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。
Ming-Siao Hsiao, Yang Jiao, Richard A Vaia, Lawrence F Drummy; Microscopic Characterization of Fracture Mechanisms in Polystyrene Grafted Nanoparticle Asse
In drilling and production process, the barite powder serving as weighting agent is added to ensure operation safety when overflow occurs, that results in reservoir pollution and pore blockage. The main component of barite is BaSO 4 , so ammonium carboxy chelating agents can be injected into formation to form stable c…
( 7 Li, 1 H) NMR and impedance spectroscopy methods are used to study the ion mobility and conductivity in a complex of the composition Li(NH 3 CH 2 COO)(NO 3 ) ( I ), which has a layered crystal structure. The character of ion motions in lithium and proton sublattices with temperature variation is considered; the typ…
The diatom assemblages of the surface sediments have been studied in 53 urban ponds and lakes of St. Petersburg for the first time. In total, 350 species and infraspecific taxa have been registered; the species of Achnanthidium , Cocconeis , Cyclostephanos , Cyclotella , Gomphonema , Lemnicola , Navicula , Nitzschia ,…
This paper reports a new method of increasing surface flashover voltage on GIS epoxy spacer with incorporating nano/micro composites in SF6gas. Simulation on the electric field grading effect on the surface flashover voltage for a GIS insulator model is carried out with nano/micro composites. To confirm the field grad…
Withstand lightning impulse voltage test is generally carried out for guaranteeing equipment's insulation performance. On the other hand, it is concerned that other insulation performances are influenced by applying impulse voltage. For example, an AC PD (partial discharge) test changes after a number of impulse volta…
As the use VLF diagnostic testing is a promising trend, it is important to investigate PD characteristics during aging at very low frequency range. Test samples of solid insulation with voids inside fabricated by a 3D printer are subjected to VLF excitation for PD measurements. PD characteristics at different aging st…
Zinc-iron alloy plating (ZnFe) was successfully deposited on AISI 4140 steel applying cyclic voltammetry technique. Polyaniline (PANI) film was synthesized with cyclic voltammetry technique from 0.10 M aniline containing 0.30 M oxalic acid solution on zinc-iron plated carbon steel (AISI4140/ZnFe) electrode. ZnFe film…
Electrical insulation materials with high thermal conductivity can protect equipment from heat fault and extend the working life of polymeric components. A nanodiamond/epoxy polymer network was developed based on surface modification of the nanodiamond. A simple oxidation strategy was used to modify the surface functi…
Charge trap is considered to be one of the effective characteristic parameters for qualitatively evaluating the aging status of insulating material. In this paper, the trap characteristics in oil-impregnated paper with different aging types (non-treatment, thermal treatment and electrical treatment) are investigated u…
The Ba0.5Sr0.5Co0.8–x W x Fe0.2O3–δ (х = 0–0.1) materials prepaMIECred by partial substitution of cobalt in BSCF with tungsten were studied. The tungsten solubility limit in the structure of cubic perovskite BSCF was shown to be ~2%. The doping with the highly charged W6+ (2%) cation improved the functional properties…
We investigate the kinetics of photodarkening and recording of holographic diffraction gratings in amorphous As 4 S 3 Se 3 thin-film structures doped with tin (Sn) in concentrations of 0–10 at %. It is established that an increase in the Sn concentration leads to a decrease in the photodarkening rate and degree. The p…
Manufacturability of composite heterostructures on the basis of a porous ceramic (Al 2 O 3 ) with metal layer (Pd–Cu) used for the development of the membrane elements of selective filters for deep purification of hydrogen is shown. Data on the structure, mechanical properties, and water permeability are obtained.
In Tb(Pc)2 single-molecule magnets, where Pc is phthalocyanine, adsorbed on magnesium oxide, the fluctuations of the terbium magnetic moment are strongly suppressed in contrast to the adsorption on silver. On page 5195, J. Dreiser and co-workers investigate that the molecules are perfectly organized by self-assembly,…
R. Zbořil and co-workers show that doping a graphene lattice with sulfur induces magnetic centers which display ferromagnetic order below ≈62 K. As described on page 5045, sulfur doping promotes magnetically active configurations resembling the gamma-thiothiapyrone motif. Enhanced magnetic properties of sulfur-doped g…
The potentials of Sn, In, or Al doped ZnSb thin film as candidates for phase change materials have been studied in this paper. It was found that the Zn-Sb bonds were broken by the addition of the dopants and homopolar Zn-Zn bonds and other heteropolar bonds, such as Sn-Sb, In-Sb, and Al-Sb, were subsequently formed. T…
Arrojadite-(BaNa), BaNa3(na,ca)Fe2+ 13al(PO4)11(PO3OH)(OH2, is the Na-, Ba-rich member of the arrojadite group. This primary phosphate was found at the Luna albite pegmatite, Dorio, Lecco province, Italy where it occurs associated with fluorapatite in the blocky-albite unit of the pegmatite. This new phosphate forms g…
A systematic investigation of the effect of WO3 loading over V2O5/TiO2 catalysts was carried out for the selective catalytic reduction of NO by NH3. The characteristics were examined use BET surface area , X-ray diffractometry (XRD) , Temperature programmed desorption (TPD) of NH3 . It was fund that the WO3 species co…
The polarization effects on the two-dimensional electron-gas (2DEG) of the ZnO/MgO/MgZnO heterostructure were theoretically investigated. The carrier confinement in the MgZnO/MgO/ZnO high-electron-mobility transistor (HEMT) structure is shown to be superior to that in the conventional MgZnO/ZnO HEMT structure. The ele…
Mechanical properties and corrosion resistance of metals are closely related to the microstructure characteristics of the material. The paper compares the results of these two sets of properties after investigating samples of base ductile iron and heat-treated samples of the base austempered ductile iron (ADI). The ba…