Electrolytic solution and method for surface treatment of aluminum alloys for casting
US9845547B2 · kind B2 · utility
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4Claims
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Key dates
| Filing date | Feb 12, 2015 |
| Grant date | Dec 19, 2017 |
| Priority date | — |
| Expiry date | Aug 16, 2035 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC25D11/08
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A method for surface treatment of aluminum alloys for forms an oxidation film in the aluminum alloys for casting by adding a metallic anion compound to an electrolytic solution. The method can prevent cracks from occurring on a surface of the aluminum alloys for casting at the time of applying an anodizing method.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.