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Article
Temperature Influence on the Properties of Freely Poured Nano-Sized Inorganic Oxide Powders
A comparative investigation was performed on the possibility of controlling the average sizes of nano-sized powders of silicon dioxide and aluminum oxide, obtained by electron-beam evaporation and by pyrogenic...
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Article
Synthesis of yttrium oxide Y2O3 nanopowder through evaporation using a high-energy electron beam
The paper presents the experiments on irradiation of the yttrium oxide powder target with a relativistic electron beam and evaporative production of yttrium oxide nanopowder. The phase and chemical consistence...
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Article
Adhesion of Ethylene-Vinyl Acetate Copolymer Filled with Tarkosil Silica Nanoparticles
This article is devoted to adhesion forces of polymers modified with silica nanoparticles, as well as studying changes in the surface relief of polymers modified with nanopowders of silicon dioxide, using the ...
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Article
INFLUENCE OF SILICA NANOPARTICLES ON THE PROPERTIES OF PAINT-AND-VARNISH COATING MADE OF PERCHLORVINYL ENAMEL
Effect of nanosized silicon on mechanical properties, texture, and structure of a polymer paint-and-varnish coating made of gray KhV-16 enamel based on perchlorovinyl and glyphthalic resins is studied. It is e...
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Article
Influence of Agglomeration on the Viscosity of Nanofluids
A model of the associated layer on the surface of nanoparticles in a fluid, which makes up mechanically integrated inclusions with them, has been proposed. Such inclusions can primarily be considered as solid ...
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Article
Simulation of the structural state of amorphous phases in nanoscale SiO2 synthesized via different methods
The structural state in nanoscaled SiO2 is probed experimentally via X-ray diffraction and the simulation method. The aerosil nanoparticles and nanoparticles synthesized via the electron beam evaporation are comp...
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Article
Modeling of the Structural State of Amorphous Phases of the Nano-Sized Al2O3 Produced by Different Synthesis Methods
The paper examines the structural state of the Al2O3 alloy nanopowders synthesized by different methods: electron beam evaporation, hydrolysis, and plasma-chemical method. X-ray structural analysis demonstrated t...
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Article
Determination of thermal conductivity of silica dioxide Tarkosil T-50 nanopowder by laser flash technique
Results of measuring the thermal conductivity coefficient of silica dioxide Tarkosil T-50 nanopowder by a laser flash technique are reported. Experimental data on thermal conductivity of nanopowder in vacuum, ...
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Article
The general mechanisms of Cu cluster formation in the processes of condensation from the gas phase
Technological applications of metallic clusters impose very strict requirements for particle size, shape, structure and defect density. Such geometrical characteristics of nanoparticles are mainly determined b...
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Article
Polymer-liquid crystal composites doped by inorganic oxide nanopowders
This paper investigates the impact of nanoscale additives on electro-optical properties of films of polymer-liquid crystal composites (PLCC). It has been shown that the nanoparticles do** in the polymer matr...
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Article
The associated layer and viscosity of nanoliquids
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Article
Wake flow-induced acoustic resonance around a long flat plate in a duct
Flows around long thin blunt flat plates generate acoustic resonances when the sound frequency generated by the vortex shedding becomes close to the frequency of the acoustic mode around the plate. After their...
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Article
Synthesis of copper nanopowders using electron-beam evaporation at atmospheric pressure of inert gas
This work is devoted to the description and analysis of the technique used to obtain copper nanopowder by substance evaporation with the help of a powerful electron beam. The method possesses the following fea...
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Article
Measurement of the viscosity coefficient of an ethylene glycol-based nanofluid with silicon-dioxide particles
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Article
Evaluating partial pressure of vapors for various oxides
To improve control of the process of nano-powder production in the industrial plant based on electron accelerator, partial pressure of vapors was evaluated at evaporation for different reactions of aluminum, s...
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Article
Stability of a nanopowder boundary-layer flow on a concave plate
Using hot-wire probe measurements, the mean and fluctuating velocities in a boundary layer on a concave plate immersed in the flow of a nanosized silicon dioxide powder are studied. A region of destabilization...
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Article
Use of hot-wire anemometry for measuring the nanopowder flow velocity
A new technique for measuring the flow velocity of nano-scale powders is used. The hot-wire anemometry method widely used in gas flows is employed for investigating nanopowder flows. By way of illustration, th...
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Article
Synthesis and structure of Ag-Si nanoparticles obtained by the electron-beam evaporation/condensation method
Metal-semiconductor composite Ag-Si nanostructures, including Ag/Si core-shell nanoparticles, have been synthesized for the first time by a high-efficiency evaporation/condensation method using relativistic el...
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Article
Gas filtration and separation with nano-size ceramics
Filtration and separation properties were studied for filters made from open-porosity ceramics (sintered from authors-developed silicon dioxide nanopowder “tarkosil”. Key parameters were measured for samples o...
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Article
Preparation of nickel nanopowder through evaporation of the initial coarsely dispersed materials on an electron accelerator
The experimental studies have shown that, during evaporation of coarsely dispersed carbonyl nickel, a nanodispersed powder of high purity can be obtained, which is promising for use in different technological ...
