Voltammetric and chronopotentiometric study of nonstationary processes at the oxygen-evolving anodes in KF–NaF–AlF3–Al2O3 melt / Suzdaltsev A., Khramov A., Kovrov V., Limanovskaya O., Nekrasov V., Zaikov Y. // Materials Science Forum. - 2016. - V. 844, l. . - P. 19-26.

ISSN:
02555476
Type:
Conference Paper
Abstract:
Some features of behavior and kinetic of the anodic processes for the platinum and Cu– Fe–Ni alloy in the KF–NaF–AlF3–Al2O3 melts at 1025–1055 K have been studied by cyclic voltammetry and chronopotentiometry. The obtained results allowed us to conclude that mechanisms of the anodic processes at the platinum and Cu–Fe–Ni alloy are similar. Both mechanisms include the oxidation stage of electrode material. A rate of this stage is determined to depend significantly on the melt temperature. © 2016 Trans Tech Publications, Switzerland.
Author keywords:
Chronopotentiometry; Cu–Fe–Ni alloy; Oxide-fluoride melt; Oxygen-evolving anode; Platinum; Voltammetry
Index keywords:
Aluminum; Anodes; Corrosion; Electrodes; Nickel; Platinum; Platinum alloys; Surface treatment; Voltammetry; Anodic process; Chronopotentiometry; Electrode material; Melt temperature; Ni alloys; Nonsta
DOI:
10.4028/www.scientific.net/MSF
Смотреть в Scopus:
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84959859367&doi=10.4028%2fwww.scientific.net%2fMSF.844.19&partnerID=40&md5=dd2b6163058cca94a80381ec8c8fac70
Соавторы в МНС:
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Поле Значение
Link https://www.scopus.com/inward/record.uri?eid=2-s2.0-84959859367&doi=10.4028%2fwww.scientific.net%2fMSF.844.19&partnerID=40&md5=dd2b6163058cca94a80381ec8c8fac70
Affiliations Institute of High-Temperature Electrochemistry UB RAS, Yekaterinburg, Russian Federation; Ural Federal University, Yekaterinburg, Russian Federation
Author Keywords Chronopotentiometry; Cu–Fe–Ni alloy; Oxide-fluoride melt; Oxygen-evolving anode; Platinum; Voltammetry
References Nekrasov, V.N., Suzdaltsev, A.V., Limanovskaya, O.V., Khramov, A.P., Zaikov, Y.P., Theoretical and experimental study of anode process at the carbon in KF–AlF3–Al2O3 melts (2012) Electrochim. Acta, 75, pp. 296-304; Yang, J., Hryn, J.N., Davis, B.R., Roy, A., Krumdick, G.K., Pomykala, J.A., Jr., New opportunites for aluminum electrolysis with metal anodes in a low temperature electrolyte system (2004) Light Metals, pp. 321-326; Helle, S., Pedron, M., Assouli, B., Davis, B., Guay, D., Roue, L., Structure and hightemperature oxidation behaviour of Cu–Ni–Fe alloys prepared by high-energy ball milling for application as inert anodes in aluminium electrolysis (2010) Corrosion Science, 52, pp. 3348-3355; Nekrasov, V.N., Limanovskaya, O.V., Suzdaltsev, A.V., Khramov, A.P., Zaikov, Y., Stationary anodic process at platinum in KF–NaF–AlF3–Al2O3 melts, Rus (2014) Metallurgy, 8, pp. 664-700; Suzdaltsev, A.V., Khramov, A.P., Zaikov, Y., Carbon electrode for electrochemical studies in cryolite-alumina melts at 700–960°C (2012) Rus. J. Electrochem, 48, pp. 1141-1152; Robert, E., Olsen, J.E., Danek, V., Tixhon, E., Ostvold, T., Gilbert, B., Structure and thermodynamics of alkali fluoride-aluminum fluoride-alumina melts. Vapor pressure, solubility, and Raman spectroscopic studies (1997) J. Phys. Chem. B, 101, pp. 9447-9457; Danek, V., Gustavsen, O.T., Ostvold, T., Structure of the MF–AlF3–Al2O3 (M = Li, Na, K) melts (2000) Can. Met. Quart, 39, pp. 153-162; Khramov, A.P., Shurov, N.I., Modern views on the composition of anionic oxy-fluoride complexes of aluminium and their rearrangement during the electrolysis of cryolite-alumina melts (2014) Rus. Metallurgy, 8, pp. 581-592; Livingstone, S., (1975) Rhenium, Rhodium, Palladium, Osmium, Iridium and Platinum, , Pergamon, Oxford; Dewing, E.W., Van Der Kouwe, E., Anodic phenomena in cryolite-alumina melts 1. Chronopotentiometry at gold and platinum anodes (1977) J. Electrochem. Soc, 124, pp. 58-64; Bard, A.J., Faulkner, L.R., (2001) Electrochemical Methods: Fundamentals and Applications, , 2nd ed, John Wiley & Sons Inc., NY; Filatov, A., Borzenko, M.I., Kuzminova, Z.V., Vassiliev, S., Kazakov, S.M., Antipov, E.V., Lunin, V.V., Electrochemical equilibria in copper/cryolite-alumina melt systems (2008) Mendeleev Comm, 18, pp. 244-245; Khramov, A.P., Kovrov, V.A., Zaikov, Y., Chumarev, V.M., Anodic behaviour of the Cu82Al8Ni5Fe5 alloy in low-temperature aluminium electrolysis (2012) Corrosion Science, 70, pp. 194-202; Gallino, I., Kassner, M.E., Busch, R., Oxidation and corrosion of highly alloyed Cu–Fe–Ni as inert anode material for aluminum electrowinning in as-cast and homogenized conditions (2012) Corrosion Science, 63, pp. 293-303
Correspondence Address Suzdaltsev, A.; Institute of High-Temperature Electrochemistry UB RASRussian Federation; email: suzdaltsev_av@mail.ru
Editors Halama M.
Sponsors Metrohm Autolab BV;Pragolab;ScienceTech and Straaltechniek International"
Publisher Trans Tech Publications Ltd
Conference name International Conference on Corrosion and Surface Treatment in Industry, 2015
Conference date 30 September 2015 through 2 October 2015
Conference code 168389
ISBN 9783038355250
CODEN MSFOE
Language of Original Document English
Abbreviated Source Title Mater. Sci. Forum
Source Scopus