Manufacture of corrosion resistant components
US4881983A · kind A · utility
15Cited by
6References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 6, 1988 |
| Grant date | Nov 21, 1989 |
| Priority date | — |
| Expiry date | Jul 6, 2008 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC23C8/80
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A steel component is provided with a black wear and corrosion resistant finish by the steps of forming an epsilon iron nitride or carbonitride layer, bringing the component to gas oxidation temperature and oxidizing by a gaseous medium to form a dense black coating, and carrying out a surface finish treatment.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.