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US 6,261,643 B1Granted
Protected thermal barrier coating composite with multiple coatings
AssigneeGeneral Electric Company
InventorsWayne Charles Hasz, Marcus Preston Borom, Curtis Alan Johnson
Life of this patent
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Abstract
A composite that protects thermal barrier coatings from the deleterious effects of environmental contaminants at operational temperatures is discovered. The thermal barrier coated parts have least two outer protective coatings that decrease infiltration of molten contaminant eutectic mixtures into openings in the thermal barrier coating.
Claims20
A method for forming a thermal barrier coating-protecting-composite comprising:
- depositing an impermeable barrier or sacrificial oxide first coating on the thermal barrier coating, and then depositing at least one other protective second coating that is non-wetting, sacrificial or impermeable on the first coating.
Dependencies are inferred from the claim text.