Magnesium conversion coating composition and method of using same
US6692583B2 · kind B2 · utility
4Cited by
6References
57Claims
0Family size
Inventors
Key dates
| Filing date | Feb 14, 2002 |
| Grant date | Feb 17, 2004 |
| Priority date | — |
| Expiry date | May 30, 2022 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC23C22/44
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A conversion coating composition and a method of applying the conversion coating composition to magnesium and magnesium alloy articles prior to painting to prevent corrosion. The conversion coating composition comprises a source of vanadate ions, a material comprising phosphorus, and nitric acid or a source of nitrate ions. In addition, the composition may also contain boric acid or a source of borate ions and a source of fluoride ions or a source of fluoroborate ions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.