Grit-blasted and densified bond coat for thermal barrier coating and method of manufacturing the same
AssigneeHoneywell International Inc.
InventorsBradley Lutz, Vladimir Tolpygo
Life of this patent
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Abstract
A method of providing a bond coat for a thermal barrier coating of a part of a turbomachine includes forming a first metallic bond coat layer on a substrate. The method also includes forming a second bond coat layer on the first metallic bond coat layer. The second bond coat layer has a porosity and a surface roughness that is greater than that of the first metallic bond coat layer. Furthermore, the method includes grit blasting the second bond coat layer to densify the second bond coat layer while substantially maintaining the surface roughness thereof.
Claims11
A method of providing a bond coat for a thermal barrier coating of a part of a turbomachine, the method comprising:
- forming a first metallic bond coat layer on a substrate;
- forming a second bond coat layer on the first metallic bond coat layer, the second bond coat layer having a porosity and a surface roughness that is greater than that of the first metallic bond coat layer;
- and
- grit blasting the second bond coat layer to densify the second bond coat layer while substantially maintaining the surface roughness thereof.
Dependencies are inferred from the claim text.