Influence of the pH of the medium on the anodic behavior of scandium-doped Zn55Al alloy
| Autor: | Z. R. Obidov, I. N. Ganiev, A. V. Amonova |
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| Rok vydání: | 2013 |
| Předmět: |
Materials science
Alloy Doping Inorganic chemistry technology industry and agriculture Metals and Alloys chemistry.chemical_element Electrolyte engineering.material equipment and supplies Chloride Surfaces Coatings and Films Corrosion Anode chemistry Coating Mechanics of Materials engineering medicine Scandium medicine.drug |
| Zdroj: | Russian Journal of Non-Ferrous Metals. 54:234-238 |
| ISSN: | 1934-970X 1067-8212 |
| DOI: | 10.3103/s1067821213030115 |
| Popis: | The anodic behavior of the Zn55Al scandium-doped alloy is investigated. The extreme character of the dependence of the corrosion potential of this material on the content of Sc in it is shown and it is established that an increase in the concentration of chloride ions in the electrolyte promotes a decrease in this characteristics. The pitting-formation and repassivation potential displace to the positive region as the content of the doping elements in the alloys increases, while as the concentration of chloride ions decreases, they shift to the negative region over the entire pH range of the medium. The corrosion rate of the Zn55Al alloy decreases by a factor of 2–3 with the addition of 0.005–0.05 wt % Sc into it, which makes it possible to recommend an alloy of this composition as an anode coating for the anticorrosion protection of steel constructions, wares, and buildings. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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