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US 2025/0084004 A1Published application
Thermal spray powder and coated article
AssigneeRtx Corporation
InventorsJalil Alidoost, James T. Beals, Andrew Spaeth
Life of this patent
Estimating the term…
Abstract
A thermal spray powder includes composite powder particles that each have a silicon carbide core and a multi-layered shell that surrounds the core. The shell includes at least one layer of silica and at least one layer of alumina. The powder is used to deposit a mullite-based topcoat on a ceramic matrix composite wall of an article.
Claims20
A thermal spray powder comprising:
- composite powder particles, each of the composite powder particles including
- a silicon carbide core,
- a shell surrounding the silicon carbide core, the shell being multi-layered and including at least one layer of silica and at least one layer of alumina.
A gas turbine engine article comprising:
- a ceramic matrix composite (CMC) wall having an interface region;
- a silicon-containing bondcoat on the CMC wall in the interface region;
- and
- a topcoat on the silicon-containing bondcoat, the topcoat including a mullite matrix and silicon carbide particles dispersed through the mullite matrix.
1 more element
A gas turbine engine comprising:
- a compressor section;
- a combustor in fluid communication with the compressor section;
- and
- a turbine section in fluid communication with the combustor, the turbine section having an article including
- a ceramic matrix composite (CMC) wall having an interface region,
- a silicon bondcoat on CMC wall in the interface region, and
- a topcoat on the silicon bondcoat, the topcoat including a mullite matrix and silicon carbide particles dispersed through the mullite matrix.
4 more elements
Dependencies are inferred from the claim text.