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Fe41Co7Cr15Mo14C15B6Y2 (at%) bulk metallic glass was prepared by copper mold casting. Nanocrystalline Fe41Co7Cr15Mo14C15B6Y2 alloys were obtained by annealing. The influence of heat treatment at different temperatures on the alloy microstructure was identified by X-ray diffraction (XRD), and a comparative study of the electrochemical corrosion behaviors of amorphous and amorphous/nanocrystalline alloys was performed using potentiodynamic polarization method and electrochemical impedance spectroscopy (EIS) in 1.5 M HCl solution. The corrosion morphologies of the samples were observed by scanning electron microscopy (SEM). The results show that the amorphous alloy exhibits excellent anti-corrosion ability compared to the heat-treated samples, and the anti-corrosion ability of amorphous/nanocrystalline alloys decreases with increasing heat-treatment temperature.

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Electrochemical Corrosion Behavior of Different Heat-Treatment Temperature Fe-Based Bulk Amorphous Alloy

  • 章节

  • 发表日期：

    2025年

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  • Q. J. Chen,
  • H. Y. Yu,
  • X. L. Zhou,
  • X. Z. Hua

摘要

Fe41Co7Cr15Mo14C15B6Y2 (at%) bulk metallic glass was prepared by copper mold casting. Nanocrystalline Fe41Co7Cr15Mo14C15B6Y2 alloys were obtained by annealing. The influence of heat treatment at different temperatures on the alloy microstructure was identified by X-ray diffraction (XRD), and a comparative study of the electrochemical corrosion behaviors of amorphous and amorphous/nanocrystalline alloys was performed using potentiodynamic polarization method and electrochemical impedance spectroscopy (EIS) in 1.5 M HCl solution. The corrosion morphologies of the samples were observed by scanning electron microscopy (SEM). The results show that the amorphous alloy exhibits excellent anti-corrosion ability compared to the heat-treated samples, and the anti-corrosion ability of amorphous/nanocrystalline alloys decreases with increasing heat-treatment temperature.