PROCESS FOR FABRICATING AN AIRCRAFT PART COMPRISING A SUBSTRATE AND A SUBSTRATE COATING LAYER

摘要

A method of fabricating a part (1) comprising a metal substrate (Sub) at least partially covered in a coating layer (Rev). The method comprises: preparing (A) a surface of the substrate (Sub) to obtain a prepared surface of roughness Ra lying in the range 0.6 μm to 1.6 μm, and; forming (C) the coating layer (Rev) on the prepared surface of the substrate, this coating layer (Rev) being formed by spraying, using an HVOF type spraying method to spray a powder mixture containing grains (G) of metal carbide, the grains (G) having dimensions that are strictly less than 1 μm and the thickness (Epmin) of the coating layer (Rev) as formed in this way being less than 50 μm; then finishing at least one surface of said coating layer (Rev) by polishing (D) in such a manner as to ensure that its roughness Ra is less than 1.6 μm.