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Microstructure And Corrosive Behavior Of Enamel Coating Modified On Mild Steel

Author

Listed:
  • Y. L. LI

    (State Key Laboratory of Advanced Special Steels(Shanghai University), School of Materials Science and Engineering, Shanghai University, Shanghai, P. R. China)

  • Z. R. HUANG

    (State Key Laboratory of Advanced Special Steels(Shanghai University), School of Materials Science and Engineering, Shanghai University, Shanghai, P. R. China)

  • Q. D. ZHONG

    (State Key Laboratory of Advanced Special Steels(Shanghai University), School of Materials Science and Engineering, Shanghai University, Shanghai, P. R. China)

Abstract

Due to the study of marine corrosion of mild steel, in order to simulate the corrosion conditions of enamel coatings in seawater, enamel coatings applied on mild steel were immersed in 3.5wt.% NaCl liquor and the related corrosion features and behavior of enamel were analyzed by X-ray diffraction (XRD), scanning electron microscopy (SEM) and evaluated by electro-chemical method such as potentiodynamic polarization testing. Under the appropriate heat treatment system, the enamel coatings sintered on the same kind of mild steel at different temperatures were studied: all enamel samples were within the temperature range from 710∘C to 830∘C, the heat treating process at the microstructural level was evaluated and correlated with corrosion resistance properties. All the enamel coatings were characterized and it was observed that the enamel coatings that showed excellent corrosion resistance when sintered at a temperature of 810∘C can offer a better physical barrier than other temperatures because of their better bonding force and dense microstructure with less pores.

Suggested Citation

  • Y. L. Li & Z. R. Huang & Q. D. Zhong, 2018. "Microstructure And Corrosive Behavior Of Enamel Coating Modified On Mild Steel," Surface Review and Letters (SRL), World Scientific Publishing Co. Pte. Ltd., vol. 25(04), pages 1-8, June.
    • Handle: RePEc:wsi:srlxxx:v:25:y:2018:i:04:n:s0218625x18500816
    DOI: 10.1142/S0218625X18500816
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