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US 2026/0257973 A1Published application
Ebc with improved tgo and silicon-based bondcoat
AssigneeGeneral Electric Company
InventorJulin Wan
Life of this patent
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Abstract
A coated component, along with its method of formation, is provided. The coated component includes a silicon-containing substrate having a surface; a bondcoat on the surface of the silicon-containing substrate; and an environmental barrier coating on the bondcoat. The bondcoat comprises a silicon-based matrix with a strengthening phase dispersed therein. Upon oxidation of the bondcoat, a TGO layer is formed to include a dispersion of aluminum silicate-based crystals within a silicate-based oxide matrix.
Claims20
A coated component, comprising:
- a silicon-containing substrate having a surface;
- a bondcoat on the surface of the silicon-containing substrate, wherein the bondcoat comprises a silicon-based matrix with a strengthening phase dispersed therein;
- and
- an environmental barrier coating on the bondcoat.
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A method of forming a coated component, the method comprising:
- forming a bondcoat on a surface of a silicon-containing substrate, wherein the bondcoat comprises a silicon-based matrix with a strengthening phase dispersed therein;
- and
- forming an environmental barrier coating on the bondcoat;
- wherein, upon subsequent exposure of the coated component to an oxidating environment, a thermally grown oxide layer is formed on the bondcoat between the bondcoat and the environmental barrier coating, wherein the thermally grown oxide layer comprises a dispersion of aluminum silicate-based crystals within a silicate-based oxide matrix.
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Dependencies are inferred from the claim text.