Thermal barrier coating with alumina bond inhibitor

Details Thermal barrier coating with alumina bond inhibitor Thermal barrier coating with alumina bond inhibitor

1997-10-06

2000-08-15

Turner, Archene

Stock material or miscellaneous articles

Composite

Of metal

428469, 428697, 428701, 428702, B32B 1504

Patent

active

061033863

ABSTRACT:
A thermal barrier coating for superalloy turbine engine vanes and blades that are exposed to high temperature gas is disclosed. The coating includes an aluminide or MCrAlY layer, an alumina layer, and a ceramic top layer. The ceramic layer has a columnar grain microstructure. A bond inhibitor is disposed in the gaps between the columnar grains. This inhibitor is preferably alumina.

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