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Corrosion performance of zinc coated steel in seawater environment

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Chinese Journal of Oceanology and Limnology Aims and scope Submit manuscript

Abstract

Considering the continuous exploitation of marine resources, it is very important to study the anticorrosion performance and durability of zinc coated streel (ZCS) because its increasing use as reinforcements in seawater. Tafel polarization curves and linear polarization curves combined with electrochemical impedance spectroscopy (EIS) were employed to evaluate the corrosion performance of ZCS at Qingdao test station during long-term immersion in seawater. The results indicated that the corrosion rate of the ZCS increased obviously with immersion time in seawater. The corrosion products that formed on the zinc coated steel were loose and porous, and were mainly composed of Zn5(OH)8Cl2, Zn5(OH)6(CO3)2, and ZnO. Pitting corrosion occurred on the steel surface in neutral seawater, and the rate of ZCS corrosion decreased with increasing pH.

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Acknowledgments

We would like to thank Dr. ZHAO Xiaorong of China Three Gorge University for her assistance in revising the draft manuscript.

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Authors and Affiliations

  1. Key Laboratory of Marine Materials and Related Technologies, Zhejiang Key Laboratory of Marine Materials and Protective Technologies, Ningbo Institute of Materials Technologies and Engineering, Chinese Academy of Sciences, Ningbo, 315201, China

    Shuan Liu  (刘栓), Xia Zhao  (赵霞), Haichao Zhao  (赵海超) & Jianmin Chen  (陈建敏)

  2. Key Laboratory of Marine Environmental Corrosion and Bio-Fouling, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, 266071, China

    Shuan Liu  (刘栓), Xia Zhao  (赵霞) & Huyuan Sun  (孙虎元)

Authors
  1. Shuan Liu  (刘栓)
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  2. Xia Zhao  (赵霞)
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  3. Haichao Zhao  (赵海超)
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  4. Huyuan Sun  (孙虎元)
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  5. Jianmin Chen  (陈建敏)
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Corresponding author

Correspondence to Xia Zhao  (赵霞).

Additional information

Supported by the National Natural Science Foundation of China (No. 41506098), the Post-Doctoral Fund of Zhejiang Province (No. BSH1502160), the Open Fund Project of Key Laboratory of Marine Materials and Related Technologies of China Academy of Sciences (No. LMMT-KFKT-2014-008), and the Ningbo Natural Science Foundation (No. 2015A610016)

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Liu, S., Zhao, X., Zhao, H. et al. Corrosion performance of zinc coated steel in seawater environment. Chin. J. Ocean. Limnol. 35, 423–430 (2017). https://doi.org/10.1007/s00343-016-5269-9

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  • DOI: https://doi.org/10.1007/s00343-016-5269-9

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