Materials Literature
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The fabrication process and fracture characterization of 35 and 65 vol% SiCp particulate-reinforced Al matrix (SiCp/Al) composites have been investigated. SiCp composites having different volume fractions of the n-SiCp were synthesized via by pressureless-infiltration at near-net-shape route and were uniaxially tested…
Composite microspheres of polystyrene and nanoFe3O4 particles were prepared through emulsifier-free polymerization with ultrasonic dispersion. The properties of composite microsphere were investigated by FT-IR spectrum, X-ray diffraction analysis, TEM, SEM and VSM. The determine results showed that Fe3O4particles prep…
Lightning impulse test for power transformer is a highly theoretical and empirical analysis tests for insulation assessment attaches great importance to the power transformer. Facing the problems of detection and diagnostic method based on lightning impulse test for power transformers, this paper proposes a new method…
To improve the structure order and catalytic activity of mesoporous materials, cubic (SBU-MCM-48) and hexagonal (SBU-MCM-41) mesoporous aluminosilicates containing secondary building units characteristic of zeolite Beta have been prepared, and characterized by means of XRD, N2 adsorption, IR spectroscopy, catalytic cr…
Anatase crystalline TiO2 aeroge and TiO2 aerogel doped with Fe3+ were prepared at low temperature (60°C) using ionic liquid (IL) assisted sol-gel method. In this system, ionic liquid was not only an effective solvent but also an important template, which enhanced the polycondensation and crystallization rate, facilita…
In order to study the saturation control of space juxtaposition mixed colors of yarn dyed fabrics with different warp and weft colors, this paper takes the fabric variety with 6-color warp and 3-color weft for example, designed 7 kinds of weaves with gradual change of floating length with red, green and blue and makes…
Efficient 1310 nm light detection has been demonstrated in nanoscaled silicon p/n junction devices. The bias dependent response of the nanowire and waveguide devices shows efficient sub-bandgap photoresponse without involving any defects or surface states.
Porous barium titanate (BaTiO3, BT) ceramics were prepared by a conventional sintering method using two kinds of BT particles. The relationship between pore structure (porosity and pore size) of BT ceramics and their sensor properties was investigated. Since a piezoelectric d33 constant of BT depends largely on the po…
Pores are common defects in the coating formed via plasma spraying. In order to investigate the formed mechanism of pores in plasma sprayed nanostructured Al2O3-TiO2 coatings, the microstructure of the feed stock, splat and coating were characterized by means of scanning electron microscopy (SEM). The coating shows a…
Abstract Bainitic cast steel is a kind of wear resistant material which has high strength and toughness, and can usually be obtained by isothermal quenching or molybdenum alloying. However, isothermal quenching has lower production efficiency and molybdenum alloying has higher production cost. In this paper, according…
La1-xBaxTa (O,N)3 oxynitrides were synthesized by ammonolysis of oxide precursors, prepared by a complex polymerization method. The absorption edge of the solid-solutions did not show a blueshift with an increase of x, in spite of the increase of O/N ratio, but rather the edge was redshifted. The substitution of La3+…
Porous peanut-like Sm-doped BiVO4 sub-microstructures were synthesized via a hydrothermal process with bismuth nitrate, ammonium metavanadate and Sm (NO3)3 as raw materials. The crystal structures, morphologies, and optical properties of the as-prepared samples were characterized by X-ray powder diffraction, transmiss…
In order to have comprehensive understanding and better application about Modal fibers, the microstructure of Lenzing Modal (MD), Birla Modal (BLM) and Formotex Modal (FM) siro-spun yarn was investigated by XRD and FTIR spectroscopy. The tensile properties of the yarn were measured by an Instron tensile tester, the ha…
A non-chromate conversion coating was prepared from molybdate based bath on the surface of Zn-5%Al hot dip galvanized steel. The influence of the preparation conditions such as temperature, bath pH and treating time on the corrosion resistance of the obtained conversion coating was investigated. The corrosion performa…
We report on injection induced terahertz electroluminescence from SiC p-n junctions. The emission is assigned to intracenter optical transitions in shallow donors, initiated by the injection.
This study focuses on surface modification of local made fibres for use as reinforcement in the area of polymer matrix composite. Modified oil palm and Rice husk fibres were prepared by using alkaline treatment and the samples were investigated by using Helium pycnometry, Fourier transform infrared spectroscopy (FT-IR…
Here a simple method was developed to fabricate hydrophilic Polyethersulphone film via a sol-gel process. The correspondent hydrophilicity was evaluated by infrared spectral analysis, X-ray photoelectron spectroscopy, the contact angle measurement, atomic force microscope and scanning electron microscope analysis, res…
The research relates to a method for preparing an in-situ crosslinked polymer coating. It has excellent solubility in aqueous alkaline solution, but didnt dissolve in general organic solvents and water. The crosslinked polymer coating was made through the reaction of a copolymer derived from diacetone acrylamide (DAAM…
For hybrid and electric vehicle, high powers are needed for the acceleration, startup and recovery phases. For that, the chosen storage system must insure these high powers. The supercapacitors are powerful storage systems, which can reach more than 4,3kW/kg of specific power, and very high lifetime compared to the ot…
In this paper a theoretical investigation, based on the micromagnetic dynamical matrix method, of the metamaterial properties of a three-dimensional binary magnonic crystal is performed. The system is formed by a periodic array of cobalt circular dots partially embedded into a permalloy film 16 nm thick. The periodici…