Oxygen-Ion Implantation into Cu50Ni50 Alloy: Effect on the Surface Composition and the Electrochemical and Corrosion Properties

— The composition and certain properties of the surface layer produced by oxygen-ion implantation into the Cu 50 Ni 50 alloy are studied. Oxygen-ion implantation is shown to result predominantly in the oxidation of nickel, which is the more electronegative component of the alloy. Different forms of...

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Bibliographic Details
Published in:Surface investigation, x-ray, synchrotron and neutron techniques x-ray, synchrotron and neutron techniques, 2020, Vol.14 (1), p.191-199
Main Authors: Gil’mutdinov, F. Z., Kartapova, T. S., Bakieva, O. R., Vorob’ev, V. L., Kolotov, A. A., Borisova, E. M., Reshetnikov, S. M.
Format: Article
Language:English
Subjects:
Chemistry and Materials Science
Composition effects
Corrosion effects
Electronegativity
Ion implantation
Materials Science
Nickel
Oxidation
Oxygen reduction reactions
Surface layers
Surfaces and Interfaces
Thin Films
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Summary:— The composition and certain properties of the surface layer produced by oxygen-ion implantation into the Cu 50 Ni 50 alloy are studied. Oxygen-ion implantation is shown to result predominantly in the oxidation of nickel, which is the more electronegative component of the alloy. Different forms of nickel oxide are concentrated mainly on the alloy surface. These oxide layers enhance the propensity of the alloy to passivation and a decrease in anodic currents in alkaline media. The effect of oxygen-ion implantation on the behavior of the alloy in neutral and acidic media is less obvious. Oxygen-ion implantation enhances the electrochemical activity of the alloy toward the oxygen-reduction reaction.
ISSN:1027-4510
1819-7094
DOI:10.1134/S1027451020020081