Method for forming a multi-layer anodic coating
US10309029B2 · kind B2 · utility
2Cited by
7References
32Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 19, 2014 |
| Grant date | Jun 4, 2019 |
| Priority date | — |
| Expiry date | Oct 4, 2035 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC25D11/246
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A method for producing a multi-layer anodic coating on a metal is described. The method comprises the steps of (i) placing the metal in a first electrolytic solution and applying a current to form a first anodic layer having a barrier region; (ii) reducing the applied current to cause a reduction in thickness of the barrier region; and (iii) placing the metal in a second electrolytic solution and applying a current to form a second anodic layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.