Materials Literature
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The paper considers the application of multiscale inelastic deformation models of crystal plasticity theories to the description of experimental effects observed in single- and polycrystals under complex loading. In particular, as an example, a two-scale inelastic deformation model of polycrystalline metals is applied…
X-ray phase analysis, thermogravimetry, and volumometry were used to study the mechanochemical synthesis of zinc oxide. The conversion of metallic zinc was calculated in relation to the time and method of mechanical activation and to the oxidizing medium used. The most optimal conditions of oxidation of metallic zinc…
This paper presents a highly sensitive dedicated sensor that selectively measures nitrate ions. Nitrate-selective electrode of the three-electrode electrochemical sensor is formed by modifying the working electrode of the sensor with a novel nanofibrous mat made of conductive polypyrrole nanofibers. The nanofibers are…
Components based on carbon‐bonded alumina refractories are widely used in steelmaking industry in terms of submerged entry nozzles, monoblock stoppers, and ladle shrouds. According to the current state of the art, such components are glazed to inhibit oxidation of carbon‐containing refractories. Carbon oxidation leads…
Non-polar coexisting m -plane ( ) and a -plane ( ) zinc oxide (ZnO) thin films have been synthesized onto commercial silicon (100) substrates by using plasma enhanced chemical vapor deposition (PECVD) system at different working pressures. The effects of the working pressure on crystal orientation, microstructure, sur…
Abstract The copper‐catalyzed alkyne azide cycloaddition (CuAAC) reaction was combined with sol‐gel reactions for the production of bridged silsesquioxanes (BSs) in which hexyl and icosanyl chains are pendant and anchored on a single position to a triazole ring. The influence of the alkyl chain length on the structure…
Objective : The main aim of the current study is to show Anti-infective coating on biomedical implants, one of the novel approaches to control the biofilm formation. Methods : In this study, the coating was employed by the slurry of Polyvinyl alcohol (PVA),Polyethylene glycol (PEG) and Chitosan with encapsulated Genta…
Three Terpolymers TERP-1, TERP-2 and TERP-3 were synthesized using melamine, formaldehyde and substituted aniline and their inhibitive action on corrosion of mid steel in 1M HCl was studied using electrochemical impedance spectroscopy (EIS), potentiodynamic polarization, linear polarization and gravimetric and weight…
Nanodielectrics have been investigated recently as they have shown some improved dielectric properties that are important for high voltage insulation applications. One of these improvements is the reduction in space charge when the nanocomposites are subjected to high dc electric fields. It has been widely reported th…
The electronic switching converters used to supply squirrel cage motors can cause, during the normal operation, some critical problems leading to the early failure of the stator winding insulation. In fact if the electrical motors are supplied by switching electronic converters, the stator insulating system is subject…
Although synthesis and substitution reactions of chlorido chromium(III) porphyrins Cr(III)(TPP)(Cl)(L) (H2TPP = 5,10,15,20-tetraphenyl porphyrin, L = pyridine, H2O, ROH, etc.), have been well-established in coordination chemistry for decades, an unexpected dichotomous reactivity of Cr(III)(TPP)(Cl)(H2O) (1) toward ami…
Photothermal conversion nanomaterials attract much attention for their high light/heat transform efficiency and controllable light absorption. In this work, the CuS semiconductor nanomaterials were prepared through the deposition method in the presence of citrate sodium and were characterized by TEM, XRD and UV-vis sp…
The present work reports the effects of g irradiation on vermiculite for the first time. The radiation-induced changes of vermiculite were studied using different techniques viz. ultravioletvisible spectroscopy (UV-Vis), dielectric measurements, X‑ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR),…
The aggregation state of nanoparticles (NPs) must be precisely known in order to study the structure-property relationship and to evaluate the exploitability of NPs dispersion for a given application. Here we report a general technique for sample preparation to investigate with transmission electron microscopy (TEM) t…
Zinc oxide nanopillar was synthesized by simple and cost-effective wet chemical method and characterized by several techniques. The XRD confirmed hexagonal wurtzite phase and the crystal quality of the nanostructure. The band gap was calculated using Tauc’s plot from reflectance spectra. The morphology of ZnO nanostru…
In this study, we examined the accumulation mechanism of the space charge in a covering insulating material of motor windings under high voltage based on measurement results of space charge distributions. In these days, the inverter-fed motor drive using pulse width modulation control is applied to many electric devic…
We discuss the interfacial migration due to Marangoni forces of clay particles within an oil droplet that is immersed in water, which is relevant for the formation kinetics of Pickering emulsions. Hydrophilic (MMT) and hydrophobic (OMT) clays are studied, where the hydrophilic clay particles adsorb in the oil–water in…
Based on the variational principle, a continuum theory of surface elasticity and new boundary conditions for quasicrystals is proposed. The effect of the residual surface stress on a decagonal quasicrystal that is weakened by a nanoscale elliptical hole is considered. The explicit expressions for the hoop stress along…
Magnetic materials made of iron-powder that are used for the cores of the chokes of voltage source inverters output filters significantly change their power losses and magnetic properties with the frequency and the amplitude of the choke current in the range that is important for designers. This causes the magnitude B…
The evolution of the structural parameters of deformation fragments and dynamically recrystallized grains in FeNi alloy are analyzed by means of transmission electron microscopy and back-scattered electron diffraction in a Bridgman camera upon severe plastic deformation with an increase in the number of full turns at…