Coating and method of applying a coating for an aerofoil of a gas turbine engine
AssigneeSiemens Aktiengesellschaft
InventorJonathan Wells
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Abstract
A component includes a nickel based alloy substrate having a coating system comprising a CrAl layer overlaying the nickel based alloy substrate, a NiCrAlY layer overlaying the CrAl layer and a yttria stabilized zirconia thermal barrier coating layer overlaying the NiCrAlY layer. A method of forming the coating system includes the steps air plasma spraying the NiCrAlY layer and air plasma spraying the yttria stabilized zirconia thermal barrier coating layer.
Claims16
A component for a gas turbine engine comprising a nickel based alloy substrate having a coating system comprising:
- a CrAl layer overlaying the nickel based alloy substrate,
- a NiCrAlY layer overlaying the CrAl layer, and
- a yttria stabilized zirconia thermal barrier coating layer.
A method of manufacturing a component comprising a nickel based alloy substrate having a coating system, the coating system comprising a CrAl layer overlaying the nickel based alloy substrate, a NiCrAlY layer overlaying the CrAl layer and a yttria stabilized zirconia thermal barrier coating layer, the method comprising:
- air plasma spraying the NiCrAlY layer, and
- air plasma spraying the yttria stabilized zirconia thermal barrier coating layer.
Dependencies are inferred from the claim text.