Hard-coated tool and its production method
US9534292B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 30, 2013 |
| Grant date | Jan 3, 2017 |
| Priority date | — |
| Expiry date | Sep 30, 2033 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/256
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A hard-coated tool comprising a titanium carbonitride layer formed directly on a WC-based cemented carbide substrate by a chemical vapor deposition method; the titanium carbonitride layer having a composition comprising 74-81% by mass of titanium, 13-16% by mass of carbon and 6-10% by mass of nitrogen; the titanium carbonitride layer having a structure comprising columnar crystal grains having an average transverse cross section diameter of 0.01-0.22 μm; a layer of W diffused from the substrate to the titanium carbonitride layer having an average thickness of 30-200 nm; and the titanium carbonitride layer having an X-ray diffraction peak of a (422) plane in a 2θ range of 122.7-123.7°.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.