Wear-resistant coating
AssigneeMTU Aero Engines AG
InventorsWolfgang Eichmann, Falko Heutling, Thomas Uihlein
Life of this patent
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Abstract
The present technology generally relates to a wear-resistant coating, especially for gas turbine components, comprising a horizontally segmented or multilayered structure, i.e. at least one relatively hard, ceramic layer and at least one relatively soft, metallic layer. The ceramic layer and the metallic layer are alternately arranged on top of each other in such a way that an external layer forming an external surface of the wear-resistant coating is embodied as a ceramic layer. According to the invention, at least the external, ceramic layer is segmented in a column-type manner in a vertical direction.
Claims22
A wear-resistant coating having an alternating layered structure comprising a plurality of relatively hard ceramic layers and a plurality of relatively soft metallic layers, wherein the ceramic layers and the metallic layers are alternatingly positioned on top of one another such that an external layer, which forms an outer surface of the wear-resistant coating, is designed as a ceramic layer, wherein the external ceramic layer and a ceramic layer nearest the external layer are vertically segmented in the manner of a column such that each of the external ceramic layer and the ceramic layer nearest the external layer comprise layer columns, the layer columns extending through the layer in which the layer columns are located, the layer columns extending approximately perpendicular to a surface of a gas turbine component to which the wear-resistant coating is applied, wherein a metallic interlayer is interposed between the external ceramic layer and the ceramic layer nearest the external layer, and wherein said coating is used as a coating for gas turbine components.
A gas turbine component having a wear-resistant coating applied to a surface of the component, wherein the wear-resistant coating has an alternating layered structure comprising a plurality of relatively hard ceramic layers and a plurality of relatively soft metallic layers, wherein the ceramic layers and the metallic layers are alternatingly positioned on top of one another in such a way that an external layer, which forms an outer surface of the wear-resistant coating, is designed as a ceramic layer, and wherein the external ceramic layer and a ceramic layer nearest the external layer of the wear-resistant coating are vertically segmented in the manner of a column such that each of the external ceramic layer and the ceramic layer nearest the external layer comprise layer columns, the layer columns extending through the layer in which the layer columns are located, the layer columns extending approximately perpendicular to the surface of the gas turbine component to which the wear-resistant coating is applied, wherein a metallic interlayer is interposed between the external ceramic layer and the ceramic layer nearest the external layer.
A wear-resistant coating applied to a surface of a gas-turbine component, wherein the wear-resistant coating has a layered structure comprising a plurality of relatively hard ceramic layers and a plurality of relatively soft metallic layers, wherein the ceramic layers and the metallic layers are alternatingly positioned on top of one another in such a way that an external layer, which forms an outer surface of the wear-resistant coating, is designed as a ceramic layer, and wherein the external ceramic layer of the wear-resistant coating and a ceramic layer nearest the external layer are vertically segmented in the manner of a column such that each of the external ceramic layer and the ceramic layer nearest the external layer comprise layer columns, the layer columns extending through the layer in which the layer columns are located, the layer columns extending approximately perpendicular to the surface of the gas turbine component to which the wear-resistant coating is applied, and wherein a metallic interlayer is interposed between the external ceramic layer and the ceramic layer nearest the external layer.
Dependencies are inferred from the claim text.