Multilayered coated cutting tool
AssigneeSandvik Intellectual Property AB
InventorMaria Åstrand
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Abstract
A coated cutting tool is disclosed having a substrate and a coating including an aperiodic, multilayered structure with an average composition of (Ti, Al, Cr, Si)N, wherein the average composition is (Ti(1-a-b-c)AlaCrbSic)N, where 0<a<0.5, preferably 0.05<a<0.4 most preferably 0.25<a<0.3, where 0<b<0.15, preferably 0.02<b<0.10, most preferably 0.04<b<0.08, where 0.01<c<0.17, preferably 0.02<c<0.10, most preferably 0.04<c<0.08, and a+b+c<1, and wherein the average thickness of the individual layers is 0.1 to 100 nm.
Claims20
A coated cutting tool comprising a substrate and a coating, the coating including an aperiodic, multilayered structure with alternating individual metal nitride layers X and Y,
- wherein an average composition of the multilayered structure is:
- (Ti(1-a-b-c)AlaCrbSic)N
- where 0<a<0.5, 0<b<0.15, 0.01<c<0.17, and a+b+c<1, and
- wherein the multilayered structure comprises alternating (Ti, Si)N and (Al, Cr)N individual layers.
method of making a coated cutting tool comprising depositing a coating on a substrate by PVD technique, wherein the coating comprises an aperiodic, multilayered structure with alternating individual metal nitride layers X and Y, and wherein an average composition of said multilayered structure is (Ti(1-a-b-c)AlaCrbSic)N, where 0<a<0.5, 0<b<0.15, 0.01<c<0.17, and a+b+c<1, and wherein the multilayered structure comprises alternating (Ti, Si)N and (Al, Cr)N individual layers.
Dependencies are inferred from the claim text.