Surface-modified, WC-based cemented carbide member, hard-coated, WC-based cemented carbide member, and their production methods
US9492872B2 · kind B2 · utility
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8Claims
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Key dates
| Filing date | Jul 30, 2012 |
| Grant date | Nov 15, 2016 |
| Priority date | — |
| Expiry date | Aug 19, 2032 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/12014
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
The ion bombardment of Cr, etc. onto a surface of a WC-based cemented carbide substrate in a nitrogen-based gas forms a modified phase having a bcc structure on the substrate surface, and a hard coating containing at least Cr formed thereon has high adhesion to the substrate by the modified phase.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.