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US 2025/0339902 A1Published application
Coated cutting tool
AssigneeAB Sandvik Coromant
InventorsLinus VON FIEANDT, Raluca MORJAN BRENNING, Jan ENGQVIST
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Abstract
A coated cutting tool is provided. The cutting tool is CVD coated and has a substrate of cemented carbide, wherein a metallic binder in the cemented carbide includes Ni. The CVD coating has an inner layer of TiN and a subsequent layer of TiCN and a layer of Al2O3 located between the TiCN layer and an outermost surface of the coated cutting tool.
Claims12
A coated cutting tool comprising:
- a substrate;
- and
- a coating, wherein the substrate is made of cemented carbide composed of hard constituents in a metallic binder and wherein the metallic binder comprises 60 to 90 wt % Ni, and wherein the coating includes an inner TiN layer, a TiCN layer and a Al2O3 layer located between the TiCN layer and an outermost surface of the coated cutting tool and, wherein the TiCN is composed of crystal grains and wherein the grain size of the TiCN layer as measured along a line in a direction parallel to the surface of the substrate at a position of 1 μm from the TiN layer is about 0.10-0.30 μm.
Dependencies are inferred from the claim text.