Protective conversion coating on mixed-metal substrates and methods thereof
Patent
·
OSTI ID:1321862
Mixed-metal automotive vehicle bodies-in-white comprising ferrous metal surfaces, zinc surfaces, aluminum alloy surfaces, and magnesium alloy surfaces are cleaned and immersed in an aqueous bath comprising an adhesion promoter and an aqueous electrocoat bath (the adhesion promoter may be in the electrocoat bath. The adhesion promoter, which may be a cerium salt, is selected to react with each metal in the body surfaces to form an oxide layer that provides corrosion resistance for the surface and adherence for the deposited polymeric paint coating. The body is cathodic in the electrocoat deposition.
- Research Organization:
- The Curators Of The University Of Missouri, Columbia, MO (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- EE0003583
- Assignee:
- The Curators Of The University Of Missouri (Columbia, MO)
- Patent Number(s):
- 9,435,039
- Application Number:
- 13/450,667
- OSTI ID:
- 1321862
- Country of Publication:
- United States
- Language:
- English
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