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Mechanism Of Inhibition Of Galvanic Corrosion Between Carbon Steel And Stainless Steel By Sodium N-Lauroyl Sarcosinate And Zinc Sulfate

Author

Listed:
  • SHUAI HU

    (Hubei Key Laboratory of Materials Chemistry and Service Failure, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, P. R. China)

  • WENFENG JIA

    (#x2020;Sinopec Research Institute of Petroleum Engineering, Beijing 100101, P. R. China)

  • ZHENYU CHEN

    (Hubei Key Laboratory of Materials Chemistry and Service Failure, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, P. R. China)

  • XINGPENG GUO

    (Hubei Key Laboratory of Materials Chemistry and Service Failure, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, P. R. China)

Abstract

Inhibition effect of sodium N-lauroyl sarcosinate and zinc sulfate on the galvanic corrosion between carbon steel and stainless steel in 1% NaCl solution was investigated. The results of electrochemical measurements revealed that anodic and cathodic inhibitors inhibited galvanic corrosion by reducing the potential difference between the electrodes in two different ways. The values of corrosion potential and corrosion resistance of carbon steel increased after adding sodium N-lauroyl sarcosinate. In contrast, corrosion potential of stainless steel was shifted to the more negative region after adding zinc sulfate. X-ray photoelectron spectroscopy and scanning electron microscopy were applied to investigate the chemical compositions and morphologies of the films.

Suggested Citation

  • Shuai Hu & Wenfeng Jia & Zhenyu Chen & Xingpeng Guo, 2020. "Mechanism Of Inhibition Of Galvanic Corrosion Between Carbon Steel And Stainless Steel By Sodium N-Lauroyl Sarcosinate And Zinc Sulfate," Surface Review and Letters (SRL), World Scientific Publishing Co. Pte. Ltd., vol. 27(05), pages 1-12, May.
    • Handle: RePEc:wsi:srlxxx:v:27:y:2020:i:05:n:s0218625x19501464
    DOI: 10.1142/S0218625X19501464
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