Electrodeposition of nickel-tungsten amorphous and microcrystalline coatings
US5389226A · kind A · utility
19Cited by
3References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 30, 1993 |
| Grant date | Feb 14, 1995 |
| Priority date | — |
| Expiry date | Jun 30, 2013 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC25D3/562
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A nickel tungsten-containing coating is electrodeposited onto a substrate from an electrodeposition bath having in solution from about 0.034 to about 0.047 moles per liter of nickel, from about 0.15 to about 0.28 moles per liter of tungsten, from about 0.13 to about 0.43 moles per liter of hydroxycarboxylic acid, and 0 or from about 0.077 to about 0.15 moles per liter of boron. The bath has a pH of from about 6 to about 9, and the electrodeposition is preferably accomplished at a temperature of from about 100.degree. F. to about 140.degree. F.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.