Thermophysical Properties of Samarium-Cerium Oxide for Thermal Barrier Coatings Application

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Abstract:

Sm0.4Ce0.6O1.8 specimen with a defective fluorite structure was synthesized and its thermophysical properties were characterized for thermal barrier coatings (TBCs) application. At high temperature, Sm0.4Ce0.6O1.8 exhibited much lower thermal conductivity than 7wt% yttria-stabilized zirconia (7YSZ)-the commonly used composition in current TBCs. Sm0.4Ce0.6O1.8 also possessed large thermal expansion coefficient, which could help reduce the thermal mismatch between the ceramic coating and bond coat.

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Key Engineering Materials (Volumes 336-338)

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1773-1775

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April 2007

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© 2007 Trans Tech Publications Ltd. All Rights Reserved

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