Reaction behavior of Ni–Re alloys during direct current polarization in sulfuric acid solutions
- Authors: Bryukvin V.A.1, Elemesov T.B.1, Levchuk O.M.1, Bol’shikh A.O.1
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Affiliations:
- Baikov Institute of Metallurgy and Materials Science
- Issue: Vol 2016, No 1 (2016)
- Pages: 12-17
- Section: Article
- URL: https://journals.rcsi.science/0036-0295/article/view/170313
- DOI: https://doi.org/10.1134/S0036029516010079
- ID: 170313
Cite item
Abstract
The macrokinetic regularities of the reactivity of synthesized Ni–Re (20 and 60 wt %) alloys in a sulfuric acid solution (100 g/L, 25–40°C) during direct current polarization are studied using physicochemical methods. The phase composition of the synthesized alloys is determined by the formation of solid solutions as a function of the initial Ni/Re weight ratio. These are two types of nickel solid solutions (Ni16Re0.2 and Ni14Re0.9) and one rhenium solution (Ni1.1Re). These solid solutions are anodically oxidized in the sequence of their structural rearrangement Ni16Re0.2 → Ni14Re0.9 → Ni1.1Re with a combined transition of the metals into an electrolyte solution. These solid solutions provide the reduction of Ni3+ to Ni2+ due to the depolarization ability of rhenium, being their component.
About the authors
V. A. Bryukvin
Baikov Institute of Metallurgy and Materials Science
Author for correspondence.
Email: brukvin@imet.ac.ru
Russian Federation, Leninskii pr. 49, Moscow, 119991
T. B. Elemesov
Baikov Institute of Metallurgy and Materials Science
Email: brukvin@imet.ac.ru
Russian Federation, Leninskii pr. 49, Moscow, 119991
O. M. Levchuk
Baikov Institute of Metallurgy and Materials Science
Email: brukvin@imet.ac.ru
Russian Federation, Leninskii pr. 49, Moscow, 119991
A. O. Bol’shikh
Baikov Institute of Metallurgy and Materials Science
Email: brukvin@imet.ac.ru
Russian Federation, Leninskii pr. 49, Moscow, 119991