Alkaline resistant manganese-nickel-zinc phosphate conversion coatings and method of application
US4596607A · kind A · utility
8Cited by
1References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 1, 1985 |
| Grant date | Jun 24, 1986 |
| Priority date | — |
| Expiry date | Jul 1, 2005 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC23C22/184
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A zinc phosphate coating bath and its application to metal is disclosed characterized in that the bath contains 80 to 94, preferably 84 to 94, mole percent nickel cations, 0.5 to 10 mole percent manganese cations and 5.5 to 19.5 mole percent zinc cations together with solubilizing amounts of phosphate ions or phosphate ions in combination with ions of acids other than phosphoric acid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.