Method for anodizing parts made of an aluminum alloy
US9879355B2 · kind B2 · utility
1Cited by
1References
18Claims
0Family size
Assignee
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Key dates
| Filing date | Feb 11, 2013 |
| Grant date | Jan 30, 2018 |
| Priority date | — |
| Expiry date | Nov 16, 2034 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC25D11/38
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A method for anodizing a part made of aluminum or an aluminum alloy by immersing the part in an aqueous bath essentially comprising sulfuric acid at a concentration of 150 to 250 g/L and at a temperature of 5 to 25° C. A DC voltage according to a voltage profile comprising a voltage increased at a rate of 1 to 32 V/min is applied to the part. The voltage is maintained at a plateau voltage value of 12 to 20 V for a duration sufficient for obtaining, at the surface of the part, an anode layer having a thickness of 3 to 7 μm and/or a layer weight of 20 to 150 mg/dm2.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.