Surface-coated cutting tool made of hard metal and manufacturing method for same
US7655299B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 28, 2005 |
| Grant date | Feb 2, 2010 |
| Priority date | — |
| Expiry date | Aug 17, 2026 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/30
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A surface-coated cutting tool comprising: a hard substrate; a lower layer which is formed on a surface of the hard substrate, contains a composite compound consisting of at least one element selected from Ti and Al, and at least one element selected from N and C, and has an average thickness of 0.1 to 3 μm; and an upper layer having an average thickness of 1 to 13 μm, which is formed on the lower layer and having a texture in which fine grains of crystalline Ti (C,N) based compounds or fine grains of crystalline (Ti, Al)(C, N) based compounds are dispersively distributed in a matrix of a carbon based amorphous material containing W.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.