Method of and electrolytic bath for the electrodeposition of semibright nickel and nickel-cobalt coatings upon a metal surface
US4010084A · kind A · utility
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9Claims
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Key dates
| Filing date | Oct 23, 1975 |
| Grant date | Mar 1, 1977 |
| Priority date | — |
| Expiry date | Oct 23, 1995 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC25D3/14
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
Semibright (matte-gloss) coatings of nickel or nickel-cobalt are deposited on a metal substrate from a WATT'S-type sulfamiate or fluorobate electroplating bath at a pH of 2.5 to 5.8, a temperature of 15.degree. to 70.degree. C and a current density of 0.5 to 20 A/dm.sup.2 in the presence of a substance which deposits with the metal and ensures a semibright or matte-gloss finish. The substances form in situ within the bath from a cationic or amphoteric first component and a second component consisting of an organic anion interactive with the first component to produce a flocculate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.