Diamond film coated tool and process for producing the same
US7883775B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Nov 12, 2003 |
| Grant date | Feb 8, 2011 |
| Priority date | — |
| Expiry date | Aug 17, 2024 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/30
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
The invention provides a diamond coated tool having an excellent cutting performance, wear resistance, adhesion resistance and work surface roughness in combination and a method of producing such a tool.A diamond coated tool comprising a substrate and a diamond coating formed on the surface of the substrate, wherein said substrate is made of a cemented carbide or a cermet, diamond grains constituting a growth surface of said diamond coating has an average grain size of about 1.5 micrometers or below, said diamond coating has a thickness ranging from about 0.1 micrometer to 20 micrometers, and said diamond coating has an average surface roughness Ra ranging from about 0.01 micrometer to 0.2 micrometer. Such a diamond coated tool can be obtained by carburizing the substrate consisting of a cemented carbide or a cermet, and growing up a diamond coating thereon.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.