Surface characterisation of cerium layers on galvanised steel

Surface characterisation of cerium layers on galvanised steel

The present paper investigates the inhibition mechanisms of CeCl 3·7H 2O in a range of concentrations, 100–1000 ppm, on hot dip galvanised steel in 3.5 wt.% NaCl solution. Following 4 h immersion in the studied solution, galvanised steel develops a yellow layer on the surface. X-ray photoelectron sp...

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Veröffentlicht in:Surface & coatings technology 2004-10, Vol.187 (2), p.320-325
Hauptverfasser: Arenas, M.A., de Damborenea, J.J.
Format: Artikel
Sprache:eng
Schlagworte:
A: photoelectron spectroscopy
C: chemical conversion
Cross-disciplinary physics: materials science
rheology
D: zinc
Exact sciences and technology
Materials science
Other topics in materials science
Physics
X: inhibition
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Zusammenfassung:The present paper investigates the inhibition mechanisms of CeCl 3·7H 2O in a range of concentrations, 100–1000 ppm, on hot dip galvanised steel in 3.5 wt.% NaCl solution. Following 4 h immersion in the studied solution, galvanised steel develops a yellow layer on the surface. X-ray photoelectron spectroscopy (XPS) revealed that the layer is composed of two regions: a surface region, which is a mixture of a hydrated oxide/hydroxide of cerium (III) and ZnO, and an internal region, which is a mixture of ZnO and cerium (III) oxide.
ISSN:0257-8972
1879-3347
DOI:10.1016/j.surfcoat.2004.02.033