Coated cutting tool and manufacturing method thereof
US7901796B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 26, 2005 |
| Grant date | Mar 8, 2011 |
| Priority date | — |
| Expiry date | Jan 8, 2028 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/265
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A coated cutting tool and its manufacturing method are provided. The coated cutting tool includes a base material and a coating layer formed on a surface of the base material. The coating layer includes an alternate layer having at least one layer of each of an A layer and a B layer stacked one on another alternately. The A layer is made of a nitride containing Al and Cr, and when the total number of metal atoms constituting the A layer is represented as 1, a ratio of the number of Cr atoms is more than 0 and not more than 0.4. The B layer is made of a nitride containing Ti and Al, and when the total number of metal atoms constituting the B layer is represented as 1, a ratio of the number of Al atoms is more than 0 and not more than 0.7.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.