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A new technology of (CrCoNiFeTi)C system coatings formation with using ion sputtering of a rod consisting of disks made of corresponding metals and carbon is proposed. The coating elemental composition is in good agreement with metals and carbon distribution along the sputtered rod. As established using scanning, transmission electron microscopy and energy-dispersive elemental analysis, the coatings consist of fine polycrystals with grains' sizes of few nanometers. An increase in carbon concentration from 14 to 48 at.% leads to titanium carbidization and to decreasing in the roughness of coatings surface. As a result, the coatings microhardness increases from 7 to 27 GPa. [ABSTRACT FROM AUTHOR]

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.)

In this paper, the physical preconditions for the condensate formation in the form of porous nanosystems are analysed. Porous Zn and Ni nanosystems are obtained using a technological approach based on self-organization of low relative supersaturations of deposited vapours. Then, these layers are further used as precursors for the deposition of porous turbostratic graphite. At the first stage, precursors in the form of porous Ni or Zn nanosystems are formed on laboratory glass. At the second stage, carbon condensate is deposited by graphite sputtering. All carbon condensates are formed on the base porous Zn and Ni structures at the same technological parameters (pAr=7 Pa and Pw=80 W) that allows determining the effect of the material and structural–morphological characteristics of precursors on the structure formation of the carbon layers. The effective thickness of the carbon layers is of approximately 12–15 μm. As shown, the different morphology of porous zinc precursors has almost no effect on the further structure formation of the porous carbon nanosystems. At the same time, at the transition to precursors in the form of porous Ni systems, the structure of carbon condensates has a more developed porosity at the nanoscale. Comprehensive investigation of the obtained porous C/Zn and C/Ni composites is carried out using scanning electron microscopy, energy-dispersive x-ray spectroscopy, and x-ray phase analysis. As shown, in the local areas of accumulated turbostratic graphite, the preconditions for the nucleation and growth of carbon nanowalls, fibres, or diamond inclusions are formed. It is concluded that the technological approach discussed in the paper can be used to create electrodes of lithium-ion batteries. [ABSTRACT FROM AUTHOR]

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 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.)

Fractal-percolation ZnO nanosystems were obtained in the form of interconnected nanowires with a close to stoichiometric elemental composition and with hexagonal lattice parameters suitable for zinc oxide. For the first time, the possibility of recognizing such reagents as acetone, methanol and methanebutane mixture is shown on the basis of studies of current-voltage characteristic in fractal-percolation ZnO nanosystems. The assumption that charge transfer and, as a result, current voltage characteristics are defined by radiuses of separate nanowires which it is less, than length of Debye screening is made. Thus the adsorption-desorption reactions of various reagents on the surface of the nanowires lead to the formation of clusters, various on a configuration, in turn provide current voltage characteristics, different in character. [ABSTRACT FROM AUTHOR]

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.)