Coated cutting tool
AssigneeAB Sandvik Coromant
InventorsIsabella SCHRAMM, Lars JOHNSON
Life of this patent
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Abstract
A coated cutting tool including a substrate and a coating is provided. The coating includes a nano-multilayer having alternating layers of a first nanolayer of Ti1-xAlxN, wherein 0.63≤x≤0.95, and a second nanolayer of Cr1-yAlyN, wherein 0.55 y≤0.9. A sequence of one first nanolayer and one second nanolayer forms a layer period. The layer period of the nano-multilayer has an average thickness ≤16 nm and ≥2 nm, the thickness of the nano-multilayer ranges from 150 nm to 10 μm, and the peak intensity ratio of I(200)/I(111), as measured by XRD on the flank face, is >1.
Claims13
A coated cutting tool comprising a substrate and a coating, wherein the coating comprises a nano-multilayer consisting of alternating layers of
- i) a first nanolayer of Ti1-xAlxN, wherein 0.63≤x≤0.95, and
- ii) a second nanolayer of Cr1-yAlyN, wherein 0.5≤y≤0.9,
- wherein a sequence of one first nanolayer and one second nanolayer forms a layer period, wherein
- a) a layer period of the nano-multilayer has an average thickness ≤16 nm and ≥2 nm,
- b) a thickness of the nano-multilayer ranges from 150 nm to 10 μm, and
- c) a peak intensity ratio of I(200)/I(111), as measured by θ-2θ X-Ray-Diffraction on the flank face, is >1.
Dependencies are inferred from the claim text.