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Meeting Materials Science & Technology 2020
Symposium Coatings to Protect Materials from Extreme Environments
Presentation Title Cyclic Steam Oxidation of Single Layer Ytterbium Disilicate Environmental Barrier Coatings
Author(s) Kenneth Kane, Padraig Stack, Eugenio Garcia, Sanjay Sampath, Bruce Pint
On-Site Speaker (Planned) Kenneth Kane
Abstract Scope Environmental barrier coatings (EBCs) have become an industry standard for protecting SiC-based ceramic matrix composites (CMCs) in water vapor containing combustion environments, primarily being utilized as post-combustion stationary components in aerospace jet turbines. The current generation of EBCs are temperature limited by the melting point of the silicon bond coat, 1414C. The next generation of EBCs without a bond coating are now being evaluated for industrial gas turbine applications where longer lifetimes and potentially increased temperatures are required. The current study examines the response of single layer atmospheric plasma spray (APS) ytterbium disilicate (YbDS) EBCs deposited onto CVD SiC to 1-h furnace cycle testing in air-90%H2O at 1250-1350C and evaluates the impact of substrate roughness on coating adhesion. Research sponsored by the U. S. Department of Energy, Office of Fossil Energy, Advanced Turbine Program.


Aerosol Deposition and Characterization of Sodium Niobate
Aerosol Deposition Method: Influence of Particle Agglomeration on SiC Film Density
Aerosol Deposition of Hexagonal and Cubic Boron Nitride
Anisotropic Wettability of CaO-MgO-Al2O3-SiO2 Deposits on YAlO3: Implications for Grain Boundary Engineering of Environmental Barrier Coatings for Gas Engine Applications
Cathodic Arc Deposition of Silicon Aluminum Nitride Coating on SiC
Cyclic Steam Oxidation of Single Layer Ytterbium Disilicate Environmental Barrier Coatings
Dry Aerosol Deposition of SiOx Coatings for Protection of Polymers in Low Earth Orbit
Electrodeposited NiMo Coatings for Improved Molten Salt Reactor Performance
Integrated Fluid and Materials Modeling of Environmental Barrier Coatings
Novel Multiscale Shear Adhesion Testing of Thermal Barrier Coatings
Obtaining Surface Coatings Providing Protection Against High Temperatures in the Production of Coke
Obtaining Wear-resistant Titanium Coatings in SHS Conditions
Real-time Observation of Impact Damage in Coated Silicon Carbide (SiC)

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