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Meeting Materials Science & Technology 2020
Symposium Coatings to Protect Materials from Extreme Environments
Presentation Title Cathodic Arc Deposition of Silicon Aluminum Nitride Coating on SiC
Author(s) Emmanuel Ernest Boakye, Ming Ming Chen, Kristin Keller, Brian Sirn, Rabi Bhattacharya, A.K Rai
On-Site Speaker (Planned) Emmanuel Ernest Boakye
Abstract Scope A silicon aluminum nitride (SiAlN) based nanocomposite bond coat comprising 20:80 Si3N4:AlN volume ratio was deposited on Hexoloy SiC substrate using direct cathodic arc (DC) and filtered arc (FA) methods. The coatings were produced using a 20% Si - aluminum alloy in nitrogen. The coated substrates were characterized for uniformity of Si3N4/AlN nanocomposite mixture by SEM-EDX. SEM cross sectional examination showed continuous 20m well adhered coating on SiC. The coated substrates were thermally cycled at 1480C for up to 50 times in 50% H2O, 50% oxygen environment. The SiAlN phase transformed to mullite with a trace amount of silica. The SiAlN coating adhesion prior to and after thermal cycling was evaluated using scanning electron microscopy and X-ray diffraction.
Proceedings Inclusion? Undecided

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

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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