Application of Small Spot XPS and Static SIMS in the Study of Corrosion Mechanisms in Painted Precoated Automotive Steels 892559
The polymer-metal interface in painted precoated galvanized steel has been investigated using X-Ray Photoelectron Spectroscopy (XPS) and static secondary Ion Mass Spectrometry (SIMS). Small spot XPS was used to identify the type of corrosion product formed in cyclic corrosion testing as 6Zn (OH)2 .ZnCl2, as opposed to 4Zn (OH)2 .ZnCl2 which is formed in atmospheric corrosion conditions. Analysis of the paint-metal interface by means of static SIMS demonstrated adsorption of an organic constituent of the paint system on the metal which was identified as uncured epoxy. This effect seemed to be dependent on the curing conditions and was observed to correlate with the performance of the material in a scab corrosion test. The results demonstrate that XPS and static SIMS are very powerful tools for the study of the chemistry at paint-metal interfaces.
Citation: van Ooij, W., Sabata, A., and Wirmark, G., "Application of Small Spot XPS and Static SIMS in the Study of Corrosion Mechanisms in Painted Precoated Automotive Steels," SAE Technical Paper 892559, 1989, https://doi.org/10.4271/892559. Download Citation
Author(s):
W. J. van Ooij, A. Sabata, G. Wirmark
Affiliated:
Dept. of Chemistry and Geochemistry, Colorado School of Mines Golden, CO, AB Volvo Gothenburg, Sweden
Pages: 12
Event:
1989 SAE Automotive Corrosion and Prevention Conference and Exposition
ISSN:
0148-7191
e-ISSN:
2688-3627
Also in:
Automotive Corrosion and Prevention Conference Proceedings-P-228
Related Topics:
Corrosion
Coatings, colorants, and finishes
Steel
Metals
Drying
Resins
Spectroscopy
Thermoplastics
Tools and equipment
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