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Study of the Anodic Behavior of the Chromium-Doped Zn55Al Alloy in Corrosive Environments

  • Applied Electrochemistry and Metal Corrosion Protection
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Abstract

The results of a study of the anodic behavior of the chromium-doped Zn55Al alloy in HCl, NaCl, and NaOH electrolyte media at various pH values of the medium are presented. It is shown that for all samples of chromium-doped alloys, compared to the original Zn55Al alloy, there is a shift in the electrochemical potentials of corrosion, pitting, and repassivation to the region of positive values. Alloys containing 0.01–1.0 wt % chromium are the most resistant to pitting corrosion in the pH range of 3–10. It was established that the corrosion rate of alloys doped with (0.01–0.1%) chromium is 1.5–2 times lower than that of the Zn55Al alloy. Alloy corrosion products consist of a mixture of Al2O3, ZnO, ZnAl2O4, Al2O3·Cr2O3 oxides.

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Authors and Affiliations

  1. Nikitin Institute of Chemistry, National Academy of Sciences, 734063, Dushanbe, Tajikistan

    Sh. G. Radzhabova, R. N. Amini, I. N. Ganiev & Z. R. Obidov

Authors
  1. Sh. G. Radzhabova
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  2. R. N. Amini
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  3. I. N. Ganiev
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  4. Z. R. Obidov
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Correspondence to Z. R. Obidov.

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Translated from Zhurnal Prikladnoi Khimii, No. 4, pp. 524–530, March, 2022 https://doi.org/10.31857/S0044461822040144

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Radzhabova, S.G., Amini, R.N., Ganiev, I.N. et al. Study of the Anodic Behavior of the Chromium-Doped Zn55Al Alloy in Corrosive Environments. Russ J Appl Chem 95, 582–587 (2022). https://doi.org/10.1134/S1070427222040152

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  • DOI: https://doi.org/10.1134/S1070427222040152

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