Multicomponent Coating
AssigneesPratt & Whitney Canada Corp., Concordia University, The Royal Institution for the Advancement of Learning/Mcgill University
InventorsBruno César Noronha Marques de Castilho, Joël Larose, Mary E. Makowiec, Pantcho P. Stoyanov, Christian Moreau, Navid Sharifi, Richard Chromik
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Abstract
A method for applying a coating includes: providing a mixture of MCrAlY, Cu, Mo, and BaF2 powders; and spraying the mixture on a metallic substrate. A heat treating in an oxidizing atmosphere may form at least a surface layer of: BaCrO4; BaMoO4; CuTa2O6; Cu2O; and CuO. The substrate may form a seal such as a split ring seal.
Claims25
A method for applying a coating, the method comprising:
- providing a mixture of:
- MCrAlY;
- Cu;
- Mo;
- and BaF2 powders;
- and
- spraying the mixture on a metallic substrate.
A coated substrate comprising:
- a metallic substrate;
- and
- a coating on the metallic substrate comprising:
- an MCrAlY matrix;
- a soft metal;
- a fluoride species;
- and
- molybdenum.
A coated substrate comprising:
- a metallic substrate;
- and
- a coating on the metallic substrate and having at least a surface layer comprising:
- an MCrAlY matrix;
- BaCrO4 and/or CaCrO4;
- BaMoO4 and/or CaCrO4;
- CuTa2O6;
- Cu2O;
- CuO;
- and
- Ni3Al precipitates.
Dependencies are inferred from the claim text.