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US 12,392,249 B2Granted
Coating for thermally and abrasively loaded turbine blades
AssigneeOerlikon Surface Solutions AG, PfäFfikon
InventorsBernhard Kohlhauser, Jürgen Ramm, Oliver Hunold, Edgar Balter
Life of this patent
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Abstract
A method for coating a substrate surrounding a gas turbine blade, including the following steps: in a first step, a MCrAlY matrix is applied by means of a PVD method; in a further step, an oxide layer is applied by means of a PVD method.
Claims6
A method for coating a substrate comprising a gas turbine blade, comprising the steps:
- in a first step, application of a MCrAlY matrix by means of a PVD method, wherein “M” in MCrAlY stands for Co, Ni, or Co—Ni;
- and
- in a further step, application of a layer by means of a PVD method, wherein the layer is aluminum-chromium oxide,
- wherein the steps for applying the MCrAlY matrix and for applying the aluminum-chromium oxide are repeated alternately in order to deposit a multilayer layer comprising alternating MCrAlY and aluminum-chromium oxide layers.
1 more element
A layer system for a gas turbine blade tip, comprising:
- at least a first layer with a MCrAlY matrix, wherein “M” in MCrAlY stands for Co, Ni, or Co—Ni;
- and
- at least a second layer, wherein the second layer is aluminum-chromium oxide,
- wherein the layer system is a multi-layer coating system in which the first and second layer alternate.
1 more element
Dependencies are inferred from the claim text.