PVD bond coat
AssigneeOerlikon Surface Solutions AG, PfäFfikon
InventorsJurgen Ramm, Beno Widrig, Peter Polcik, Malko Gindrat
Life of this patent
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Abstract
A superalloy workpiece includes a superalloy substrate and an interface layer (IF-1) of essentially the same superalloy composition directly on a surface of the superalloy substrate. A transition layer (TL) of essentially the same superalloy and superalloy oxides or a different metal composition and different metal oxides is on the interface layer (IF-1). The oxygen content of the transition layer increases from the interface layer (IF-1) towards a barrier layer (IF-2) of super alloy oxides or of different metal oxides.
Claims17
A superalloy workpiece comprising
- a superalloy substrate and
- an interface layer (IF-1) of essentially the same superalloy composition
- as the superalloy substrate directly on a surface of the superalloy substrate, followed by
- a transition layer (TL) of essentially the same superalloy composition as the superalloy substrate and superalloy oxides from that superalloy composition whereby oxygen content of the transition layer is
- increasing from interface layer (IF-1) towards
- a barrier layer (IF-2) of super alloy oxides
- wherein the interface layer (IF-1) has a crystal structure which is coherent to a crystal structure of the surface of the superalloy substrate.
A superalloy workpiece comprising
- a superalloy substrate and
- an interface layer (IF-1) of essentially the same superalloy composition as the superalloy substrate directly on a surface of the superalloy substrate, followed by
- a transition layer (TL) of a different metal composition and different metal oxides from the different metal composition whereby oxygen content of the transition layer is increasing from the interface layer (IF-1) towards
- a barrier layer (IF-2) of the different metal oxides
- wherein the different metal composition differs from essentially the same superalloy composition by at least a concentration of at least one element or an addition of at least one further element,
- wherein the interface layer (IF-1) has a crystal structure which is coherent to a crystal structure of the surface of the superalloy (SA) substrate.
Dependencies are inferred from the claim text.