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US 12,617,022 B2Granted
Method of producing a coated cutting tool and a coated cutting tool
AssigneeAB Sandvik Coromant
InventorsFredrik Josefsson, Lars Johnson, Marta Saraiva
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AssigneeAB Sandvik Coromant
InventorsFredrik Josefsson, Lars Johnson, Marta Saraiva
Estimating the term…
A method for producing a coated cutting tool for metal machining having a substrate and coating is provided. The coating includes at least one layer of (Ti,Al)N having a cubic crystal phase. The method includes the deposition of a layer of Ti1-xAlxN, 0.70≤x≤0.98, the Ti1-xAlxN having cubic crystal phase. The layer of Ti1-xAlxN is deposited by cathodic arc evaporation at a vacuum chamber pressure of from 7 to 15 Pa of N2 gas, using a DC bias voltage of from −200 to −400 V and using an arc discharge current of from 75 to 250 A. A coated cutting tool for metal machining having a coating including a (Ti,Al)N multi-layer of alternating sub-layers of at least Ti1-yAlyN and Ti1-zAlzN, 0.35≤y≤0.65 and 0.80≤z≤0.98, with only cubic phase present is also provided.
A coated cutting tool for metal machining having a coating comprising a (Ti,Al) N multi-layer of alternating sub-layers of at least Ti1-yAlyN and Ti1-zAlzN, 0.35≤y≤0.65 and 0.80≤z≤0.98, with only cubic phase present in the form of a single phase cubic structure, an average individual (Ti,Al) N sub-layer thicknesses being from 1 to 20 nm, the (Ti,Al) N multi-layer is an aperiodic multi-layer, wherein the (Ti,Al) N multi-layer is a cathodic arc evaporation deposited multi-layer.
Dependencies are inferred from the claim text.