TY - JOUR
T1 - High-temperature chemical stability of plasma-sprayed Ca0.5Sr0.5Zr4P6O24 coatings on nicalon/SiC ceramic matrix composite and Ni-based superalloy substrates
AU - Lee, Woo Y.
AU - Cooley, Kevin M.
AU - Berndt, Christopher C.
AU - Joslin, Debra L.
AU - Stinton, David P.
PY - 1996/10
Y1 - 1996/10
N2 - 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.
AB - 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.
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U2 - 10.1111/j.1151-2916.1996.tb09045.x
DO - 10.1111/j.1151-2916.1996.tb09045.x
M3 - Article
AN - SCOPUS:0030259662
SN - 0002-7820
VL - 79
SP - 2759
EP - 2762
JO - Journal of the American Ceramic Society
JF - Journal of the American Ceramic Society
IS - 10
ER -