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Meeting Materials Science & Technology 2020
Symposium Coatings to Protect Materials from Extreme Environments
Presentation Title Integrated Fluid and Materials Modeling of Environmental Barrier Coatings
Author(s) David Newsome, Rae Waxman, Andreas Hoffie, Ashok Raman, Debasis Sengupta, Stewart Silling
On-Site Speaker (Planned) David Newsome
Abstract Scope Ceramic matrix composites (CMC) are under development as alternative materials to superalloys for engine components. The safe and reliable use of the Si-based materials in the hot sections of gas turbine engines is critically reliant upon the performance and integrity of the environmental barrier coating (EBC). CFD Research is developing a physics-based simulation workflow and multiscale model of an EBC system interacting with the flow environment. The modeling procedure uses computational fluid dynamics (CFD) to establish the conditions at the part surface. The response of the coating materials is modeled in a meshfree continuum mechanics method, peridynamics (PD), at the microscale, where each constituent phase of the coating system is discretely resolved using a digital microstructure of the EBC. We will present our results on microscale delamination mechanism with growth of thermally grown oxide layer under an oxidative environment.


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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