Electrochemical Corrosion Behavior of Corrosion-Resistant Steel for Cargo Oil Tank

Jing Xu; Jian Wei Yang; Jian Ping Cao

doi:10.4028/www.scientific.net/AMR.652-654.1876

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 652-654Electrochemical Corrosion Behavior of...

Electrochemical Corrosion Behavior of Corrosion-Resistant Steel for Cargo Oil Tank

Abstract:

Electrochemical corrosion behavior of corrosion-resistant steel for cargo oil tank were studied under different immersion corrosion time, and tests were carried in the PH=0.85, 10% NaCl solution, which temperature were 30°C. The electrochemical tested by the electrochemical polarization curve and electrochemical impedance spectroscopy (EIS), and the corrosion morphology and distribution of corrosion pit were observed under the metallography. The results indicate that along with the time extending, the corrosion potential of material moved from positive to negative, and then moved to positive. The corrosion current density also first reduced, then followed by the increasing and then decreasing, which indicated that the corrosion products of sample surface experienced a growth - dissolution - growth process, and presented a periodic corrosion rule. The position of corrosion pit mainly occurred around the pearlite.

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Periodical:

Advanced Materials Research (Volumes 652-654)

Pages:

1876-1880

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.652-654.1876

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Online since:

January 2013

Authors:

Jing Xu, Jian Wei Yang, Jian Ping Cao

Keywords:

Cargo Oil Tank, Corrosion-Resistant Steel, Different Times, Electrochemical Corrosion

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