Coated tool and method of making

Details Coated tool and method of making Coated tool and method of making

C - Chemistry, Metallurgy

23

C

C23C 30/00 (2006.01) C23C 14/02 (2006.01) C23C 14/06 (2006.01)

Patent

CA 2397737

A tool (10) which includes a substrate (20) which has a first surface and a second surface wherein the first (22) surface and the second surface (24) intersect to form an edge (26). An adhesion coating scheme is on the substrate. The adhesion coating scheme comprises an innermost layer (30) which contains titanium, and is on the surface of the substrate. The adhesion coating scheme includes an outermost adhesion layer (34). A wear coating scheme is on the adhesion coating scheme. The wear coating scheme includes one or more wear coating sequences wherein each wear coating sequence comprises an inner layer (36) including aluminum and nitrogen and an outer layer (38) including boron and nitrogen.

Cette invention concerne un outil (10) comportant un substrat (20) avec une première (22) et une seconde (24) surfaces, ces deux surfaces se coupant pour former un bord (26). Le substrat est recouvert d'un agencement de couches d'adhérence. Cet ensemble comprend une couche profonde (30) contenant du titane à même la surface du substrat. L'agencement comporte également une couche d'adhérence extérieure (34). Un agencement de couches d'usure recouvre l'ensemble de couches d'adhésion. Cet agencement de couches d'usure comprend une ou plusieurs couches successives de matériau d'usure, chacune de ces couches comprenant elle-même une couche intérieure (36) renfermant de l'aluminium et de l'azote et une couche extérieure (38) renfermant du bore et de l'azote.

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