Low temperature case hardening processes
US6461448B1 · kind B1 · utility
21Cited by
32References
23Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 15, 2000 |
| Grant date | Oct 8, 2002 |
| Priority date | — |
| Expiry date | May 15, 2020 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC23C8/02
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A method for case hardening a chromium bearing nickel or ferrous based alloy, for example stainless steel, article, the method including the steps of activating the surface of the article; and carburizing the activated surface at a temperature below that temperature which would promote the formation of carbides. In one embodiment the surface is activated by disposing a layer of iron over the surface of the article.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.