Vane for a compressor or a turbine of an aircraft engine,...

C - Chemistry – Metallurgy – 23 – C

Patent

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Details

C23C 28/00 (2006.01) C23C 30/00 (2006.01) F01D 25/00 (2006.01)

Patent

CA 2668298

The invention relates to an aircraft engine comprising a compressor and at least one turbine. The compressor and the turbine are each provided with vanes (1), each of which has a blade (10) that forms a suction side and a pressure side. At least one first (10) of said blades (10) is coated with a protective layer (16) in order to reduce erosion or wear. The protective layer (16) is applied to at least one side of the blade (10) in such a way that at least two areas (18, 20) are formed that adjoin each other at a boundary line (22). A first area (18) is provided with the protective layer (16) in such a way that the protective layer (16) has a substantially constant first thickness in said first area (18). A second area (20) is free from the protective layer (16) or is provided therewith in such a way that said protective layer (16) has a substantially constant second thickness in said second area (20), the second thickness differing from the first thickness. Said boundary line (22) has at least two points, of which the connecting line differs from the course of the boundary line between said two points.

L'invention concerne un turboréacteur présentant un compresseur et au moins une turbine, ledit compresseur et ladite turbine présentant, respectivement, des aubes (1) munies chacune d'une pale (10) formant un côté aspiration et un côté compression, au moins une première (10) de ces pales (10) étant recouverte, en vue de réduire l'érosion ou l'usure, d'une couche protectrice (16) qui est appliquée sur au moins un côté de la pale (10), de façon qu'il se forme au moins deux zones (18, 20) se rencontrant mutuellement en une ligne de délimitation (22), une première zone (18) étant munie de la couche protectrice (16), de telle façon que la couche protectrice (16) présente, dans cette première zone (18), une première épaisseur sensiblement constante, et une seconde zone (20) étant exempte de la couche protectrice (16) ou étant munie de la couche protectrice (16), de façon que la couche protectrice (16) dans cette seconde zone (20) présente une seconde épaisseur, sensiblement constante, se différenciant de la première épaisseur. L'invention est caractérisée en ce qu'il existe au moins deux points de ladite ligne de délimitation (22), dont le parcours de jonction se différencie de la trajectoire de la ligne de délimitation entre ces deux points.

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