Synthesis and Characterization of Modified Nano-TiO 2 Films for Corrosion Protection of Stainless Steel

A TiO 2 film and a B-Fe-Ce-modified TiO 2 film were prepared on the surface of 316L stainless steel (316L SS) substrates by a sol-gel and dip-coating method. The corrosion resistance of the films and their protective properties for the stainless steel were investigated by electrochemical impedance s...

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Bibliographic Details
Published in:ECS transactions 2013-04, Vol.50 (50), p.53-61
Main Authors: Zhu, Yan-Feng, Zhang, Juan, Du, Rong-Gui, Qi, Hai-Qing, Xu, Lu, Gao, Ying-Bo, Lin, Chang-Jian
Format: Article
Language:English
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Summary:A TiO 2 film and a B-Fe-Ce-modified TiO 2 film were prepared on the surface of 316L stainless steel (316L SS) substrates by a sol-gel and dip-coating method. The corrosion resistance of the films and their protective properties for the stainless steel were investigated by electrochemical impedance spectroscopy (EIS) and potentiodynamic polarization curve measurements. The results showed that the TiO 2 film and the B-Fe-Ce-modified TiO 2 film were composed of anatase TiO 2 nanoparticles with the diameters about 15 nm and 10 nm, respectively. The EIS results suggested that the B-Fe-Ce-TiO 2 film could provide more effective corrosion protection for 316L SS in 0.5 M NaCl solution. The potentiodynamic anodic polarization curve of the B-Fe-Ce-TiO 2 /316L SS electrode in the above solution showed a larger stable passive region and a higher breakdown potential ( E b ) than that of the TiO 2 /316L SS.
ISSN:1938-5862
1938-6737
DOI:10.1149/05050.0053ecst