Hard metal alloy with surface region enriched with tantalum, niobium, vanadium or combinations thereof and methods of making the same
US4784923A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 19, 1986 |
| Grant date | Nov 15, 1988 |
| Priority date | — |
| Expiry date | Jun 19, 2006 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC23C16/56
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
Disclosed is a method of producing a hard metal alloy with a surface region enriched with a first component being at least one of the carbides, nitrides and carbonitrides of tantalum, niobium, vanadium or combinations thereof wherein the atomic percent ratio of a second component present in the alloy and being selected from the carbides, nitrides and carbonitrides of titanium, hafnium and zirconium and combinations thereof to the first component is in the range of from 0 to about 1.5. Also disclosed are hard metal alloys having said surface enriched region which can be used to produce cutting tools which are resistant to galling and crater formation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.