AlCrN-based coating providing enhanced crater wear resistance
US11035035B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 3, 2015 |
| Grant date | Jun 15, 2021 |
| Priority date | — |
| Expiry date | Feb 14, 2037 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC23C28/42
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
Coating (210) deposited on a surface of a substrate (201) comprising a multi-layered film (216) consisting of a plurality of A-layers and a plurality of B-layers deposited alternating one on each other forming a A/B/A/B/A . . . architecture, the A-layers comprising aluminium chromium boron nitride and the B-layers comprising aluminium chromium nitride and not comprising boron, whereas the multi-layered film (216) comprises at least a first portion (216a) and a last portion (216c), wherein the average boron content in the first coating portion (216a) is higher than the average boron content in the last coating portion (216c), and both the first coating portion (216a) and the last coating portion (216c) exhibit inherent compressive stresses and wherein the inherent compressive stress in the first coating portion (216a) is lower than it in the last coating portion (216c).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.