Effect of Cathodic Polarization on the Depassivation of Oxidized Nickel
- Autores: Kuznetsova O.1, Levin A.1, Tsybin O.1, Sevost’yanov M.1, Bryukvin V.1, Bol’shikh A.1
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Afiliações:
- Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences
- Edição: Volume 2018, Nº 7 (2018)
- Páginas: 651-654
- Seção: Article
- URL: https://journals.rcsi.science/0036-0295/article/view/171997
- DOI: https://doi.org/10.1134/S0036029518070078
- ID: 171997
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Resumo
The dissolution of nickel in sulfuric acid (100 g/L) is studied by cyclic voltammetry using intermediate cathodic polarization between cycles. The main laws of the joint effect of the potential (from –2.0 to ‒0.2 V) and the duration (32–1800 s) of cathode pulses on the metal depassivation are revealed. Anode nickel oxide films are found to disappear during cathodic polarization of the metal as a result of simultaneous processes of reduction and chemical dissolution of oxides in the electrolyte.
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Sobre autores
O. Kuznetsova
Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences
Email: levinn@imet.ac.ru
Rússia, Moscow, 119334
A. Levin
Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences
Autor responsável pela correspondência
Email: levinn@imet.ac.ru
Rússia, Moscow, 119334
O. Tsybin
Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences
Email: levinn@imet.ac.ru
Rússia, Moscow, 119334
M. Sevost’yanov
Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences
Email: levinn@imet.ac.ru
Rússia, Moscow, 119334
V. Bryukvin
Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences
Email: levinn@imet.ac.ru
Rússia, Moscow, 119334
A. Bol’shikh
Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences
Email: levinn@imet.ac.ru
Rússia, Moscow, 119334
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