Scandia-stabilized zirconia coating for composites

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428334, 428472, 428701, B32B 904

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049139614

ABSTRACT:
A scandia stabilized zirconia coating which is resistant to corrosion by sulfur and vanadium compounds at elevated temperatures. Scandia is present in the zirconia between about 4 to 8 mole percent. A composite formed from a coating of the stabilized zirconia on a substrate, such as a superalloy, is useful for turbine blades and engine pistons. Preferably, the coating is up to 10 mils thick.

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