Method of increasing corrosion resistance in galvanically deposited palladium/nickel coatings
US4430172A · kind A · utility
2Cited by
0References
9Claims
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Assignee
Inventors
Key dates
| Filing date | Sep 28, 1982 |
| Grant date | Feb 7, 1984 |
| Priority date | — |
| Expiry date | Sep 28, 2002 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC25D3/567
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
In a method of electrodepositing a palladium/nickel alloy coating upon a substrate wherein the coating is plated onto the substrate by electrodeposition from a bath containing 5 to 30 g per liter of palladium and 5 to 30 g per liter of nickel and having a palladium-nickel ratio such that the coating contains 30 to 90% by weight of palladium, the improvement which comprises providing in the bath during the eletrodeposition of the coating at least one sulfonyl urea compound capable of improving the corrision resistance of the coating.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.