Ion carburizing
US4853046A · kind A · utility
11Cited by
12References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 4, 1987 |
| Grant date | Aug 1, 1989 |
| Priority date | — |
| Expiry date | Sep 4, 2007 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC23C8/38
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A heat treat process is disclosed for use in an ion glow discharge chamber for carburizing ferrous workpieces. The process provides rapid carburizing cycles by optimizing the power supplied to the glow discharge correlated to temperature and desired uniformity of the carbon gradient profile while also optimizing the mass flow of the substantially pure carbon bearing gas which is correlated to the desired uniformity of the carbon gradient profile.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.