Materials Literature
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The polycrystalline samples of Bi1−xPr x FeO3 (x = 0 and 0.1) were prepared by a solid-state reaction technique. Preliminary X-ray structural analysis has confirmed the formation of a single-phase compound. Studies of dielectric and impedance spectroscopy of the materials, carried out in wide frequency (1 kHz-1 MHz) a…
Magnesium alloys, the lightest structural metal, are used in the field of aeronautics and astronautics more and more, however they are still limited for the poor corrosion resistant and high temperature property. In order to satisfy the need of long time store and short time operation at elevated temperature, coating…
Abstract The present study investigated the effect of the surface functional groups of nanosilica on the interfacial, crystallization, and thermal stability of polyamide 6/SiO 2 (PA6/SiO 2 ) nanocomposite, in which nanosilica was modified in situ with both 3-triethoxysilylpropylamine and 3-methacryloxypropyltrimethoxy…
Promising models and criteria of two-parameter fracture mechanics that take into account features of the stress-strain state in the vicinity of a cracklike defect are presented. Theoretical and experimental methods for assessing a crack path and the structural durability and vitality of damaged critical elements accou…
The effect of the initial structure of the alloy-fillers on the structure formation of the dissolution-diffusion type interfaces in macroheterogeneous composite materials with a metal binder has been investigated. It has been shown that by combining phases, which differ in resistance to molten binder in infiltration,…
Fiber-reinforced polymer composites have played a dominant role for a longtime in a variety of applications for their high specific strength and modulus. The fiber which serves as a reinforcement in reinforced plastics may be synthetic or natural. Past studies show that only synthetic fibers such as glass, carbon etc.…
Photochromic diarylethenes with an additional p system in the ethene bridge were synthesized by the condensation of 2,3-bis(2,5-di- methyl-3-thienyl)cyclopent-2-en-1-one with aromatic aldehydes. Absorption bands maxima of the initial and cyclic forms of the substances were determined and their thermal stability was st…
The present work is concerned to study the optical constants of the PVA/BaSO<sub>4</sub> composites at different concentrations of barium sulphate. The samples are prepared by casting method technique with different proportion of PVA and BaSO<sub>4</sub>. The absorption and transmission spectra have been recorded at t…
There were no significant deviations from the norm in the functional state of the liver, kidneys, and pancreas in the study of the acute toxicity of iron-molybdenum buckyballs intended for targeted drug delivery. No accumulation of nanoparticles or deviation from the norm in any investigated parameter was detected in…
Abstract Porous superhydrophobic layer of low-density polyethylene (LDPE) was created by a simple approach on the Poly(vinylidenefluoride) (PVDF) hollow fiber membranes. Acetone and ethanol mixtures with different volume ratios were used as the non-solvent on the coating surface. A 5:1 (v/v) acetone/ethanol ratio prov…
The strain rate-temperature conditions of manifestation of the effect of high-temperature superplasticity by samples of an 1933 alloy have been established. Features of the structural state, phase composition, and deformation relief of samples of this alloy have been investigated. It has been established that grain-bo…
Transport properties (conductivity, transport numbers of oxygen ions, oxygen permeability) are studied for new composites of ZrV2O7-25, 30, 35, 40 mol % of V2O5 with a liquid-channel grain boundary structure (LGBS) at 680–740°C. It is shown that the composite of ZrV2O7-40 mol % of V2O5 with LGBS has high selective oxy…
The corrosion inhibition characteristics of the synthesized (I, II and III) nonionic surfactants on carbon steel corrosion in 1 M acid chloride have been investigated at 30 oC by potensiodynamic polarization. The obtained results show that compound I has the best efficiency at concentration 0.08 mmol/L while compound…
Magnetic composite sorbents based on microporous and biporous hypercrosslinked polystyrenes (HCPs) with inclusions of iron oxide nanoparticles were studied by X-ray diffraction and differential thermal analysis. In microporous composites, the size of impregnated magnetite nanoparticles was less than ∼6 nm, the nanocom…
The dependence of the complex permittivity of epoxy composite in the microwave region on the concentration of added amine-functionalized graphene fillers is studied. It is shown that the obtained composites have high values of the dielectric loss tangent at comparatively small values of ɛ′.
Views Icon Views Article contents Figures & tables Video Audio Supplementary Data Peer Review Share Icon Share Twitter Facebook Reddit LinkedIn Tools Icon Tools Reprints and Permissions Cite Icon Cite Search Site Citation Ilknur Küçük, Halil Gevgilili, Dilhan M. Kalyon; Effects of dispersion and deformation histories…
The Gibbs free energy and critical reaction conditions of preparing Mg and Ca metal by carbothermic reducing calcined dolomite were calculated and analyzed. New thermodynamic criterion for reduction reaction, including the critical temperature and vacuum degree, was studied. The results show that: when T/P0.0449 < 119…
Characteristic equations in magnetized plasma with chirality are derived in simple formulations and the dispersion relations for propagation parallel and perpendicular to the external magnetic field are studied in detail. With the help of the dispersion relations of each eigenwave, the author explores chirality-induce…
This paper focuses on finding optimal electrochemical conditions from linear sweep voltammetry analysis for preparing highly reproducible tip-enhanced Raman scattering (TERS) conical gold tips with dc-pulsed voltage etching. Special attention is given to the reproducibility of tip apex shapes with different etchant mi…
Abstract The research described in this article is a fragment in the series of published works trying to determine the applicability of new materials for parts of the mining machinery. Tests were carried out on the - very popular in mining applications - 36HMN steel and three types of the austempered ductile iron, usi…