Main Article Content

L. О. Solyanyk


This article is devoted to the study of resonance in tungsten-containing melts. Modes of oscillations of characteristic particles of melts are briefly characterized. The analysis of IR spectra for tungstate anion and EAR made it possible to establish a change in vibration frequencies (mainly valence symmetric) and an increase in vibration amplitude by approximately 1.5 times, proving the role of cationic catalysis in complexation processes. The conditions of frequency resonance, which is the basis of complexation, are shown for a number of chemical compounds formed during resonant oscillations using the example of characteristic particles of tungstate-containing ionic melts. A quantum-chemical and analytical calculation of the characteristics of particles in the near-electrode layer was carried out: reorganization energy within the framework of the model of conducting ellipsoids, the ratio of "dielectric/metal" exchange currents, etc.

In general, the ratio of currents depends not only on the features of the zonal structure of the solid body, but also on the physical and chemical characteristics of the structural particles of the polar liquid.

Thus, the analysis of the obtained results, in our opinion, provides grounds for substantiating the possibility of joint electroreduction of melt particles on the diamond surface, which is achieved in the presence, firstly, of carbonate-containing melt particles - СО2. Secondly, the mere presence of CO2 particles in a tungsten-containing melt is not enough for tungsten deposition. To implement the joint electroreduction of carbon and tungsten during the high-temperature electrochemical synthesis of tungsten carbides, the presence of strongly polarizing cations is necessary, i.e., the course of heterogeneous red|ox reactions is possible only for particles of the type Mnm+[WO4]2-}(nm-2)+ in the presence of CO2, which in practice allows joint electroreduction by combining the potentials of carbon and tungsten release, changing the acidity of the melt (cationic catalysis), and at the same time changing the phase composition of electrolysis products and their nanostructure.

Article Details

Materials Physics
Author Biography

L. О. Solyanyk, Research associate A.V. Dumansky Institute of Colloid and Water Chemistry, Kiev, Ukraine

Phd, Assistant Professor

Research associate A.V. Dumansky Institute of Colloid and Water Chemistry

Kiev, Ukraine


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