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A Green Pre-Film for Carbon Steel by Cerium Salt in Seawater

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Abstract:

An environment-friendly pre-film for carbon steel was obtained by using seawater with cerium salt. The influencing factors of cerium salt pre-film were discussed through orthogonal experiments, and the optimum processing parameters were confirmed. Then morphology, composition, the forming process and corrosion resistance of the pre-film were investigated. Analysis by digital microscope showed that the cerium salt pre-film was a blue uniform coating. EDS images displayed that the pre-film consisted of Ce, O and Fe, the major component of the protective layer was a mixture of Ce oxide, Ce hydroxide and Fe hydroxide. The results of electrochemical potentiodynamic polarization and gravimetric measurements indicated that the cerium salt pre-film provided effective protection to the substrate of carbon steel.

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Periodical:

Advanced Materials Research (Volumes 538-541)

Pages:

72-77

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.538-541.72

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Online since:

June 2012

Authors:

Li Li Gao, Zheng Zhang, Wei Zhen Wang, Xiang Yu Hou, Jing Wang, Xiang Gao, Chong Chen, Zhen Dong Cui

Keywords:

Carbon Steel, Cerium Salt, Pre-Film, Seawater

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© 2012 Trans Tech Publications Ltd. All Rights Reserved

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