Nitrided materials
US4026730A · kind A · utility
3Cited by
6References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 20, 1974 |
| Grant date | May 31, 1977 |
| Priority date | — |
| Expiry date | Nov 20, 1994 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC22C27/02
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Nitrided cutting tool materials having excellent wear and abrasion resistance. Such materials consist essentially of an alloy base of (a) one or more metals of the group columbium and vanadium and sometimes tantalum; (b) hafnium; (c) one or more metals of the group molybdenum, tungsten, rhenium and chromium; and (d) optionally titanium and/or zirconium, all in amounts by weight as are set out in this specification. These alloys are formable to shape and are then nitrided to produce a nitrided gradient in a high hardness surface zone.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.