Processes of phosphating surfaces of iron and of steel with manganese
US4311536A · kind A · utility
3Cited by
2References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 3, 1980 |
| Grant date | Jan 19, 1982 |
| Priority date | — |
| Expiry date | Jul 3, 2000 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC23C22/78
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
The invention relates to a process of phosphating surfaces of iron and of steel with manganese. The abovesaid process is characterized by the fact on the one hand, that it does not include a refining treatment preceding the proper phosphating, and on the other hand, that the alkali degreasing bath has a pH of 9 to 12 and includes in suspension bivalent manganese in orthophosphate form.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.