Anti-wear coating and component comprising an anti-wear coating

C - Chemistry – Metallurgy – 23 – C

Patent

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C23C 28/00 (2006.01) F01D 5/28 (2006.01)

Patent

CA 2690626

The invention relates to an anti-wear coating, in particular an anti-erosion coating, which is applied to a surface of a component that is stressed under fluid technology and is to be protected, in particular a gas turbine part, wherein the anti-wear coating comprises one or more multilayer systems applied in a repeating order to the surface to be coated, and the/each multilayer system comprises at least one relatively soft metallic layer and at least one relatively hard ceramic layer. According to the invention, all the layers of the/each multilayer system are based on chromium, and a diffusion barrier layer is applied between the surface to be protected and the multilayer system(s).

L'invention concerne une couche anti-usure, en particulier une couche anti-érosion, qui est appliquée sur une surface à protéger d'un composant soumis à des contraintes se présentant en mécanique des fluides, notamment un composant de turbine à gaz, ladite couche anti-usure comprenant un ou plusieurs systèmes multicouches appliqués successivement sur la surface à revêtir, chacun desdits systèmes multicouches comprenant au moins une couche métallique relativement molle et au moins une couche céramique relativement dure. L'invention est caractérisée en ce que toutes les couches du, ou des système(s) multicouche(s), sont à base de chrome, et en ce qu'une couche barrière de diffusion mono-nanostructurée est appliquée entre la surface à protéger et le, ou les système(s) multicouche(s).

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