Mechanochemical synthesis of additives for cathode material of lithium-ion traction batteries
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Dynamics of a spherical bubble rising in gravity, subject to traveling pressure disturbance
Abstract The motion of a spherical bubble rising in a gravitational field in presence of a traveling pressure step wave is investigated. Equations of motion for the bubble radius and center of mass are deduced and several sample cases are analysed by means of their numerical integration. The crucial role played by the…
THIN FILM FeGa-FeCoGa/Metglas/LGT STRUCTURES FOR MAGNETOELECTRIC MAGNETIC FIELD SENSORS
The paper studies the influence of the composition of a graded magnetostrictive layer on the magnetoelectric effect in three-layered laminated structures of the type composite magnetostrictive ferromagnet / ferroelectric / composite magnetostrictive ferromagnet. A single crystal of La 3 Ga 5.5 Ta 0.5 O 14 (lanthanum g…
Investigation of the effects of silicone oil coating and hot air drying on the optical and physical properties of heat-set web offset printing papers
Heat-set web offset printing is a printing system that ink dries quickly with hot air. It is one of the preferred printing techniques with high speed printing process and print quality. Web offset printing machines produce approximately 60,000-70,000 iph (impressions per hour). Because of this speed, printing paper sh…
THE CHEMICAL COMPOSITION AND DATING OF ACCESSORY ZIRCON FROM GRANITIC PEGMATITES IN THE NORTH-EASTERN PART OF THE ADUISKY MASSIF
В журнале находят отражение актуальные вопросы изучения, оценки и промышленного освоения минерально-сырьевых ресурсов Уральского региона и сопредельных территорий. В их числе проблемы геологии и разведки недр, геофизических исследований, горного дела и горной механики, экономики природопользования. К публикации приним…
DEFINITION OF QUANTITATIVE FACTORS, SIGNIFICANTLY INFLUENCING ON TECHNOLOGICAL CHARACTERISTICS OF MODEL COMPOSITIONS
Изучено влияние количественных составляющих основных компонентов модельных композиций (взаимного растворителя, полимера, упрочняющего компонента и наполнителя) на их технологические свойства (температуру каплепадения и теплоустойчивость). Установлено, что основным параметром, оказывающим значимое влияние на температур…
FEATURES OF STRUCTURE AND PROPERTY OF ALLOYS ON THE BASIS OF Ni3Al INTERMETALLIC COMPOUND, HALF-SCIENTISTS METHOD SLM
Исследованы особенности структуры сплавов на основе Ni3Al типа ВКНА, полученных методом селективного лазерного сплавления в состоянии после синтеза, термической и газостатической обработки. Показаны основные особенности формирования ячеистой структуры в зависимости от содержания в сплавах углерода. Рассмотрено влияние…
The Oscillations in ESR Spectra of Mn0.11Hg0.89Te in X- and Q-Bands
Abstract The object of the investigation was n-type mercury chalcogenide (Mn0.11Hg0.89Te) monocrystal which was grown by crystallization from a two-phase mixture with replenishment of the melt from a tellurium solution. The investigations of microwave absorption derivative (dP/dH) showed the existence of strong high a…
STYDYING THE INFLUENCE OF THE NATURE OF THE FILLER ON THE MECHANICAL PROPERTIES OF THE DER-330 EPOXY RESIN
The purpose of this paper is to investigate the effect of the nature of various fillers on the mechanical properties of the DER-330 epoxy resin.The A-380 and A-200 hydrophilic silica powders, alumina-based powders in the form of spherical particles and nanofibers, and aluminum nitride powder are used as fillers.The ma…
FEATURES OF LOW-TEMPERATURE CRYSTALLIZATION OF Ti2NiCu AMORPHIZED BY THE METHOD OF SPINNING FROM MELT
Ti 50 Ni 25 Cu 25 alloy ribbons of different thicknesses have been obtained by rapid quenching from the melt by spinning; the structural and phase transformations during synthesis and subsequent thermal treatment are studied. The investigations are performed by X-ray diffraction, analytical transmission and scanning e…
Hot Excitons Contribution into the Photoluminescence of Self-Assembled Quantum Dots in CdSe/ZnSe Heterostructures under Different Excitation Conditions
Abstract “We present experimental and theoretical study of the photoluminescence in a set of double asymmetric CdSe/ZnSe quantum wells with self-assembled quantum dots separated by rather thick ZnSe barrier. It is found that for a certain ratio between depths of quantum wells hot exciton channel in the photoluminescen…
Luminescence of HgCdTe– and InAsSb–based quantum–well heterostructures
Photoluminescence of single quantum-well (SQW) HgCdTe-based structures and electroluminescence of multi quantum-well (MQW) InAsSb-based structures were studied. SQW HgCdTe-based heterostructures were grown by molecular beam epitaxy, while MQW-based InAsSb heterostructures were fabricated by metal-organic chemical-vapo…
Electrochemical Energy Storage: Mesoporous Reduced Graphene Oxide as a High Capacity Cathode for Aluminum Batteries (Small 51/2018)
Tailoring the pore size distribution of carbon-based cathodes is a decisive factor for the electrochemical performance of aluminum batteries. In article number 1803584, Pedro M. F. J. Costa and co-workers show how the mesopores in a reduced graphene oxide powder facilitate the movement of large chloroaluminate ions, e…
Dyson–Maleev theory of an X X Z ferrimagnetic spin chain with single-ion anisotropy
We use the mean-field approximation of Dyson–Maleev representation to study an XXZ Heisenberg ferrimagnetic spin chain with single-ion anisotropy. By solving the self-consistent equations with different anisotropies, λ and D respectively, the energy spectrums, internal energy, static susceptibility and specific heat a…
Preparation and Characterization of PDMS-SiO2-CuO Nanocomposite Coating on Stainless Steel and Its Super-hydrophobicity Property
Abstract: With the advances in the development of biomaterials for tissue replacement, the attention of scientists has been focused on the improvement of clinical implant properties. In this regard, despite the appropriate properties of the stainless steel, the application of stainless steel as implants has been limit…
Preparation of flat surfaces on silicon carbide substrate using electron beam processing
Electron beam processing of 6H-SiC{0001} surfaces is studied. Initial substrates contain polishing scratches on (0001) face and rough surface of (000-1) face specially developed by KOH etching which are eliminated by electron beam processing. Processing is carried out in vacuum of 0.1 mTorr, energy about of 69 kJ, and…
Investigation of unbalanced magnetic force in permanent magnet brushless dc machines with diametrically asymmetric winding
The purpose of this paper is the calculation of Unbalanced Magnetic Force (UMF) in permanent magnet brushless DC (PMBLDC) machines with diametrically asymmetric winding and investigation of UMF variations in the presence of phase advance angle. This paper presents an analytical model of UMF in surface mounted PMBLDC m…
Finite element analysis of the wear fatigue resistance of gradient structure layers with different yield strength distributions
Finite element analysis (FEA) was performed to study the wear fatigue resistance of gradient structures (GSs) with different types of yield strength distributions under rolling-sliding contact. We found that the GS layer can reduce the plastic strain and surface deformation of the rail, which transfers a portion of th…
Experimental study of fuel cell properties based on current-voltage characteristic
Demand for stable and easily-accessible energy is constantly growing. It is obvious that renewable energy sources cannot meet all the needs of modern human civilization. Thus, it is extremely important to find an effective and environmentally safe way of extracting energy from natural resources. Fuel cells could make…
Thin-film conversion coatings reduce process times and costs
Henkel AG & Co KGaA (Henkel) now offers a range of new-generation metal pretreatment processes, as briefly outlined here, in the first of this month's technology focus articles.