Structurally diverse thermal barrier coatings
AssigneeUnited Technologies Corporation
InventorsBrian S. Tryon, Kevin W. Schlichting, Melvin Freling, David A. Litton
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Abstract
A coated article includes an article having at least one surface and a thermal barrier coating system disposed upon the at least one surface. The thermal barrier coating system has at least two layers, with each layer having a different microstructure. The microstructure of each layer may be any one of the following: columnar, amorphous, randomized, and splat-like. The thermal barrier coating system typically exhibits a thermal conductivity of no more than 16 BTU in/hr ft2 F.
Claims26
A coated article, comprising:
- an article having at least one surface;
- and
- a thermal barrier coating system disposed upon said at least one surface;
- said thermal barrier coating system comprising at least two layers;
- each of said layers having a different microstructure than the other of said layers,
- wherein said thermal barrier coating system exhibits a thermal conductivity of no more than 16 BTU in/hr ft2 F.
A coated article, comprising:
- a turbine engine component having at least one surface;
- a thermal barrier coating system disposed upon said at least one surface;
- and
- said thermal barrier coating system comprising a first layer having a first microstructure, a second layer having a second microstructure, and an interlayer having a third microstructure formed between said first and second layers,
- wherein said first and second microstructures comprise any one of the following microstructures:
- columnar, amorphous, randomized, and splat-like,
- wherein said third microstructure comprises a combination of said first and second microstructures, and
- wherein said thermal barrier coating system exhibits a thermal conductivity of no more than 16 BTU in/hr ft2 F.
A process for coating an article, comprising:
- applying a first layer of a thermal barrier coating system having a first microstructure on at least one surface of an article;
- applying upon said first layer a second layer of said thermal barrier coating system having a second microstructure that is different from said first microstructure;
- and
- forming between said first and second layers an interlayer having a third microstructure comprising a combination of said first and second microstructures.
Dependencies are inferred from the claim text.