Materials Literature
按标题、摘要、年份、主题和来源检索公开元数据。结果保留作者、摘要、分类与原始来源链接。
Crystal structures of isomorphous crystal nonahydrates of aluminum, gallium, and scandium perchlorates were determined by the X-ray crystal analysis at room temperature. The estimate of associates present in concentrated solutions was carried out by the method of X-ray diffraction in aqueous solutions of aluminum perc…
Photoinduced enhancement of the solubility of annealed films made of chalcogenide glassy semiconductors (ChGSs) in amine-based selective etchants has been observed. The etching rate increases with the illumination intensity, and its spectral dependence is correlated with absorption in the film at the absorption edge.…
The magnetism driven by cation defects in undoped CeO 2 bulk and thin films is studied by the density functional theory corrected for on-site Coulomb interactions (DFT+ U ) with U = 5 eV for the Ce4f states and U = 7 eV for the O2p states. It is found that the Ce vacancies can induce a magnetic moment of the ∼ 4 μ B /…
Abstract Fracture toughness (K IC ) of high purity cold isostatically pressed alumina ceramic (CIP-Al 2 O 3 ) was determined from the size of cracks induced by Vickers hardness testing at wide range of loads. The observed cracks appeared at following loads: 4.905 N, 9.81 N, 29.43 N and 49.05 N. The studied material ex…
The article discusses the results of mathematical and experimental simulation of the impact of atomic oxygen of the Earth’s upper atmosphere on carbon and boron nitride nanotubes, graphene, hexagonal boron nitride sheets, and graphene nanoribbons, as well as composites based on polymer matrices with fillers in the for…
For zirconium alloys of the type E110 (Zr-Nb) and E635 (Zr-Nb-Sn-Fe), the dynamics of accumulation (variation) of concentrations of alloying elements and impurities, including hydrogen and helium, the behavior of primary radiation damage and radioactivity under irradiation up to 50 years in the neutron spectrum of a V…
The effect of vinyl alcohol-phthalic anhydride as a coupling agent on the tensile properties, morphology, and thermal degradation of low density polyethylene/tyre dust (LDPE/TD) composites was studied. LDPE/TD composites with different tyre dust loading and the addition of vinyl alcohol-phthalic anhydride were prepare…
In this paper the authors present two procedures for the analysis of polymer nanocomposites. The first one uses a two dimensional surface profile to quantify the volume of eroded material and the erosion depth caused by surface discharges. The second one introduces the focused ion beam (FIB) as a new way of microscopi…
Partial discharges may cause damage to electrical insulation of high voltage equipment. They initiate elastic waves in the insulating material, e.g. in the stress cone of an outdoor termination. Localisation of the origin of such elastic waves can help to predict serious damaging processes in the electrical insulation…
We show that contact properties of chemical vapor deposition (CVD)-grown graphene to metal electrode can be improved with Ar plasma treatment before metal electrode deposition. The Ar plasma treatment reduced the baseline signal of the Raman spectrum of graphene without changing main peaks of 2D and G peak and increas…
Pre-mixed NiZn ferrite/MWNT, according to the weight ratio 1:1, were incorporated into the thermoplastic natural rubber nanocomposite by melt blending process. The effect of different filler loadings (2-10 wt%) on reflection loss and shielding effectiveness of the obtained composites were studied. It was found that bo…
In this study, devulcanised ground fluoroelastomer (FKM) ultrafine powder with the sol fraction of 19·8% and the average particle size of ∼1 μm or less was successfully prepared by solid state mechanochemical milling at ambient temperature. This reclaimed FKM can be used as a low cost but effective functional additive…
Operation of an electrode made of electrolytic nickel sulfide in a prototype electrochemical capacitor with potassium hydroxide solutions of various concentrations was studied by cyclic voltammetry.
With increased awareness about the environment, raw materials from petroleum based synthetics and the "green" quotient of consumer products have developed, shellac or shellac modified resins have gained importance due to their unique nontoxic and hypoallergenic properties. Shellac is water soluble, biologically degrad…
The influence of three oxadiazole derivatives on the corrosion inhibition of steel in 2M H3PO4 solution is studied using weight-loss and electrochemical polarisation measurements. The results show that 2,5-bis(4-methoxyphenyl)-1,3,4-oxadiazole (P4) is the best inhibitor and its inhibition efficiency increases with the…
Polystyrene nanocomposites, being a combination of nanoclay-attached and free polystyrene chains were prepared using in situ atom transfer radical polymerization. Subsequently, they were electrospun to form fibers with diameter varying from 450–700 nm according to scanning electron microscopy data; in addition, the tr…
This paper describes the stabilization of nanocrystalline grain sizes in Pd and Fe by the addition of Zr solute atoms. The grain size as a function of annealing temperature was measured by both x-ray diffraction (XRD) line broadening analysis and microscopy methods. The latter methods showed that the XRD grain size me…
Traditionally, the use of ferrite as a core of the linear variable differential transformer (LVDT) is suggested in its designs. Nevertheless, problems related to its brittleness and low tensile strength may be considered as important drawbacks for its use as a core material, especially when its geometry is likely to b…
Abstract In order to investigate rock dynamic mechanical properties of amphibolites, sericite-quartz schist and sandstone under the different strain rates varying from 30 s -1 to 150 s -1 , the specimens were subjected to axial impact at different projectile speeds by using the split Hopkinson pressure bar (SHPB) of 1…
Hierarchical single-crystalline β-SiC nanowires were synthesized by simply heating carbonaceous silica xerogel. A fairly high density of stacking faults was observed perpendicular to [111] growth direction of the hierarchical nanowires. A possible vapor-solid growth mechanism for the hierarchical nanowires wa…