Method of anodizing metallic surfaces
US7780838B2 · kind B2 · utility
6Cited by
24References
13Claims
0Family size
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Key dates
| Filing date | Feb 18, 2004 |
| Grant date | Aug 24, 2010 |
| Priority date | — |
| Expiry date | Oct 21, 2026 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC25D11/30
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A method of treating metallic workpieces with an anodizing solution, compositions of the anodizing solution and the coatings prepared with this anodizing solution for anodizing metallic surfaces, especially surfaces of magnesium, magnesium alloys, aluminum and aluminum alloys, are disclosed. The compositions are basic aqueous solutions comprising a water-soluble inorganic hydroxide, phosphorus and oxygen containing anions, at least one surfactant and an alkaline buffer based on at least one alkaline hydrolyzed silane, on at least one alcohol showing at least one alkaline radical group or on a mixture of them.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.