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US 12,037,910 B2Granted
Fusible bond for gas turbine engine coating system
AssigneeRtx 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.
Claims9
A gas turbine engine comprising:
- a rotating blade having a radially outer tip;
- a housing positioned radially outwardly of said blade, a coating provided on said housing directly radially 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;
- said erosion resistant layer is a metal;
- and
- such that should the rotating blade radially outer tip contact said erosion resistant layer the bond layer will provide an effective fuse which releases the erosion resistant layer to prevent damage to the rotating blade.
2 more elements
Dependencies are inferred from the claim text.