Multi-layer protective coating for an aluminum heat exchanger
US9417018B2 · kind B2 · utility
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3References
10Claims
0Family size
Assignee
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Key dates
| Filing date | Mar 11, 2013 |
| Grant date | Aug 16, 2016 |
| Priority date | — |
| Expiry date | Mar 11, 2033 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC23C2222/10
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A method for coating an aluminum alloy heat exchanger includes subjecting at least one surface of the heat exchanger to a pre-treatment process including cleaning; conversion coating the at least one surface of the heat exchanger with a trivalent chromium compound; and subjecting the at least one conversion coated surface to an electro-coating in an aqueous solution containing an organic corrosion inhibitor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.