Coating film, tool, and machine tool
US12410505B2 · kind B2 · utility
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12Claims
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Key dates
| Filing date | Mar 1, 2023 |
| Grant date | Sep 9, 2025 |
| Priority date | — |
| Expiry date | Oct 18, 2043 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23F21/16
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A coating film has a lamination unit including a first layer and at least one of a second layer and a third layer. The first layer is a nitride or the like of a first material represented by (Cr1-a-b-cAla[Ni1-dZrd]bXc). X is at least one element selected from Ti, Nb, Si, B, W, and V. a, b, c, and d represent atomic concentrations. The second layer is a nitride or the like of the second material represented by (AleCr1-e-fZf). Z is at least one element selected from Si, Y, and B. e and f represent atomic concentrations. The third layer is a nitride or the like of the third material represented by (AlgCr1-g).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.