ANALYSIS OF SURFACE CARBON CONTAMINATION ON PHOSPHATED ZINC SURFACES BY SCANNING KELVIN PROBE MEASUREMENTS

Authors
NAZAROV A THIERRY D
Citation
A. Nazarov et D. Thierry, ANALYSIS OF SURFACE CARBON CONTAMINATION ON PHOSPHATED ZINC SURFACES BY SCANNING KELVIN PROBE MEASUREMENTS, Journal of the Electrochemical Society, 145(3), 1998, pp. 39-42
Citations number
11
Categorie Soggetti
Electrochemistry,"Materials Science, Coatings & Films
Journal title
Journal of the Electrochemical Society → ACNP
ISSN journal
00134651
Volume
145
Issue
3
Year of publication
1998
Pages
39 - 42
Database
ISI
SICI code
0013-4651(1998)145:3<39:AOSCCO>2.0.ZU;2-A
Abstract
The scanning Kelvin probe has been used to detect the presence of carb on particles on phosphated and electrogalvanized steel panels. The res ults showed that 30-40 mu m carbon particles could be detected by this method. Oxygen reduction is shown to be the rate-limiting step for th e atmospheric corrosion of phosphated zinc surfaces. The presence of c arbon particles leads to a rapid degradation of the phosphate layer at the contaminated locations.