Additive-assisted cerium-based electrolytic coating process for corrosion protection of aluminum alloys
US6818116B2 · kind B2 · utility
16Cited by
3References
29Claims
0Family size
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Key dates
| Filing date | Aug 8, 2002 |
| Grant date | Nov 16, 2004 |
| Priority date | — |
| Expiry date | Sep 14, 2022 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC25D9/12
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
The corrosion resistance of an aluminum or aluminum alloy component is enhanced by immersing an aluminum alloy to act as a cathode and an oxygen-evolving anode in an electrolyte comprising water, cerium ions, and an additive selected from among animal gelatin, derivatives of animal gelatin, and amino acids, then passing an electrical current through the electrolyte to deposit a cerium-based coating onto the aluminum-based component.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.