Materials Literature
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Green Monoliths (GMs) of self-adhesive carbon grain from fibers of oil palm empty fruit bunches were prepared by compression pressure at 1.43 × 107, 1.91 × 107 and 2.39 × 107 kg/m2, respectively. Activated carbon monoliths ACM-A, ACM-B and ACM-C prepared by CO2 activation from these GMs, respectively, were used as ele…
We present a mode-coupling theory for the dynamics of a tagged particle in a driven granular fluid close to the glass transition. The mean-squared displacement is shown to exhibit a plateau indicating structural arrest. In contrast to elastic hard-sphere fluids, which are solely controlled by volume fraction, the loca…
In this study, Porous NiTi shape memory alloy has been produced by mechanical alloying of the elemental Ni and Ti powders. The compacting process was done at two temperatures (warm and cold press) and then sintering at 980 and 1050°C was performed on the specimens. Microstructure and mechanical prop-erties of the samp…
A Small Angle X-ray Scattering (SAXS) beamline has been constructed at the Siam Photon Laboratory (SPL) of the Synchrotron Light Research Institute (SLRI). The SAXS beamline is dedicated for nano structural characterization of materials. The synchrotron light originated from a bending magnet is monochromatized using a…
The causes and laws of the appearance of residual stresses in ceramic materials during technological operations (sintering, annealing, neutron irradiation deformation processing, chemical interaction with a medium) are analyzed using our results and the data obtained by other researchers. The effect of residual stress…
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The effect of preparation methods on the electrical properties of epoxy resin/carbon nanofiber (ER/CNF) composites has been investigated. The conductivity, permittivity, and loss tangent of composite materials has been measured in the frequency range of 0.09 Hz-1 MHz in the region below and above the percolation thres…
We studied structures that describe the perfect-absorber effect by using different mechanisms. Firstly, we investigated the dependences of the reflectance and the absorbance of a metamaterial, as structure proposed by Landy et al. [Phys. Rev. Lett. 100 , 207402 (2008)] on gap ‘g’ of the structure at GHz frequencies. T…
In this study, 5-aminotetrazole (ATRA) was characterized as a corrosion inhibitor in a phosphate electrolyte for Cu electrochemical mechanical planarization (ECMP). The D.C. and A.C. electrochemical results revealed that ATRA can inhibit Cu surface against dissolution more effectively compared to benzotriazole (BTA).…
The effect of replacing lanthanum with praseodymium on the crystal chemistry parameters of solid solutions of La1 − x Pr x BaCuFeO5 + δ has been investigated using X-ray powder diffraction analysis and IR spectroscopy. The thermal expansion, electroconductivity, and thermopower of these phases have been studied in air…
A novel polyimides of polystyrene with high thermal stability were prepared by the reaction of aminated polystyrene with Benzophenone tetracarboxylic dianhydride. The aminated polystyrene were prepared from the nitration of polystyrene followed by chemical reduction of its nitro groups. Infrared (FT-IR) spectra and th…
Laboratory of Thin Film Technologies, School of Natural Science, Far Eastern Federal University, Vladivostok, RussiaIn this paper we report on the fabrication of amorphous CoP alloy nanowires by means of alter-nating current (ac) electrodeposition in an highly ordered anodic aluminum oxide (AAO) template.An ac voltage…
Using alumina-rich MgAl2O4 spinel AR78 and 97 fused magnesite as raw materials, brine as the binder, magnesia alumina spinel bricks close to theoretical composition have been prepared. The phase composition and microstructure of the specimens were analyzed and characterized. The alkali resistance property of specimens…
In this paper, electronic structures and third-order nonlinear optical (NLO) properties of a series of Pt–Pt bond-containing metal complexes have been calculated by using the density functional theory (DFT) combining with the sum-over-states (SOS) method. In order to check the reliability of this method, the electron…
The dynamics of potassium (K) in soil was investigated in long-term small-plot field trials at seven stations, where five combinations of fertilization were tested. The objective of the experiment was to estimate the effect of the weather conditions, type of growing region and increasing doses of fertilizers on the co…
Oxide dispersion strengthened ferritic steels (so-called nanostructured ferritic alloys, NFAs), which are candidate structural materials in next generation nuclear power plant, have attracted much attention during recent years. In this work, iron oxide as oxygen carrier and titanium, yttrium hydrides were together mec…
BaTiO(subscript 3-δ) (BTO) and BaTi0.88Fe0.12O(subscript 3-δ) (BTFO) polycrystalline samples were investigated to understand the role that Fe dopant and oxygen vacancy play on their various properties. Their structures were examined using X-ray diffraction and X-ray absorption spectroscopy. Their optical and conductio…
Kurzfassung Hochfeste Stähle mit einer kubisch raumzentrierten Gitterstruktur können bereits bei sehr geringen Wasserstoffgehalten zur verzögerten Rissbildung neigen. Zum sicheren Einsatz dieser Stähle ist deshalb die Kenntnis des enthaltenen diffusiblen Wasserstoffes notwendig, der sich schadensursächlich auswirken k…
Relaxors exhibit unique dielectric response properties such as diffuse phase transitions and strong dispersion of the dielectric constant. The origin of these properties is still not fully understood. Here, we review our work on using first-principles-based methods to elucidate the connections between composition, loc…
Nanoomposites consisting of natural rubber (NR) reinforced with the modified kaolin were fabricated. The effect of modified kaolin loading on the mechanical properties of the vulcanizates was examined by varying its incorporation (20–50 phr). The NR-based nanocomposites were characterized using the transmission electr…