Process and apparatus for the dry treatment of metal surfaces
US6007637A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 18, 1996 |
| Grant date | Dec 28, 1999 |
| Priority date | — |
| Expiry date | Nov 18, 2016 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC23G5/00
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
The invention relates to a process for the dry surface treatment of at least one metal surface portion, according to which the portion is treated at a pressure close to atmospheric pressure by a gaseous treatment atmosphere comprising excited or unstable species and substantially devoid of electrically charged species, obtained from a primary gaseous mixture and if necessary an adjacent gaseous mixture, the primary gaseous mixture being obtained at the gas outlet of at least one device for the production of excited or unstable gaseous species, in which an initial gaseous mixture comprising an inert gas and/or a reducing gas and/or an oxidizing gas has been converted, the adjacent mixture not having passed through the device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.