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US 2020/0248577 A1Published application
Fusible bond for gas turbine engine coating system
AssigneeUnited Technologies Corporation
InventorsChristopher W. Strock, Enzo DiBenedetto
Life of this patent
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Abstract
A seal comprises a housing. A coating has at least two layers with a bond layer to be positioned between a housing and a second hard layer. The second hard layer is formed to be harder than the bond layer. The bond layer has a bond strength greater than or equal to 200 psi and less than or equal to 2000 psi. A gas turbine engine, and a method of forming a coating layer are also disclosed.
Claims20
A seal comprising:
- a housing;
- a coating having at least two layers with a bond layer to be positioned between a housing and an erosion resistant layer, said erosion resistant layer having a hardness greater than a hardness of said bond layer, and said bond layer having a bond strength greater than or equal to 200 psi and less than or equal to 2000 psi, said bond strength is a cohesive bond strength;
- and
- said erosion resistant layer is formed of a metal.
1 more element
A gas turbine engine comprising:
- a rotating blade having a radially outer tip;
- and
- a housing positioned radially outwardly of said blade, a coating provided on said housing outwardly of said blade, said coating having at least two layers with a bond layer positioned between said housing and an erosion resistant layer, said erosion resistant layer having a hardness greater than a hardness of said bond layer, and said bond layer having a bond strength greater than or equal to 200 psi and less than or equal to 2000 psi, said bond strength is a cohesive bond strength;
- and
- said erosion resistant layer is a metal.
2 more elements
Dependencies are inferred from the claim text.