Protective conversion coating on mixed-metal substrates and methods thereof
Abstract
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.
- Inventors:
- Issue Date:
- Research Org.:
- The Curators Of The University Of Missouri, Columbia, MO (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1321862
- Patent Number(s):
- 9435039
- Application Number:
- 13/450,667
- Assignee:
- The Curators Of The University Of Missouri (Columbia, MO)
- Patent Classifications (CPCs):
-
C - CHEMISTRY C23 - COATING METALLIC MATERIAL C23C - COATING METALLIC MATERIAL
C - CHEMISTRY C23 - COATING METALLIC MATERIAL C23G - CLEANING OR DEGREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- DOE Contract Number:
- EE0003583
- Resource Type:
- Patent
- Resource Relation:
- Patent File Date: 2012 Apr 19
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE
Citation Formats
O'Keefe, Matthew J., and Maddela, Surender. Protective conversion coating on mixed-metal substrates and methods thereof. United States: N. p., 2016.
Web.
O'Keefe, Matthew J., & Maddela, Surender. Protective conversion coating on mixed-metal substrates and methods thereof. United States.
O'Keefe, Matthew J., and Maddela, Surender. Tue .
"Protective conversion coating on mixed-metal substrates and methods thereof". United States. https://www.osti.gov/servlets/purl/1321862.
@article{osti_1321862,
title = {Protective conversion coating on mixed-metal substrates and methods thereof},
author = {O'Keefe, Matthew J. and Maddela, Surender},
abstractNote = {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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Sep 06 00:00:00 EDT 2016},
month = {Tue Sep 06 00:00:00 EDT 2016}
}
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