Method for producing gold-colored surfaces pertaining to aluminum or aluminum alloys, by means of formulations containing silver salt
US7097756B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 10, 2001 |
| Grant date | Aug 29, 2006 |
| Priority date | — |
| Expiry date | Feb 5, 2023 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC25D11/22
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
The invention relates to a process for obtaining gold-colored aluminum oxide layers in which the coloring of the oxidized surface of the aluminum or aluminum alloys is carried out by an electrolytic process in an electrolyte comprising an alkanesulfonic acid and an alkanesulfonate of silver, and to the use of the gold-colored workpieces based on aluminum or aluminum alloys produced by this process for decorative purposes.The invention furthermore relates to an electrolyte solution for coloring the oxidized surface of aluminum or aluminum alloys gold by an electrolytic process, and to the use of an electrolyte comprising an alkanesulfonate of silver for coloring aluminum oxide layers based on aluminum or aluminum alloys gold in an electrolytic process.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.