Method of anodizing of magnesium and magnesium alloys and producing conductive layers on an anodized surface
US6875334B2 · kind B2 · utility
5Cited by
19References
49Claims
0Family size
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Inventor
Key dates
| Filing date | Jun 26, 2002 |
| Grant date | Apr 5, 2005 |
| Priority date | — |
| Expiry date | Apr 5, 2023 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31663
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A method, a composition and a method for making the composition for anodizing metal surfaces, especially magnesium surfaces is disclosed. The composition is a basic aqueous solution including hydroxylamine, phosphate anions and nonionic surfactants. A complementary method, composition and method for making the composition for rendering an anodized metal surface, especially a magnesium surface, conductive is disclosed. The composition is a basic aqueous solution including bivalent nickel, pyrophosphate anions, sodium hypophosphite and either ammonium thiocyanate or lead nitrate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.