Parameters of the elasticity of TiNi and TiFe intermetallides
S. A. Muslov, A. I. Lotkov
Despite the correlation between elasticity and other properties, among the macroscopic characteristics of solids, elastic properties play a crucial role in the analysis of the loss of stability of the crystal lattice of materials to phase transitions. For shear-type transitions, such as martensitic transformations in metals and alloys, the study of the elastic parameters of crystal structures: moduli and constants, anisotropy, Poisson’s ratio and others is of particular importance. The surfaces and their central sections of Young’s moduli and crystal shift, as well as the Poisson’s ratio of TiFe and TiNi crystals, stable and with martensitic transformations are obtained. Extreme values of the elastic properties and the ratio of the maximum values to the minimum values are determined. The effective values of the elastic moduli and Poisson’s ratio are calculated from the data on elastic constants and the compliance coefficients of materials. A study of single crystals of intermetallic compounds on auxeticity was made.
Key words: elastic constants, moduli of elasticity, Poisson’s ratio, anisotropy, auxetics, martensitic transformations, shape memory alloys.
DOI: 10.30791/1028-978X-2018-11-5-16
Muslov Sergey — A.I. Evdokimov Moscow State Medical Stomatological University (MSMSU, 127473 Moscow, Delegatskaya, 20, bd. 1), Dr Sci (Biolog), professor of the department of Normal Physiology and Medical Physics, specialist in the field of materials science of alloys with shape memory. E-mail: muslov@mail.ru.
Lotkov Aleksander — Institute of Strength Physics and Materials Science of Siberian Branch of Russian Academy of Sciences (Tomsk, 634055, 2/4, pr. Akademicheskii), Dr Sci (Phys-Math), professor, head of material science laboratory of shape memory alloys, specialist in the field of physics of metals. E-mail: lotkov@ispms.ru.
Reference citing
Muslov S. A., Lotkov A. I. Parametry uprugosti monokristallov intermetallidov TiNi i TiFe. [Parameters of the elasticity of TiNi and TiFe intermetallides]. Perspektivnye Materialy — Advanced Materials (in Russ), 2018, no. 11, pp. 5 – 16. DOI: 10.30791/1028-978X-2018-11-5-16
Magnetic nanodispersed lubricants based
on organosilicon fluids
A. N. Bolotov, O. O. Novikova
The paper rationalizes the expediency of using dispersion medium based on organosilicon fluids for producing new-generation magnetic lubricating oils. It gives recommendations on choosing a dispersed magnetic phase. There is an original approach to choosing surfactants intended to stabilize a magnetic oil colloidal structure, which takes into account their dielectric properties and particularities of the effect on friction. The paper gives the data on preliminary choice of additives and fillers for magnetic oil. It also establishes the effectiveness of additives under various operating conditions of a friction unit with magnetic oil. There are also technological features of a synthesis of lubricating oils based on polyethylsiloxane PES-5 and chlorphenylsiloxane KhS-2-1VV containing nanosized magnetite. The authors investigate lubricating properties of magnetic oils based on oligodoethylsiloxane and oligomethyl(chlorophenyl)siloxane under various friction conditions and show their specific features. They also analyze in detail the influence of various additives and fillers on tribotechnical characteristics of magnetic oils. Consequently, they reveal a different mechanism of the influence of additives on frictional contact properties and propose its description. According to the magnetic oil test results, the authors determine compositions that are most promising for practical use in tribounits. It is established that the new magnetic oil service life is comparable with transmission oils, for example TM-5-18, and two or three orders of magnitudes greater than grease lubricant service life.
Keywords: magnetic lubricating oil, friction, wear, lubrication, dispersion medium, magnetic dispersed phase, antifriction and antiwear additives.
DOI: 10.30791/1028-978X-2018-11-17-32
Bolotov Alexander — Tver State Technical University (Tver, 170026, A. Nikitin Quay, 22), Dr Sci (Eng), professor, head of Applied physics department, expert in tribology, materials science and synthesis of nanomaterials. E - mail: alnikbltov@rambler.ru.
Novikova Olga — Tver State Technical University (Tver, 170026, A. Nikitin Quay, 22), Ph.D. (Eng), associate professor, department of Applied physics, expert in tribology and materials science. E-mail: onvk@mail.ru.
Reference citing
Bolotov A. N., Novikova O. O. Magnitnye nanodispersnye smazochnye materialy na osnove kremnijorganicheskih zhidkostej [Magnetic nanodispersed lubricants based on organosilicon fluids]. Perspektivnye Materialy — Advanced Materials (in Russ), 2018, no. 11, pp. 17 – 32. DOI: 10.30791/1028-978X-2018-11-17-32
Photoconductivity of indium oxide films dopped
by Ga in ultraviolet spectral region
A. E. Muslimov, V. M. Kanevski
Photoconductive properties of polycrystalline films of mainly cubic modification In2O3 doped by gallium (up to 16 %) received by method of high-temperature solid-phase oxidation and synthesis on the rhombohedral plane of sapphire are investigated. According to x-ray diffraction in films presence of rhombohedral modification of In2O3 is revealed. Their structural and electrophysical characterization is executed. Are shown that samples have high sensitivity about 10–2 A/W, coefficient of increase in 400 % at a voltage of 0.01 V and photoconductivity relaxation time about 3 hours in the area of lengths of waves < 325 nm. Alloying of atoms of gallium leads to expansion of the forbidden zone in In2O3. The technique of sharp heating of a sample for suppression of current of nonequilibrium carriers and decrease in time of a relaxation to the 1 – 2 s is offered. Presumably, in samples the model of a long relaxation of photoconductivity connected with capture of nonequilibrium carriers of current traps, interfering a recombination of the carriers generated by lighting is implemented.
Keywords: photoconductivity, films, diffraction.
DOI: 10.30791/1028-978X-2018-11-33-38
Muslimov Arsen — Shubnikov Institute of Crystallography of Federal Scientific Research Centre “Crystallography and Photonics” of Russian Academy of Sciences, Leninskiy Prospekt 59, 119333, Moscow, Russia, PhD (Phys-Math), expert in the field of growth of thin films and their characterization. E-mail: amuslimov@mail.ru.
Kanevsky Vladimir — Shubnikov Institute of Crystallography of Federal Scientific Research Centre “Crystallography and Photonics” of Russian Academy of Sciences, Leninskiy Prospekt 59, 119333, Moscow, Russia, Dr Sci (Phys-Math), head of laboratory, expert in the field of growth of thin films and their characterization.
Reference citing
Muslimov A. E., Kanevski V. M. Fotoprovodimost' plenok oksida indiya legirovannyh galliem v ul'trafioletovoj oblasti [Photoconductivity of indium oxide films dopped by Ga in ultraviolet spectral region]. Perspektivnye Materialy — Advanced Materials (in Russ), 2018, no. 11, pp. 33 – 38. DOI: 10.30791/1028-978X-2018-11-33-38
Investigation of cytotoxic and mechanical
properties of polylaсtide films depending
on molecular weight of polymer
M. A. Sevostyanov, E. O. Nasakina, A. S. Baikin, K. V. Sergienko,
M. A. Kaplan, S. V. Konushkin, A. A. Kolmakova, A. D. Yakubov,
S. V. Gudkov, L. A. Shatova, A. G. Kolmakov
A number of polymeric films of different thicknesses were obtained on the basis of polylactide with different molecular weights. Poly-D, L-lactide with molecular weights of 45, 90 or 180 kD polymers was used to make the films. Polylactide was dissolved in chloroform to final concentrations of 1, 3 or 5 %. The mechanical characteristics of these films are investigated. The increase in the molecular weight of the polylactide used to make the polymer film leads to a decrease in thickness, while the ductility increases and the strength decreases. An increase in the concentration of polylactide in a solvent in the manufacture of a polymer film leads to an increase in the thickness of the polymer layer and plasticity, but decreases the strength. It is shown that the films obtained have better mechanical characteristics than comparable films. The biocompatibility of the resulting films on the cells of human neuroblastoma SH-SY5Y was studied. It is shown that polymer films do not have a short-term toxic effect on mammalian cells. More than 2.4 % of cells growing on polymer films are actively dividing cells. The mitotic index on the polymeric films obtained in the work is 1.6 – 2.4 times higher than when grown on a culture glass. The polylactide-based polymer films we obtained are biocompatible.
Key words: biocompatibility, biodegradable materials, polylactide, polymeric membranes, yield strength and strength, elongation of polymers.
DOI: 10.30791/1028-978X-2018-11-39-49
Sevostyanov Mikhail — Baikov Institute of Metallurgy and Materials Science of Russian Academy of Sciences (Moscow, 119334, Leninsky Prospect, 49), PhD (Eng), head of laboratory, specialist in metal and composite materials and nanomaterials. E-mail: cmakp@mail.ru.
Nasakina Elena — Baikov Institute of Metallurgy and Materials Science of Russian Academy of Sciences (Moscow, 119334, Leninsky Prospect, 49), PhD (Eng), senior researcher, specialist in metal and composite materials and nanomaterials. E-mail: nacakina@mail.ru.
Baikin Alexander — Baikov Institute of Metallurgy and Materials Science of Russian Academy of Sciences (Moscow, 119334, Leninsky Prospect, 49), junior researcher, specialist in strength and plasticity of metal and composite materials. E-mail: baikinas@mail.ru.
Sergienko Konstantin — Baikov Institute of Metallurgy and Materials Science of Russian Academy of Sciences (Moscow, 119334, Leninsky Prospect, 49), junior researcher, specialist in strength and plasticity of metal and composite materials. E-mail: shulf@yandex.ru.
Kaplan Mikhail — Baikov Institute of Metallurgy and Materials Science of Russian Academy of Sciences (Moscow, 119334, Leninsky Prospect, 49), junior researcher, specialist in strength and plasticity of metal and composite materials. E-mail: mishakaplan@yandex.ru.
Konushkin Sergey — Baikov Institute of Metallurgy and Materials Science of Russian Academy of Sciences (Moscow, 119334, Leninsky Prospect, 49), junior researcher, specialist in strength and plasticity of metal and composite materials. E-mail: venev.55@mail.ru.
Kolmakova Anastasiya — Baikov Institute of Metallurgy and Materials Science of Russian Academy of Sciences (Moscow, 119334, Leninsky Prospect, 49), engineer-researcher, specialist in strength and plasticity of metal and composite materials. E-mail: fairy.anastasiya@mail.ru.
Yakubov Alexey — Baikov Institute of Metallurgy and Materials Science of Russian Academy of Sciences (Moscow, 119334, Leninsky Prospect, 49), engineer-researcher, specialist in strength and plasticity of metal and composite materials. E-mail: yaaleksey777@gmail.com.
Gudkov Sergey — Prokhorov Institute of General Physics of the Russian Academy of Sciences (119991, Moscow, Vavilov St., 38), Dr Sci (Biolog), leading researcher, specialist in biophysics. E-mail: S_makariy@rambler.ru.
Shatova Lyudmila — Voronezh State Technical University (VSTU, 394006, Voronezh, street of 20 years of October, 84), leading specialist, specialist in titanium alloys. E-mail: shatovala@mail.ru.
Kolmakov Aleksey — Baikov Institute of Metallurgy and Materials Science of Russian Academy of Sciences (Moscow, 119334, Leninsky Prospect, 49), corr.-member of RAS, deputy director, specialist in metal and composite materials and nanomaterials. E-mail: kolmakov@imet.ac.ru.
Reference citing
Sevostyanov M. A., Nasakina E. O., Baikin A. S., Sergienko K. V., Kaplan M. A., Konushkin S. V., Kolmakova A. A., Yakubov A. D., Gudkov S. V., Shatova L. A., Kolmakov A. G. Issledovanie citotoksicheskih i mekhanicheskih svojstv plenok iz polilaktida razlichnoj molekulyarnoj massy. [Investigation of cytotoxic and mechanical properties of polylaсtide films depending on molecular weight of polymer]. Perspektivnye Materialy — Advanced Materials (in Russ), 2018, no. 11, pp. 39 – 49. DOI: 10.30791/1028-978X-2018-11-39-49
Effects of synthesis method and stabilizing
agent trehalose on functional properties
of protein – colloid silica composites
E. S. Dolinina, E. V. Parfenyuk
Protein-silica composites are perspective platform for development of novel formulations of protein drugs. When synthesizing materials with designed properties, the question often arises: how should materials be synthesized in order to achieve the desired result? The most common methods for preparation of silica-protein composites are adsorption and sol-gel technology. In this work, the sol-gel method was used to prepare the composites of bovine serum albumin with colloidal silica in the presence and absence of trehalose as a stabilizer of the protein structure, the structural state of the protein in composites and after release from them, the kinetics and mechanisms of the in vitro release process were studied. The functional properties of the sol-gel composites with analogous composites obtained by adsorption were compared. A strong effect of the synthesis method and a different effect of trehalose on the protein structure in the composites prepared indicated methods and the kinetic parameters and mechanisms of its release was shown. Based on the comparative analysis, it was concluded that sol-gel composites have a number of advantages over adsorption-derived composites in terms of their functioning as protein drug delivery systems.
Keywords: protein, colloid silica, composites, sol-gel, adsorption, trehalose, release kinetics, protein native structure.
DOI: 10.30791/1028-978X-2018-10-50-59
Dolinina Ekaterina — G.A.Krestov Institute of Solution Chemistry of Russian Academy of Sciences (1 Akademicheskaya str., Ivanovo, 153045, Russua), PhD (Chem), research fellow, specialist in the field of synthesis and study of biomaterials. E-mail: terrakott37@mail.ru.
Parfenyuk Elena — G.A.Krestov Institute of Solution Chemistry of Russian Academy of Sciences (1 Akademicheskaya str., Ivanovo, 153045, Russia), PhD (Chem), senior researcher, specialist in the field of synthesis and study of biomaterials. E-mail: terrakott37@mail.ru.
Reference citing
Dolinina E. S., Parfenyuk E. V. Vliyanie sposoba sinteza i stabiliziruyushchego agenta tregalozy na funkcional'nye svojstva kompozitov belka s kolloidnym dioksidom kremniya [Effects of synthesis method and stabilizing agent trehalose on functional properties of protein – colloid silica composites]. Perspektivnye Materialy — Advanced Materials (in Russ), 2018, no. 11, pp. 50 – 59. DOI: 10.30791/1028-978X-2018-10-50-59
Metal-containing nanocomposites on the basis
of isotactic polypropylene
N. I. Kurbanova, N. A. Alimirzoyeva, A. M. Kuliyev,
Z. N. Guseinova, N. Ya. Ishenko
The influence of additions of nanofillers containing nanoparticles of copper oxide stabilized by polymer matrix of polyethylene of high pressure, prepared by mechano-chemical method, on peculiarities of the structure and properties of mixed thermoplastic elastomers on the basis of isotactic polypropylene (PP) and ethylene propylene elastomer of double (SKEP) and triple (SKEPT) by the methods of X-ray phase (RPhA), scanning electron microscope (SEM) and thermographical (TGA) analyses has been investigated. It has been shown that an introduction of metal-containing NF in PP/SKEPT leads to the formation of fine-spherulitic structure of the filled composition and thereby to improvement of fluidity and thermal-oxidative stability and in a case of PP/SKEP the physical-mechanical properties are improved, the composition does not flow. Mixture of TPE on the basis of PP/SKEP/NF can be processed only by a method of pressing and on the basis of PP/ SKEPT/NF both by a method of pressing and by the methods of casting under pressure and extrusion, which expands a sphere of its application.
Key words: thermoplastic elastomers, isotactic polypropylene, ethylene propylene elastomers, metal-containing nanofillers, physical-mechanical properties, RPhA, SEM and TGA analyses.
DOI: 10.30791/1028-978X-2018-11-60-67
Kurbanova Nushaba Ismail gizi — Institute of Polymer Materials of Azerbaijan National Academy of Sciences (Sumgait, Azerbaijan, Az5004, S.Vurgun Str, 124), Dr Sci (Chem), head of laboratory, specialist in the field of development of composition materials and also nanocomposites on the basis of elastomers and thermoplasts and their binary mixtures. E-mail: ipoma@science.az; kurbanova.nushaba@mail.ru.
Alimirzoyeva Naida Amamnulla gizi — Institute of Polymer Materials of Azerbaijan National Academy of Sciences (Sumgait, Azerbaijan, Az5004, S.Vurgun Str, 124), junior researcher, specialist in the field of development of composition materials. E-mail: ipoma@science.az.
Kuliyev Azer Mamed oglu — Institute of Polymer Materials of Azerbaijan National Academy of Sciences (Sumgait, Azerbaijan, Az5004, S.Vurgun Str, 124), PhD (Eng), senior researcher, specialist in the field of development of composition materials on the basis of elastomers and thermoplasts. E-mail: ipoma@science.az.
Guseynova Sulfira Neymat gizi — Institute of Polymer Materials of Azerbaijan National Academy of Sciences (Sumgait, Azerbaijan, Az5004, S.Vurgun Str, 124), PhD (Chem), leading researcher, specialist in the field of development of composition materials. E-mail: ipoma@science.az.
Ishenko Nelli — Institute of Polymer Materials of Azerbaijan National Academy of Sciences (Sumgait, Azerbaijan, Az5004, S.Vurgun Str, 124), PhD (Chem), head of laboratory, specialist in the field of development of composition materials. E-mail: ipoma@science.az.
Reference citing
Kurbanova N. I., Alimirzoyeva N. A., Kuliyev A. M., Guseinova Z. N., Ishenko N. Ya. Metallsoderzhashchie nanokompozity na osnove izotakticheskogo polipropilena [Metal-containing nanocomposites on the basis of isotactic polypropylene]. Perspektivnye Materialy — Advanced Materials (in Russ), 2018, no. 11, pp. 60 – 67. DOI: 10.30791/1028-978X-2018-11-60-67
Modification of the surface of carbon support
for the improvement of performance of hydrogen electrocatalyst based on molybdenum sulfide
V. N. Nevolin, D. V. Fominski, R. I. Romanov,
A. A. Soloviev, M. I. Esin,
V. Yu. Fominski, I. O. Kuznetsov
The modified electrocatalyst of the hydrogen evolution reaction was formed by successive deposition of thin diamond-like carbon and MoSx films onto the carbon support (graphite). For the film preparation, a pulsed laser deposition method was used by ablating two targets — composite (diamond with addition of boron) and MoS2. The B-doping of diamond-like carbon films caused effective formation of sp3-bonds between carbon atoms and simultaneously ensured high electrical conductivity and mechanical strength of a-C(B) films. The electrical conductivity of a-C(B) film (1.4 mΩ·cm) was only slightly inferior to that of graphite, and the hardness reached 28 GPa. Modification of the graphite-MoSx interface with a 100 nm-thick a-C (B) film made it possible to increase the catalytic activity of MoSx and significantly improve the temporal stability of the catalyst. A mathematical analysis of the effect of the support modification on the catalytic activity of the MoSx film was carried out using the density functional theory.
Keywords: catalyst, hydrogen evolution, molybdenum sulfide, diamond-like carbon, boron.
DOI: 10.30791/1028-978X-2018-11-68-78
Nevolin Vladimir — National Research Nuclear University MEPhI (Moscow Engineering Physics Institute, Kashirskoe sh., 31, Moscow 115409, Russia), Dr Sci (Phys-Math), professor of the department of solid state physics and nanosystems, specialist in the physics of thin films and nanostructures. E-mail: nevolin@sci.lebedev.ru.
Fominski Dmitriy — National Research Nuclear University MEPhI (Moscow Engineering Physics Institute, Kashirskoe sh., 31, Moscow 115409, Russia), engineer of the department of solid state physics and nanosystems, specialist in the field of pulsed laser deposition of thin films and nanostructures. E-mail: dmitryfominski@gmail.com.
Romanov Roman — National Research Nuclear University MEPhI (Moscow Engineering Physics Institute, Kashirskoe sh., 31, Moscow 115409, Russia), PhD, researcher of the department of solid state physics and nanosystems, specialist in the field of physical and chemical methods for preparation and study of thin-film structures for various applications. E-mail: limpo2003@mail.ru.
Soloviev Aleksey — National Research Nuclear University MEPhI (Moscow Engineering Physics Institute, Kashirskoe sh., 31, Moscow 115409, Russia), PhD student, specialist in the field of pulsed laser deposition of boron-carbon thin film materials and nanocatalysts based on transition metal chalcogenides. E-mail: ale7@imbox.lv.
Esin Mikhail — National Research Nuclear University MEPhI (Moscow Engineering Physics Institute, Kashirskoe sh., 31, Moscow 115409, Russia), student, specialist in the field of analysis of thin film catalysis with the use of density functional theory. E-mail: navvodchik@gmail.com.
Fominski Vyacheslav — National Research Nuclear University MEPhI (Moscow Engineering Physics Institute, Kashirskoe sh., 31, Moscow 115409, Russia), Dr Sci (Phys-Math), professor, chief researcher of the department of solid state physics and nanosystems, specialist in the physics of thin films, nanostructures and beam surface modification technologies. E-mail: vyfominskij@mephi.ru.
Kuznetsov Il’ya — National Research Nuclear University MEPhI (Moscow Engineering Physics Institute, Kashirskoe sh., 31, Moscow 115409, Russia), engineer of the department of solid state physics and nanosystems, specialist in the field of theoretical methods of solid state physics using quantum Monte Carlo methods and density functional theory. E-mail: ili-isk@mail.ru.
Reference citing
Nevolin V. N., Fominski D. V., Romanov R. I., Soloviev A. A., Esin M. I.,
Fominski V. Yu., Kuznetsov I. O. Modificirovanie poverhnosti uglerodnogo nositelya dlya uluchsheniya harakteristik ehlektrokatalizatora vodoroda na osnove sul'fida molibdena [Modification of the surface of carbon support for the improvement of performance of hydrogen electrocatalyst based on molybdenum sulfide]. Perspektivnye Materialy — Advanced Materials (in Russ), 2018, no. 11, pp. 68 – 78. DOI: 10.30791/1028-978X-2018-11-68-78
