The Effect of Phosphate Chemistry and Rinsing Conditions on the Corrosion Resistance and the Paint Adhesion of Zinc Coated and Cold Rolled Sheet Steels

892557

12/01/1989

Event
1989 SAE Automotive Corrosion and Prevention Conference and Exposition
Authors Abstract
Content
A representative selection of commercially available zinc phosphate pretreatments were evaluated over four sheet metal substrates. The intent of the study was to compare cosmetic corrosion resistance and paint adhesion performance of the various sheet metal/phosphate combinations under present cathodic electrocoat and topcoat systems. While laboratory applied pretreatments were used, an attempt was made to duplicate deficient conditions on some specimens by eliminating rinse conditioner and/or chromium rinse. Panels were tested using the High Temperature Chipping Corrosion and Accelerated Outdoor Corrosion cycles. The resulting creepback from scribe and paint loss data were analyzed and used to draw conclusions regarding relative performances of rinse conditions, phosphates and substrates.
Meta TagsDetails
DOI
https://doi.org/10.4271/892557
Pages
22
Citation
Hess, J., and Soreide, L., "The Effect of Phosphate Chemistry and Rinsing Conditions on the Corrosion Resistance and the Paint Adhesion of Zinc Coated and Cold Rolled Sheet Steels," SAE Technical Paper 892557, 1989, https://doi.org/10.4271/892557.
Additional Details
Publisher
Published
Dec 1, 1989
Product Code
892557
Content Type
Technical Paper
Language
English