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Home List of Titles High-temperature chemical stability of plasma-sprayed Ca0.5Sr0.5Zr4P6O24 coatings on nicalon/SiC ceramic matrix composite and Ni-based superalloy substrates
Please use this identifier to cite or link to this item: http://hdl.handle.net/1959.3/41638
- High-temperature chemical stability of plasma-sprayed Ca0.5Sr0.5Zr4P6O24 coatings on nicalon/SiC ceramic matrix composite and Ni-based superalloy substrates
- Lee, Woo Young; Cooley, Kevin M.; Berndt, C. C.; Joslin, Debra L.; Stinton, David P.
- The potential application of Ca0.5Sr0.5Zr4P6O24 (CS50) as a corrosion-resistant coating material for Si-based ceramics and as a thermal barrier coating material for Ni-based superalloys was explored. A ∼200 μm thick CS50 coating was prepared by air plasma spray with commercially available powder. A Nicalon/SiC ceramic matrix composite and a Ni-based superalloy coated with a ∼200 μm thick metallic bond coat layer were used as substrate materials. Both the powder and coating contained ZrP2O7 as an impurity phase, and the coating was highly porous as-deposited. The coating deposited on the Nicalon/SiC substrate was chemically stable upon exposure to air and Na2SO4/O2 atmospheres at 1000°C for 100 h. In contrast, the coating sprayed onto the superalloy substrate significantly reacted with the bond coat surface after similar oxidation in air.
- Publication type
- Journal article
- Journal of the American Ceramic Society, Vol. 79, no. 10 (Oct 1996), pp. 2759-2762
- Publication year
- Ceramic coatings; Ceramic matrix composites; Corrosion resistance; High temperature applications; Metallic bond coat layer; Nickel alloys; Oxidation; Plasma spraying; Sprayed coatings; Substrates; Superalloys; Thermal conductivity; Thermal expansion; Thermal insulating materials
- Wiley-Blackwell Publishing
- Publisher URL
- Additional information
- This research was supported in part by the Advanced Research and Technology Development Materials Program, Office of Fossil Energy, US Department of Energy; the Advanced Gas Turbine Systems Program, Office of Industrial Technologies; and the Ceramic Technology Project of the Propulsion System Materials Program, Office of Transportation Technologies, under Contract No. DE-AC05-96OR22464 with Lockheed Martin Energy Research Corporation.
- Peer reviewed