Surface modification of high temperature iron alloys
US5421914A · kind A · utility
1Cited by
3References
17Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 12, 1993 |
| Grant date | Jun 6, 1995 |
| Priority date | — |
| Expiry date | Oct 12, 2013 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC23C14/10
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A method and article of manufacture of a coated iron based alloy. The method includes providing an iron based alloy substrate, depositing a silicon containing layer on the alloy surface while maintaining the alloy at a temperature of about 700.degree. C.-1200.degree. C. to diffuse silicon into the alloy surface and exposing the alloy surface to an ammonia atmosphere to form a silicon/oxygen/nitrogen containing protective layer on the iron based alloy.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.