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 = {2016},
month = {9}
}
Save to My Library
You must Sign In or Create an Account in order to save documents to your library.
Works referenced in this record:
Process for coating phosphated metal substrates
patent, June 1998
- Buttner, Gabriele; Kimpel, Matthias; Klein, Klausjorg
- US Patent Document 5,773,090
Process for applying a lead-free coating to untreated metal substrates via electrodeposition
patent, January 2001
- Hauser, Brian T.; Karabin, Richard F.; Lingenfelter, Thor G.
- US Patent Document 6,168,868
Coated metal substrates and methods for preparing and inhibiting corrosion of the same
patent, November 2001
- Hauser, Brian T.; Gray, Ralph C.; Nugent, Jr., Richard M.
- US Patent Document 6,312,812
Process and solution for providing a conversion coating on a metallic surface I
patent, August 2004
- Hardin, Simon Gerard; Wittel, Klaus; Hughes, Anthony Ewart
- US Patent Document 6,773,516
Additive-assisted cerium-based electrolytic coating process for corrosion protection of aluminum alloys
patent, November 2004
- Stoffer, James O.; O'Keefe, Thomas J.; Morris, Eric L.
- US Patent Document 6,818,116
Additive-assisted, cerium-based, corrosion-resistant e-coating
patent, July 2007
- Stoffer, James O.; O'Keefe, Thomas J.; Morris, Eric L.
- US Patent Document 7,241,371
Coating line and process for forming a multilayer composite coating on a substrate
patent, May 2009
- Purdy, Sean; Simpson, Dennis A.; Foukes, Richard J.
- US Patent Document 7,531,074
Process for forming a well visible non-chromate conversion coating for magnesium and magnesium alloys
patent, April 2010
- Ostrovsky, Ilya
- US Patent Document 7,695,771
Method for forming surface-treating film
patent, March 2011
- Shimoda, Masaharu; Okada, Eisaku
- US Patent Document 7,906,002