Liquid-liquid phase separation of an electrolyte at metals deposition on the surface of a steel plate under the influence of two-domain magnetic system

• Published in: Journal of molecular liquids 2017-06, Vol.235, p.163-171
• Main Authors: Gorobets, О.Yu, Gorobets, Yu.І., Rospotniuk, V.P., Kyba, A.A., Grebinaha, V.I.
• Format: Article
• Language: English
• Subjects: Effective magnetic susceptibility; Gradient magnetic field; Hydrostatic equilibrium; Magnion; Quasi-stationary state
• ISSN: 0167-7322; 1873-3166
• DOI: 10.1016/j.molliq.2016.11.024

The formation and dynamic of expansion and deformation of the liquid-liquid interface of an electrolyte at deposition of metals from aqueous solutions CuSO4 and CuSO4+MnSO4 at the surface of the magnetized steel plate is considered in this paper. The electrochemical processes were investigated in the non-uniform stray magnetic field created by two-domain magnetic system. These processes are accompanied by the formation of effectively paramagnetic clusters of electrochemical products – magnions. The influence of the adding of chemically inert ions Mn+2 on the shape of interfacial surface and the magnitude of effective magnetic susceptibility of a magnion were investigated. Tyndall effect, optical and scanning electron microscopes were used for detection of the presence of magnions near the magnetized steel electrode in a solution. The shape of the interface separating the regions with different concentration of magnions, i.e. different magnetic susceptibilities, was described theoretically based on the equation of hydrostatic equilibrium which takes into account magnetic, hydrostatic and osmotic pressures. •The influence of inhomogeneous magnetic field on liquid-liquid phase formation was investigated.•The formation of clusters of electrochemical transformation products (magnions) was studied.•Magnions possess by effective magnetic susceptibility that manages the changing of directed effects to inverse and vice versa.•Addition of chemically inert ions changes the magnitude of effective magnetic susceptibility.