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<p>The corrosion resistance of contact and outer surfaces of strips of amorphous metal alloys based on cobalt Co<sub>72.0</sub>Fe<sub>5.0</sub>Si<sub>11.0</sub>B<sub>12.0</sub>, Co<sub>73.2</sub>Fe<sub>4.3</sub>Mn<sub>0.5</sub>Si<sub>5.3</sub>B<sub>16.7</sub>, and Co<sub>73.3</sub>(Fe, Ni, Mo, Mn)<sub>5.7</sub>(Si<sub>0.2</sub>B<sub>0.8</sub>)<sub>21</sub> in aqueous solutions of HCl, NaCl, and NaOH was investigated. The Co<sub>72.0</sub>Fe<sub>5.0</sub>Si<sub>11.0</sub>B<sub>12.0</sub> alloy demonstrated the lowest corrosion resistance in all investigated aggressive environments. Partial replacement of Co and Fe by Mn, as well as Ni and Mo, slightly increases the corrosion resistance of the material due to the formation of dense oxide layers on the surface.</p>

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Electrochemical parameters of cobalt amorphous alloys in aggressive environments of various nature

  • 期刊论文

  • 发表日期：

    2025年1月1日

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  • O. M. Hertsyk,
  • O. A. Yezerska,
  • V. K. Nosenko,
  • N. M. Havryliak,
  • N. L. Pandiak

摘要

The corrosion resistance of contact and outer surfaces of strips of amorphous metal alloys based on cobalt Co72.0Fe5.0Si11.0B12.0, Co73.2Fe4.3Mn0.5Si5.3B16.7, and Co73.3(Fe, Ni, Mo, Mn)5.7(Si0.2B0.8)21 in aqueous solutions of HCl, NaCl, and NaOH was investigated. The Co72.0Fe5.0Si11.0B12.0 alloy demonstrated the lowest corrosion resistance in all investigated aggressive environments. Partial replacement of Co and Fe by Mn, as well as Ni and Mo, slightly increases the corrosion resistance of the material due to the formation of dense oxide layers on the surface.