Governing Parameters Influencing CMAS Adhesion and Infiltration into Environmental/Thermal Barrier Coatings in Gas Turbine Engines
Loading...
Authors
Ghoshal, Anindya
Walock, Michael J.
Murugan, Muthuvel
Mock, Clara
Bravo, Luis
Pepi, Marc
Nieto, Andy
Wright, Andrew
Luo, Jian
Jain, Nishan
Subjects
Advisors
Date of Issue
2021-06
Date
2021-06
Publisher
American Society of Mechanical Engineers (ASME)
Language
Abstract
Sand particulate ingestion into modern gas turbine engines for fixed wing and vertical lift aircraft is a significant challenge for both military and civilian missions. ARL as part of a DoD funded Laboratory University Collaborative Initiative (LUCI) and Vannevar Bush Fellowship at UCSD are investigating the governing parameters that primarily influences the CMAS adhesion kinetics and infiltration on the standard Yttria Stabilized Zirconia (YSZ) as part of metallic single crystal Nickel superalloys TBC and SiC/SiC CMC T/EBCs. Current research shows various parameters including CMAS viscosity, porosity, adhesion strength, contact angle (wettability factor), geological factors affecting sand formation, coating and structural substrate roughness and surface temperature, internal flow Reynolds number, temperature, pressure, Mach number, boundary layer and bleed air, coating process (columnar vs splat morphology), tortuosity factor et al affects the CMAS adhesion and infiltration. This paper is a summary of our current research to identify and study the governing parameters that affects the CMAS formation, adhesion and infiltration and the underlying interfaces between CMAS and T/EBC, bond coat and the structural substrate. This work is aligned with Army Modernization Priority Future Vertical Lift and PEO Aviation Advanced Turbine Engine (ATE) Program.
Type
Conference Paper
Description
ASME Turbo Expo 2019: Turbomachinery Technical Conference and Exposition GT2019 June 17-21, 2019, Phoenix, Arizona, USA
The article of record as published may be found at https://doi.org/10.1115/GT2019-92000
The article of record as published may be found at https://doi.org/10.1115/GT2019-92000
Series/Report No
Department
Mechanical and Aerospace Engineering (MAE)
Organization
Identifiers
NPS Report Number
Sponsors
Anindya Ghoshal’s collaboration with Dr. Jian Luo at University of California, San Diego is partially funded through Laboratory University Collaborative Initiative [LUCI] Fellowship.
Funding
Part of this work was accomplished under a Cooperative Agreement with Oak Ridge Associated Universities (W911NF-12-2-0019).
Format
11 p.
Citation
Ghoshal, Anindya, et al. "Governing parameters influencing CMAS adhesion and infiltration into environmental/thermal barrier coatings in gas turbine engines." Turbo Expo: Power for Land, Sea, and Air. Vol. 58677. American Society of Mechanical Engineers, 2019.
Distribution Statement
Rights
This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.