Nanoscale surface properties of iron treated by electrochemical and physico-chemical methods

The nanoscale surface structure of surface oxide films formed on pure iron treated by UV irradiation at 3mW/cm2 and electrochemical passivation at an applied potential of 800mV vs. Ag/AgCl in a borate buffer solution have been observed with scanning probe microscopy and spectroscopic ellipsometry. U...

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Bibliographic Details
Published in:Current applied physics 2006-06, Vol.6 (3), p.448-452
Main Authors: Nanjo, H., Fujimura, M., Laycock, N.J., Xia, Z., Nishioka, M., Ishikawa, I., Onagawa, J.
Format: Article
Language:English
Subjects:
Atomic scale resolution
Electrochemical passivation
Flat
Oxide
Passive
Scanning tunnelling microscopy
Surface
Terrace
UV irradiation
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Summary:The nanoscale surface structure of surface oxide films formed on pure iron treated by UV irradiation at 3mW/cm2 and electrochemical passivation at an applied potential of 800mV vs. Ag/AgCl in a borate buffer solution have been observed with scanning probe microscopy and spectroscopic ellipsometry. UV irradiation of the air-formed film decreased the film thickness, surface roughness and surface area. UV irradiation of electrochemically passivated surfaces increased the film thickness and the terrace width of the oxide film.
ISSN:1567-1739
1878-1675
DOI:10.1016/j.cap.2005.11.070