Coating

Details Coating Coating

C - Chemistry, Metallurgy

23

C

C23C 30/00 (2006.01) C23C 14/16 (2006.01) C23C 14/35 (2006.01)

Patent

CA 2682368

A nanolayered coating, having a thickness of less than 100 nm, comprising nanolayers of: (i) TiN; and (ii) CrN, MoN, AlN, or AlN and CrN. The coating has an erosion rate, according to ASTM G76, at a particle velocity of 60 m/s and an impingement angle of 90°, of no greater than 4.0 x 10-3 mm3/g. Also provided is a monolithic TiAlN coating. Such coatings may be useful for erosion protection of aircraft or gas turbine components; or wear protection of gears, cutting tools including machine cutting tools and surgical cutting tools, or other metallic surfaces.

L'invention porte sur un revêtement à nanocouches, ayant une épaisseur de moins de 100 nm, comprenant des nanocouches de : (i) TiN; et (ii) CrN, MoN, AlN, ou AlN et CrN. Le revêtement a un taux d'érosion, conformément à ASTM G76, à une vitesse de particules de 60 m/s et un angle d'impact de 90°, de pas plus de 4,0 x 10-3 mm3/g. L'invention porte également sur un revêtement de TiAlN monolithique. De tels revêtements peuvent être utiles pour la protection contre l'érosion de composants d'avions ou de turbines à gaz; ou de protection contre l'usure d'engrenages, d'outils de coupe comprenant des outils de coupe de machines et des outils de coupe chirurgicaux ou autres surfaces métalliques.

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