Ab Sandvik Coromant

Sandvik Intellectual Property Ab

Linus Von Fieandt

Jan Engqvist

Erik Holmstrom

Andreas Blomqvist

Raluca Brenning

Erik Lindahl

Raluca Morjan Brenning

Erik HOLMSTRÖM

A coated cutting tool has a CVD coated and a substrate of a cemented carbide, wherein the metallic binder in the cemented carbide includes Ni. The CVD coating has an inner layer of TiN and a subsequent layer of TiCN. The C-activity relative to graphite in the metallic binder is lower than 0.15 and an average d electron value of the metallic binder is 7.00-7.43, wherein an interface between the substrate and the inner TiN layer is free of Ti-containing intermetallic phase.

Coated cutting tool

A coated cutting tool has a CVD coating and a substrate of a cemented carbide, wherein the metallic binder in the cemented carbide includes Ni. The CVD coating has an inner layer of TiN and a subsequent layer of TiCN. A C-activity relative to graphite in the metallic binder is lower than 0.15 and an average d electron value of the metallic binder is 7.00-7.43, wherein an interface between the substrate and the inner TiN layer is free of Ti-containing intermetallic phase.

A coated cutting tool is CVD coated and includes a substrate of a cemented carbide, wherein the metallic binder in the cemented carbide Includes Ni. The CVD coating includes an inner layer of TiN and a subsequent layer of TiCN.

A coated cutting tool includes a substrate coated with a multi-layered wear resistant coating having a layer of α-AlOand a layer of titanium carbonitride TiCN, with 0.85≤x≤1.3 and 0.4≤y≤0.85, deposited on the α-AlOlayer. The TiCNexhibits a texture coefficient TC(hkl), measured by X-ray diffraction using CuKα radiation and θ-2θ scan. The TC(hkl) is defined according to Harris formula: wherein

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Uppsala, Sweden

Linus Von Fieandt