Effect of Rare Elements on Corrosion Behavior of SPCC in CSP

Yan Feng Zhou; Wei Jian Qiu; Wei Xiao Li; Jiang Xie

doi:10.4028/www.scientific.net/AMR.634-638.1698

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 634-638Effect of Rare Elements on Corrosion Behavior of...

Effect of Rare Elements on Corrosion Behavior of SPCC in CSP

Abstract:

The corrosion process of rare earth (RE) SPCC steel and SPCC steel in CSP in 3.5% NaCl solutions was investigated by SEM, EDS, XRD and polarization curve measurements. The results show that grain refinement can be obtained, the inclusions will be formed, and the electrochemical corrosion of microscopic region is weakened and therefore the corrosion resistance of SPCC steel could be improved by addition of RE. The rust layer of RE treated steel generated in the solution is more compact, the α-FeOOH content in rust layer is higher, and the content of activated γ-FeOOH and β-FeOOH is smaller, which are helpful to protect the steel. It also shows that current densities of SPCC steel is lower and the corrosive tendency will decrease with the addition of RE, which also makes the corrosion resistance of steel improved.

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Periodical:

Advanced Materials Research (Volumes 634-638)

Pages:

1698-1703

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.634-638.1698

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Online since:

January 2013

Authors:

Yan Feng Zhou, Wei Jian Qiu, Wei Xiao Li, Jiang Xie

Keywords:

Corrosion Resistance, CSP, Marine Atmosphere, Rare Earth (RE), SPCC

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