermal/Environmental Barrier Coatings
|
| Presentation Title |
Army Advances in Sandphobic Thermal/Environmental Barrier Coatings |
| Author(s) |
Mikayla J. Walock, Clara M Mock, Andy Nieto, Andrew Wright, Anindya Ghoshal, Jian Luo, Muthuvel Murugan, Marc Pepi |
| On-Site Speaker (Planned) |
Clara M Mock |
| Abstract Scope |
When operating in particle-laden environments, military rotorcraft are prone to engine damage from the ingestion of sand, dust, and/or ash. These particulates enter the engine, pass through the compressor section to the combustor, where they undergo a phase change into the molten state. Once clear of the combustor, the molten particulates will impinge hot-section components, such as the first-stage nozzle of the high-pressure turbine. To
withstand the temperatures of a gas turbine engine, hot-section components are protected by elaborate film cooling schemes and thermal barrier coatings. The particulates can clog cooling holes, infiltrate protective coatings, and potentially accumulate in the air passages of the first-stage nozzle ring. As a result, engines are pulled from service for unscheduled overhauls or they may suffer catastrophic engine failure. This presentation will summarize Army research efforts to understand and mitigate the phenomena of environmental particulate foreign object damage. |