Corrosion resistant conversion coatings
US7452427B2 · kind B2 · utility
5Cited by
22References
19Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 1, 2004 |
| Grant date | Nov 18, 2008 |
| Priority date | — |
| Expiry date | Apr 27, 2026 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC23C22/48
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A conversion coating composition for coating a metal substrate is provided which imparts corrosion resistance to the underlying metal substrate. The conversion coating composition comprises an aqueous carrier and first and second rare earth element salts. A complete coating system employing the conversion coating composition is also provided as well as methods for conversion coating a metal substrate with the rare earth element conversion coating compositions of the present invention.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.