Trivalent chromium plating baths
US4157945A · kind A · utility
7Cited by
4References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 27, 1977 |
| Grant date | Jun 12, 1979 |
| Priority date | — |
| Expiry date | Dec 27, 1997 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC25D3/06
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
An electrolyte bath and a method for using such a bath comprising trivalent chromium ions dissolved in an aqueous solution containing sulphide. The bath may also contain a weak complexing agent such as hypophosphite or glycine. The electrolyte according to the invention permits the electrodeposition of chormium from electrolytes having low solids content without adversely affecting plating rates.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.