Materials Literature
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The insulators coated with super-hydrophobic coating have good performance of anti-icing. But the super-hydrophobic coating can't completely preventing ice accumulation, especially the soft rime. In order to solve this problem, a kind of semiconductor coating was prepared in this paper,and then the super-hydrophobic c…
2D-Planar and 3D-cylindrical nanoporous anodic aluminium oxide was fabricated by anodization of high purity aluminium. High yield of alumina nanowires were prepared from planar and cylindrical nanoporous aluminium oxide film by chemical etching in H3PO4aqueous. The tensile stress at the aluminium oxide/aluminium inter…
T-joints between fiber reinforced composite material components are widely used in ship building. They are the weak positions in ship structure on mechanical properties aspect. Through experiments, the effects of structure size and technics on joint deformation and destructive strength were researched. Destructive str…
We discuss how a three-level system can be used to change the frequency-dependent magnetic permeability of a dense atomic gas to be significantly different from 1. The results show that a negative permittivity and permeability simultaneously with transparent propagation of the electric part of the probe filed can be o…
We synthesized various sizes of nanocrystalline yttria-stabilized zirconia (YSZ) for an electrolyte in solid-oxide fuel cell (SOFC) by using the sol-gel method. The surface morphology and the thermo-mechanical properties for different nano-grain sizes were characterized. The YSZ grains were found to grow non-linearly,…
We report on the simulation and experimental demonstration of Brewster lenses in the terahertz range. These lenses can be operated under the Brewster angle, ensuring reflection-free transmission of p-polarized light in a broad spectral range. The excellent focusing capabilities are verified by focus plane measurements…
Power transformer is one of the most important apparatus in the power system. Incipient faults in transformer can degrade both oil and cellulose insulation, leading to the formation of dissolved gases. Partial discharge (PD) is regarded as a cause as well as an indicator of the insulation degradation. This paper prese…
Adhesion is one of the most important characteristic of gas thermal spray coating for any purpose. To analyze the mechanism of the adhesion connection formation of the coating with the substructure in, atoms activation of the substrate surface is considered with the help of the kinetic equation of the reaction speed.…
Abstract The title ammonium compound ethyl 2‐(4‐aminophenoxy)acetate (C10H13NO3, I) and its crown ether inclusion complex {[(C10H14NO3)·(18‐crown‐6)]+[PF6]−, II} (18‐crown‐6=1,4,7,10,13,16‐hexaoxacyclo‐octadecane) were synthesized. The ammonium compound I was determined by 1H NMR, IR and ESI‐MS techiniques. X‐ray crys…
This paper presents a methodology to synthesized zinc oxide (ZnO) films by an aqueous chemical growth based technique. Structural, morphology and optical properties of ZnO films were characterized using X-ray diffractometry (XRD), field emission scanning electron microscopy (FESEM) and UV-Visible spectroscopy. This pa…
Three kinds of TiO2 materials named Ti0, Ti0.5 and Ti1.0 were prepared via hydrothermal synthesis method using Tetrabutyl titanate (TNB) as the material and different amounts of Gemini Surfactant we prepared as the template. Then the prepared TiO2 nanoparticle was characterized by Scanning electron microscope(SEM), X-…
In the current study, 20 nm zinc oxide nanoparticles were used to make high-density ZnO discs doped with Bi2O3and Mn2O3via the conventional ceramic processing method. Different sintering temperatures were found to have significant impacts on the ZnO discs, especially on enhancing grain growth even at a low sintering t…
Isothermal compression of the TC11 titanium alloy has been conducted on Gleebe-1500D hot-simulator at the deformation temperature ranging from 960°C to 1050°C, the strain rate ranging from 0.01s-1to 10s-1, the maximal engineering strain 50%. Based on dynamic materials model (DMM) theory, the hot processing maps for TC…
Acetate-citrate precursors were applied to synthesize amorphous gelatinous calcium barium selenate with molecular formula (Ca 0.5 Ba 0.5 Se 2 O 5 ). The gel-product was sintering at 800°C for 2 hrs then well characterized by X-ray diffraction, SEM and EDX elemental analyses and proved that the product Ca 0.5 Ba 0.5 Se…
Memristor structures based on tunnel-thin organic dielectric and porous silicon layers are investigated.
This paper studies the infrared emissivity of Zn0.99-xNi0.01CoxO (x=0.00, 0.01, 0.03, 0.05) powders prepared by solid-state reaction. The phase and morphology of samples were characterized by XRD and SEM. The UV absorption spectra and infrared emissivity at the wavelength of 8-14μm were measured by UV Spectrophotomete…
Active layer’s morphologies properties are important for the optoelectronic devices. In this paper, the morphologies properties of the carbon nanotube/polyaniline composites thin film formed by spin coating were studied by the atomic force microscopy (AFM). The results showed that spin coating way greatly affects the…
Polymer electrolytes since the 1970s, the PV Wright, PEO polymers and inorganic salts can form complexes with high ionic conductivity. Thereafter, on a global scale, set off a craze of the theory with solid polymer electrolyte materials research and technology development, a lot of research work has been in the field…
Formation mechanisms of paramagnetic centers originating from Zr3+and Cr3+ions as well as the influence of composition of nanoparticles on thermogeneration processes of these paramagnetic centers in ZrO2structure were studied. A set of nanosized powders of zirconium oxide was investigated by electron paramagnetic reso…
Changes in the optical properties of a Si layer broken as a result of implantation by Zn ions are investigated during thermal annealing. The investigations are performed by Raman scattering (RS), ellipsometry, and cathodoluminescence (CL). The implanted samples show a broken area with a thickness of about 60 nm with p…