Materials Literature
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Due to the chemically unstable nature of uranium dioxide its vapor composition at very high temperatures is, presently, not sufficiently studied though more experimental knowledge is needed for risk assessment of nuclear reactors. We used laser vaporization coupled to mass spectrometry of the produced vapor to study u…
In this work, an extensive experimental data of Nansulate coating from NanoTechInc were applied to develop an artificial neural network (ANN) model. The Levenberg–Marquart algorithm has been used in network training to predict and calculate the energy gain and energy saving of Nansulate coating. By comparing the obtai…
In this work, we have investigated the influence of rapid thermal annealing (RTA) on structural and optical properties of ZnO nanorods synthesized by a mechanochemical reaction route using a planetary ball mill for different reaction time durations. Optical properties of as-grown and RTA-annealed samples are studied b…
X-ray diffraction analysis and high-resolution electron microscopy of BiFeO3 films prepared by dc magnetron sputtering on single-crystal LaAlO3 (001) substrates reveal that the films have a highly c-oriented orthorhombic crystalline structure. The magnetic properties of the BiFeO3 films are typical of ensembles of int…
The results on the study of grain boundary effects and influence of film deposition conditions on the magnetoresistance and its anisotropy in polycrystalline La0.83Sr0.17MnO3 films are presented. The magnetoresistance was measured in high pulsed magnetic fields up to 25 T (pulse duration 0.6 ms) in the temperature ran…
We report on the mechanism of the dielectric properties of oxygen vacancy in ZnO, using ab initio numerical simulations of oxygen vacancy on the band structure and dielectric properties, to develop photoelectric material applications. It is revealed that the appearance of oxygen vacancies leads to wider energy band ga…
A method of preparing MF-4SK membranes with the anisotropic distribution of aniline over the thickness is developed. The processes of aniline polymerization in the matrix of the MF-4SC sulfocationite membrane are investigated via electronic-absorption and IR spectroscopy. The processes of ion transport in the obtained…
This work reports the synthesis of three polymers and two new copolymers based on 3-substituted polythiophene derivatives, all of them demonstrated photoluminescent properties. All polymers synthesized, i.e., poly(3-methoxythiophene) (PMOT), poly(3-thiopheneethanol) (PTE), poly(3-thiophenemethanol) (PTM), poly(3-metho…
This study investigates the effects of fiber loading and coupling agent on the performance of EFB fiber composites of oil palm biomass. The dried EFBs were ground in random sizes for composite production. Fiber composition and fiber morphology were evaluated by SEM and EDAX. Ground fiber was compounded with PP by mean…
Two types of dispersions, namely, resonancelike and relaxationlike dispersions, and their significantly different high-frequency magnetic properties and attenuation characteristics have been studied for barium ferrite composites BaCoxZn2−xFe16O27 with x=0.5–1.3. The composites with x=0.5, 0.6, and 0.65 have c-axis ani…
Copper Iodide based dye-sensitized solar cells (DSSC) has been reported either deliver small photocurrents or highly unstable. In this research, by added in a small amount of Tetra-methyl-ethylene-diamine (TMED) into CuI sol-gel (CuI in acetonitrile), performance of electrical properties and optical properties of CuI…
The microstructure of mechanocomposites produced by mechanical alloying of Ti and Al powder mixtures in high-energy planetary ball mill has been studied by the methods of transmission electron microscopy and X-ray diffraction analysis. The formation of highly defect structural states with high magnitudes of the crysta…
A method is proposed for calculating the entropy of plastic deformation from IR scanning data and for determining the refined thermodynamic parameter (Gibbs free energy) of the system under quasistatic straining. The method is based on the assumption that the specific heat of the material does not depend on the stored…
For in-situ bonding of pultruded rod into timber structural members, such as in the construction of bonded-in timber connection, strengthening and repair of timber structures, the adhesive used must be thixotropic, room temperature cure, environmentally stable and friendly and applied at without pressure. This study i…
First-principles calculations were carried out to investigate the structural stability of synthesized orthorhombic Ta 2 N 3 . It is found that the stoichiometric orthorhombic Ta 2 N 3 is unstable below 20 GPa. However, it can be stabilized by a small amount of nitrogen vacancies or oxygen substitution into nitrogen si…
The new mineral fluorphosphohedyphane, Ca 2 Pb 3 (PO 4 ) 3 F, the F-analog of phosphohedyphane, is hexagonal with space group P6 3 /m and cell parameters a = 9.6402(12), c = 7.0121(8) Å, V = 564.4(1) Å 3 , and Z = 2. It occurs in the oxidation zone of a small Pb-Cu-Zn-Ag deposit, the Blue Bell claims, about 11 km west…
The possibility of testing the hardness of quenched and tempered medium-carbon steels using their magnetic properties is studied. It is shown that the two-parameter method should be applied for the reliable estimation of the hardness. The coercive return magnetization (induction) and the coercive force must be used as…
Micro‐Raman spectroscopy has been employed as an effective technique to determine the phase transformations in nanostructured yttria stabilised zirconia (YSZ) ceramics with different yttria contents. Samples have been prepared with varying mean grain sizes by a slip casting route followed by a microwave assisted two‐s…
ZnO/Ag/Glass films were prepared by a DC magnetron sputtering system, which exhibit both excellent properties of high conductivity and high transparency. Moreover, an enhancement of transmission of ZnO films was observed after brought into contact to a silver layer, but the understanding of experimental findings for t…
The thermal conductivity of β- and α-BaB 2 O 4 single crystals has been measured at temperatures from 50 to 300 K by a steady-state axial flow technique. The 300-K thermal conductivity of the β-polymorph along and across its c axis is 1.64 ± 0.08 and 1.24 ± 0.06 W/(m K), respectively, and that of the α-polymorph along…