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US 8,273,231 B2Granted
Methods of depositing coatings with γ-Ni + γ′-Ni3A1 phase constitution
AssigneeROLLS-ROYCE plc
InventorGeorge Edward Creech
Life of this patent
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Abstract
A method including depositing a powder on a substrate to form a first layer thereon, wherein the layer includes a Pt group metal, Si and reactive element selected from the group consisting of Hf, Y, La, Ce, Zr, and combinations thereof. Deposited on the first layer is a second layer including Al to form a coating with a γ-Ni+−γ′Ni3Al phase constitution. In preferred embodiments, the second layer is deposited with an organo halocarbon activator.
Claims30
A method comprising:
- electrophoretically depositing a powder comprising a mixture of a Pt group metal, Si, and a reactive element selected from the group consisting of Hf, Y, La, Ce, Zr, and combinations thereof on a substrate to form a first layer thereon, wherein the first layer comprises the Pt group metal, Si and the reactive element selected from the group consisting of Hf, Y, La, Ce, Zr, and combinations thereof;
- and
- depositing on the first layer a second layer comprising Al to form a coating comprising a γ-Ni+γ′-Ni3Al phase constitution.
A method comprising:
- electrophoretically depositing a powder comprising a substantially homogeneous mixture of a Pt group metal, Si, and a reactive element selected from the group consisting of Hf, Y, La, Ce, Zr, and combinations thereof on a substrate to form a first layer comprising the Pt group metal, Si, and the reactive element;
- and
- depositing a second layer comprising Al on the first layer to form an alloy including a γ-Ni+γ′-Ni3Al phase constitution, wherein the second layer is deposited with an organo halocarbon activator.
Dependencies are inferred from the claim text.