Patent ID: 11965235
Assignee: MOLDINO TOOL ENGINEERING, LTD.
Field: Surface technology, coating (Chemistry)
Classification: CPC C | IPC C

Claim 0:
1. A coated cutting tool comprising a substrate and a hard coating film formed on the substrate,
wherein the hard coating film has:
a layer (b) disposed on the substrate and composed of a nitride or a carbonitride, and
a layer (c) that is disposed on the layer (b) and is a layered coating film formed by alternately layering
a nitride or carbonitride layer (c1) that contains, with respect to a total amount of metal elements (including metalloid elements), 55 atom % or more of aluminum (Al), chromium (Cr) having a second highest content percentage, and at least boron (B);
a nitride or carbonitride layer (c2) that contains, with respect to the total amount of the metal elements (including metalloid elements), 55 atom % or more of aluminum (Al) and titanium (Ti) having a second highest content percentage, each layer having a film thickness of 50 nm or less, and
in a case where, in an intensity profile obtained from a selected area diffraction pattern of a transmission electron microscope, a peak intensity ascribable to a (010) plane of MN having a hexagonal closest packed structure is defined as Ih, and a sum of a peak intensity ascribable to a (111) plane of MN, a (111) plane of TiN, a (111) plane of CrN, a (200) plane of MN, a (200) plane of TiN, a (200) plane of CrN, a (220) plane of MN, a (220) plane of TiN, and a (220) plane of CrN, all of which have a face-centered cubic structure, and a peak intensity ascribable to the (010) plane of MN, a (011) plane of MN, and a (110) plane of MN, all of which have a hexagonal closest packed structure, is defined as Is, the layer (c) satisfies a relationship of Ih×100/Is≤15.