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US 12,636,707 B2Granted
Coated cutting tool
AssigneeAB Sandvik Coromant
InventorLars 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 of alternating layers of a first nanolayer being Ti1-xAlxN, 0.35≤x≤0.70, and a second nanolayer being Ti1-yAlyN, 0.12≤y≤0.25. A sequence of one first nanolayer and one second nanolayer forms a layer period. The average layer period thickness in the nano-multilayer is ≤7 nm. The nanomultilayer has a columnar structure with an average column width of ≤70 nm.
Claims15
A coated cutting tool comprising:
- a substrate;
- and
- a coating, wherein the coating comprises a nano-multilayer of alternating layers of a first nanolayer being Ti1-xAlxN, 0.35≤x≤0.70, and a second nanolayer being Ti1-yAlyN, 0.12≤y≤0.25, a sequence of one first nanolayer and one second nanolayer forming a layer period, wherein an average layer period thickness in the nano-multilayer is ≤7 nm, the nano-multilayer having a columnar structure with an average column width of ≤70 nm, and wherein a FWHM value for a cubic (200) peak in X-ray diffraction is from 0.6 to 1.2 degrees (2theta).
Dependencies are inferred from the claim text.