Protection of thermal barrier coating by a sacrificial coating

Details Protection of thermal barrier coating by a sacrificial coating Protection of thermal barrier coating by a sacrificial coating

2008-12-17

2010-02-23

Blackwell, Gwendolyn (Department: 1794)

Stock material or miscellaneous articles

Composite

Of b, n, p, s, or metal-containing material

C428S688000, C428S689000, C428S697000, C428S699000, C428S702000, C428S469000, C428S908800

Reexamination Certificate

active

07666528

ABSTRACT:
According to an embodiment of the invention, an article of manufacture for use in a gas turbine engine is disclosed. The article comprises a part having a surface covered with a ceramic thermal barrier coating. The thermal barrier coating has an outer surface covered with a sacrificial phosphate coating, wherein the sacrificial phosphate coating reacts with contaminant compositions to prevent contaminant infiltration into the thermal barrier coating.

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