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Effect Of Diffusion Process On Coating In Hot-Dipped Aluminized Steel

Author

Listed:
  • YUWEN DING

    (Jiangsu Key Laboratory of Materials Surface Science and Technology, Changzhou University 213164 Jiangsu, P. R. China2Jiangsu Collaborative Innovation Center of Photovolatic Science and Engineering, Changzhou University 213164 Jiangsu, P. R. China)

  • XIAOCHUN CHEN

    (Jiangsu Key Laboratory of Materials Surface Science and Technology, Changzhou University 213164 Jiangsu, P. R. China2Jiangsu Collaborative Innovation Center of Photovolatic Science and Engineering, Changzhou University 213164 Jiangsu, P. R. China)

  • YA LIU

    (Jiangsu Key Laboratory of Materials Surface Science and Technology, Changzhou University 213164 Jiangsu, P. R. China2Jiangsu Collaborative Innovation Center of Photovolatic Science and Engineering, Changzhou University 213164 Jiangsu, P. R. China)

  • XUPING SU

    (Jiangsu Key Laboratory of Materials Surface Science and Technology, Changzhou University 213164 Jiangsu, P. R. China2Jiangsu Collaborative Innovation Center of Photovolatic Science and Engineering, Changzhou University 213164 Jiangsu, P. R. China)

Abstract

Aluminized steels possess excellent corrosion resistance due to the formation of Al-Fe solution phases and intermetallic compounds in coatings. Ni was added to baths to further improve the corrosion resistance of the coatings at high temperature. Here, the role of Ni in the formation of coatings and the effect of diffusion process on the developing of coatings were investigated. 45 steels were immersed in Al-Ni baths (Al-1mass% Ni, Al-3mass% Ni, and Al-5mass% Ni) and diffusion-treated at 1023 and 1123K for 20, 40 and 100min, respectively. The coatings of samples were analyzed via scanning electron microscopy (SEM) along with energy-dispersive X-ray spectroscopy (EDS). X-ray diffraction (XRD) was further used to confirm the types of phases that formed during diffusion treatment. The formations of intermetallic coating layers were also analyzed via the diffusion path. More continuous Al3Ni layer and compact coating were obtained with diffusion treatment at 1023K for 40min.

Suggested Citation

  • Yuwen Ding & Xiaochun Chen & Ya Liu & Xuping Su, 2019. "Effect Of Diffusion Process On Coating In Hot-Dipped Aluminized Steel," Surface Review and Letters (SRL), World Scientific Publishing Co. Pte. Ltd., vol. 26(10), pages 1-9, December.
    • Handle: RePEc:wsi:srlxxx:v:26:y:2019:i:10:n:s0218625x19500707
    DOI: 10.1142/S0218625X19500707
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