Multilayer nitride hard coatings
US11453063B2 · kind B2 · utility
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46References
12Claims
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Key dates
| Filing date | Feb 6, 2020 |
| Grant date | Sep 27, 2022 |
| Priority date | — |
| Expiry date | Jul 2, 2040 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23C2228/08
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
In one aspect, coatings are described herein employing composite architectures providing high aluminum content and high hardness for various cutting applications. For example, a coated cutting tool comprises a substrate and a coating comprising a refractory layer deposited by physical vapor deposition adhered to the substrate, the refractory layer comprising a plurality of sublayer groups, a sublayer group comprising a titanium aluminum nitride sublayer and an adjacent composite sublayer comprising alternating nanolayers of titanium silicon nitride and titanium aluminum nitride.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.