Equilibrium and Kinetic Properties of Methane Hydrate

During methane dissolution in water in a closed space, the pressure varies exponentially with time until the formation of methane hydrate. A model of this process is proposed that fits experimental data well. The methane concentration at the onset of hydrate formation is calculated as a function of temperature and pressure.     

Inverse skin effect

Analytical expressions describing the distribution of the magnetic field and the current density in a cylindrical conductor are obtained in the case of rapid oscillatory variation of the external field. When the field decreases, the system features the inverse skin effect, whereby the current density is maximum in the central part of the conductor.     

Study of the possibility to synthesize nanocarbon at electric discharge in solutions of organic acids. Part I: Choosing the working fluid and generator parameters

The conditions necessary for performing a pulse corona discharge with a continuous plasma mass in a liquid containing carbon are determined. The organic compositions used as electrolytes have been chosen. There is proposed an approach to calculate the external controlled parameters of the pulse generator.     

Tribological properties of nanocarbon obtained by the electrodischarge method

A new electrodischarge method for obtaining of nanocarbon materials by treatment of organic liquids is proposed. Efficient modes of electrodischarge techniques for obtaining of new promising carbon powders comprising diamond-like nanoparticles, nanotubes, and nanofibers are determined. The tribological properties of these powders are studied. It is shown that the application of nanocarbon powders in the contact area of the surface friction makes it possible to reduce the wear and to enhance the operation factors.     

Electrodischarge treatment of alcohols to produce carbonic nanomaterials

The method and products of the electrodischarge treatment of alcohols have been studied. The method of separation of the CNM produced from inferior alcohols by the high-voltage electrophoresis method has been proposed and tested. As the X-ray diffraction analysis results show, the application of only the electrophoresis method is not enough for the complete separation of the crystallites into the different allotropic forms of carbon. It is necessary to use complex methods of the CNM enrichment.     

Investigation of the Heating Dynamics and Properties of Liquid Tungsten

The dynamics of electrical explosion of tungsten wires under water in microsecond times was studied. A new optical method for temperature measurement has been developed. For tungsten, uniform heating took place at 10¹¹<j(A·m^–2)<10¹², therefore one can use these regimes for the investigation of properties in the liquid phase. Temperature dependences of enthalpy, electrical resistivity, and specific heat for liquid tungsten are given and compared with literature values.     

Obtaining ultrafine metal powders under electric explosion of conductors in liquid: Part III. The optimum mode for explosion of conductors in gases; Comparison with explosion in liquid

The electric explosion of nickel-containing conductors is experimentally studied for the optimum mode in air. The results of explosion of conductors in air and in water are compared. It is shown that explosion in air of conductors completely identical to those exploded in water leads to a change in the discharge duty. The conditions required for the optimum mode of explosion of conductors in air are determined.     

Production of metal-carbon composite nanomaterials by the electrodischarge method

The possibility to produce metal-carbon nanocomposite materials by the electrodischarge method is studied. The morphological characteristics, composition, and electrical conductivity of powder samples of the produced metal-carbon nanomaterials are determined.     

Production of carbonic nanomaterials in the course of electrodischarge treatment of organic liquids

The processes of electrodischarge destruction of liquid hydrocarbons to produce carbon nanomaterials have been studied. It has been shown that the product yield increases with the growth of the carbon chain length of the initial hydrocarbon. It has been established that, in the course of the treatment, both solid carbon nanomaterials and gas products are formed. The gas products consist of hydrogen and low molecular weight alkanes. It is shown that the hydrocarbon destruction process is accompanied by the change of the carbon atom hybridization, thus influencing the qualitative composition of the carbon nanomaterials.