Turbine blade tip treatment for industrial gas turbines
AssigneeUnited Technologies Corporation
InventorChristopher W. Strock
Life of this patent
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Abstract
A method of preventing transfer of metal of a gas turbine rotor blade having a metal tip to a blade outer air seal coating on a gas turbine case includes forming a coating on the metal tip. The coating comprises a bond coat layer on the metal tip and a ceramic filled metallic layer having a ceramic component in a matrix of a metal MCr, MCrAl, MCrAlY or a refractory modified CMCrAlY where M is nickel, cobalt, iron or mixtures thereof.
Claims18
A method of preventing transfer of metal of a gas turbine rotor blade having a metal tip to a blade outer air seal coating, comprising:
- a blade outer air seal coating on a gas turbine case;
- and
- a coating on the metal tip, the coating comprising a ceramic filled metallic layer having a ceramic component in a matrix of a metal.
A rotor and blade seal coating preventing transfer of metal of a gas turbine rotor blade having a metal tip to a blade outer air seal coating, comprising:
- a blade outer air seal coating on a gas turbine case;
- and
- a coating on the metal tip, the coating comprising a ceramic filled metallic layer having a ceramic component in a matrix of a metal.
In a gas turbine engine having a plurality of rotor blades having a metal tip and a blade outer air seal coating, comprising:
- a blade outer air seal coating on a gas turbine case;
- and
- a coating on the metal tip, the coating comprising a ceramic filled metallic layer
Dependencies are inferred from the claim text.