Dispersion strengthened rare earth stabilized zirconia

Details Dispersion strengthened rare earth stabilized zirconia Dispersion strengthened rare earth stabilized zirconia

2011-04-19

2011-04-19

Austin, Aaron (Department: 1784)

Stock material or miscellaneous articles

Composite

Of inorganic material

C416S24100B, C428S702000

Reexamination Certificate

active

07927722

ABSTRACT:
A process for forming a coating on a substrate, such as a turbine engine component, is provided. The process comprises the steps of: providing a first rare earth oxide stabilized zirconia composition; providing a second composition selected from the group consisting of a yttria stabilized zirconia composition, a ceria stabilized zirconia composition, alumina, a chromia-alumina composition, a gadolinia stabilized zirconia composition, and mixtures thereof; blending the first rare earth oxide stabilized zirconia composition with the second composition to form a blended powder; and depositing the blended powder onto the substrate. Articles having the coating formed from the above process are also described.

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A. Tsoga, A. Naoumidis et al: “processing and characterization of fina crystalline ceria-gadolinia-yttria stabilized zirconia powders” Journal of the European Ceramic Society, vol. 19, No. 6-7, Jun. 1999, pp. 907-912, XP002385883.
Zhu D et al: “Defect Clustering and Nano-Phase Structure Characterization of Multi-Component Rare Earth Oxide Doped Zirconia Yttria Thermal Barrier Coatings” Ceramic Engineeri.
English Abstract for CN 1398172 pulled from esp@cenet Jul. 23, 2008.
A. Tsoga, A. Naoumidis et al: “processing and characterization of fina crystalline ceria-gadolinia-yttria stabilized zirconia powders” Journal of the European Ceramic Society, vol. 19, No. 6-7, Jun. 1999, pp. 907-912, XP002385883.
Zhu D et al: “Defect Clustering and Nano-Phase Structure Characterization of Multi-Component Rare Earth Oxide Doped Zirconia Yttria Thermal Barrier Coatings” Ceramic Engineeri and Science Proceedings, Columbus, US, vol. 24, No. 3, 2003, pp. 525-534, XP009041699.

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