Nanolayered coated cutting tool and method for making the same

Details Nanolayered coated cutting tool and method for making the same Nanolayered coated cutting tool and method for making the same

C - Chemistry, Metallurgy

23

C

C23C 30/00 (2006.01) C23C 14/02 (2006.01) C23C 14/06 (2006.01) C23C 14/54 (2006.01) C23C 28/04 (2006.01)

Patent

CA 2478999

A nanolayered coated cutting tool (20) that includes a substrate (30) that has a surface (38, 40) with a coating (32) on the surface thereof. The coating comprises a plurality of coating sets of alternating nanolayers of metal aluminum nitride and metal nitride and/or metal aluminum carbonitride wherein each coating set has a thickness up to about 100 nanometers. The coating includes a bonding region (34) and an outer region (36). The bonding region (34) comprises a plurality of the coating sets wherein the thickness of each coating set increases as the set moves away from the surface of the substrate. The outer region (36) comprises a plurality of the coating sets wherein the thickness of each coating set is about equal.

Cette invention se rapporte à un outil de coupe avec revêtement en couches nanométriques (20), qui comprend un substrat (30) ayant une surface (38, 40) recouverte d'un revêtement (32). Ce revêtement comprend plusieurs ensembles de couches nanométriques alternées en nitrure l'aluminium métallique et en nitrure métallique et/ou en carbonitrure d'aluminium métallique, chaque ensemble de couches de revêtements ayant une épaisseur inférieure ou égale à environ 100 nanomètres. Ce revêtement contient une région de collage (34) et une région externe (36). La région de collage (34) comporte plusieurs ensembles de couches de revêtement, ayant chacun une épaisseur qui augment à mesure que l'ensemble des couches s'éloigne de la surface du substrat. La région externe (36) comprend plusieurs ensembles de couches de revêtement ayant chacun une épaisseur à peu près égale.

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