X-ray photoelectron spectroscopy study of the corrosion behaviour of galvanised steel implanted with rare earths

The present paper studies the effect of ion implantation of 2 × 10 16 ions/cm 2 of Ce + and 2 × 10 16 ions/cm 2 of La + at 150 keV on the corrosion behaviour of hot-dip galvanised steel. After implantation, galvanised steel was characterised by means of XPS previous to and following immersion in the...

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Bibliographic Details
Published in:Corrosion science 2004-04, Vol.46 (4), p.1033-1049
Main Authors: Arenas, M.A, Garcı́a, I, de Damborenea, J
Format: Article
Language:English
Subjects:
A. Galvanised steel, Cerium salts
Applied sciences
B. XPS, EIS
C. Neutral inhibition
Corrosion
Corrosion environments
Corrosion mechanisms
Exact sciences and technology
Metals. Metallurgy
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Summary:The present paper studies the effect of ion implantation of 2 × 10 16 ions/cm 2 of Ce + and 2 × 10 16 ions/cm 2 of La + at 150 keV on the corrosion behaviour of hot-dip galvanised steel. After implantation, galvanised steel was characterised by means of XPS previous to and following immersion in the medium. The results revealed incorporation of cerium and lanthanum on the surface as Ce 2O 3 and La 2O 3, respectively. Electrochemical impedance spectroscopy was carried out in order to evaluate its corrosion behaviour in 0.6 M NaCl during 1 month of immersion. The corrosion resistance was improved by an increase in the charge transfer resistance of the implanted specimens in the medium. This effect could be associated with changes in the morphology/microstructure of the corrosion products layer rather than in its composition variations.
ISSN:0010-938X
1879-0496
DOI:10.1016/S0010-938X(03)00193-8