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Copyright of Metallophysics & Advanced Technologies / Metallofizika i Novejsie Tehnologii is the property of G.V. Kurdyumov Institute for Metal Physics, N.A.S.U and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Recent Contributions to Physics is the property of Al-Farabi Kazakh National University and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

This paper features the construction, operation and research on high-temperature electrical insulation at working temperatures up to 2000 ºC. Investigations were carried out on the existing MH- generator using a specifically developed insulation module and device for continuous measurement and recording of the resistance and dielectric strength of the insulation under AC current. The studies were conducted using an alternating current in order to reduce the influence of high temperature dielectric polarization on the measurements. The resistance value of the electrical insulation of the electrodes relative to the grounded housing of the MGDG channel and interelectrode insulation resistance pattern during changing operating regimes of MGDG were investigated in the area of the flow of the combustion products at temperatures up to 3000 ºC. It was established that the resistance of the interelectrode insulation is determined by its surface resistance. The magnitude of the surface resistance depends on the type of the gas atmosphere in the channel such that the oxidative environment increases the surface resistance and reducing environment decreases it. Under the same temperature conditions the range of changes in the resistance of the interelectrode insulation in the channel was 3-4 orders of magnitude lower than the resistivity of the dielectric (MgO) in pure oxidizing atmosphere of the research apparatus. At temperatures above ~1300 ºC surface resistance is increasingly determined by the properties of the dielectric. References 12, figures 6. [ABSTRACT FROM AUTHOR]

In this paper, we analyze the body of scientific data on the effect of disperse filling of salt systems by oxide materials. Emphasized here is the nano-sized TiO2 as a disperse filler. The experimental data shows that the 5,9 V electrochemical window of pure and filled ionic liquid PYR14 TFSI with the increased (to 30 %) electrical conductivity is stable. Such windows allow PYR14 TFSI filled by nano-sized TiO2 to be used with very strong reducing and oxidizing electrode agents, yielding high cell voltage. Additionally, we consider various models for the disperse filling effect and discuss this effect on supercooling and glass transition. [ABSTRACT FROM AUTHOR]

The paper determines the conditions of obtaining granules from refractory materials by granulation of their plasticized stock, atomization by a spinning electrode, melting in the low-temperature plasma by a consumable electrode, compaction followed by sintering and crushing. [ABSTRACT FROM AUTHOR]

The paper implemented the model calculation of spark discharge diameter, presented in form of dependency on diameter of cross sectional area of electrodes, voltage and parameters of gaseous medium in which electrospark processing. Determined ratio of estimated coefficient due to stress and average distance between electrode and workpiece (anode - electrode, cathode - detail).