Coating processes – Spray coating utilizing flame or plasma heat – Metal oxide containing coating
Patent
1996-07-23
1998-01-06
Utech, Benjamin
Coating processes
Spray coating utilizing flame or plasma heat
Metal oxide containing coating
427454, 4274193, 427422, 427427, C23C 410
Patent
active
057052310
ABSTRACT:
A method of producing a segmented abradable ceramic coating system having superior abradability and erosion resistance is disclosed. The system includes a duct segment having a metallic substrate, a MCrAlY bond coat on the substrate and a segmented abradable ceramic coating on the bond coat. The segmented abradable ceramic coating includes a base coat foundation layer, a graded interlayer and an abradable top layer for an overall thickness of preferably about 50 mils (1.270 mm). The coating is characterized by a plurality of vertical microcracks. By precisely controlling the deposition parameters, composition of the layers and layer particle morphology, segmentation is achieved, as well as superior abradability and erosion resistance.
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Foster George E.
Godin Daniel R.
Harter Harold D.
Nissley David M.
United Technologies Corporation
Utech Benjamin
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