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US 12,448,336 B2Granted
Bond coat including metal oxides and oxygen getters
AssigneeGeneral Electric Company
InventorsAnant Achyut Setlur, Julin Wan
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Abstract
Coated components and their methods of formation are provided. The coated component includes: a ceramic matrix composite substrate comprising silicon carbide and having a surface; a bond coat on the surface of the substrate; and an environmental barrier coating on the bond coat. The bond coat includes a plurality of discrete particles dispersed within a matrix phase that includes mullite. The plurality of discrete particles includes an oxygen getter and a transition metal oxide.
Claims20
A coated component, comprising:
- a ceramic matrix composite substrate comprising silicon carbide and having a surface;
- a bond coat on the surface of the ceramic matrix composite substrate, wherein the bond coat comprises a plurality of discrete particles dispersed within a matrix phase, wherein the plurality of discrete particles comprises an oxygen getter and a transition metal oxide in the form of an aluminate-transition metal oxide complex, and wherein the matrix phase comprises mullite;
- and
- an environmental barrier coating on the bond coat.
1 more element
A method of forming a coated component, the method comprising:
- forming a bond coat on a surface of a substrate, wherein the bond coat comprises a plurality of discrete particles dispersed within a matrix phase, wherein the plurality of discrete particles comprises an oxygen getter and a transition metal oxide in the form of an aluminate-transition metal oxide complex, and wherein the matrix phase comprises mullite;
- and
- forming an environmental barrier coating on the bond coat such that the plurality of discrete particles, when melted, are contained within matrix phase between the surface of the substrate and an inner surface of the environmental barrier coating.
Dependencies are inferred from the claim text.