Materials Literature
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Polycrystalline Cr2AlC was fabricated by a solid reaction synthesis of a mixture of Cr, Al and graphite powders in a flowing or the atmosphere in the temperature range of 700 to 1450 °C. The products for identification and analysis were characterized by X-ray diffraction (XRD). The effects of the composition of the in…
Bi2.9Pr0.9Ti2.97V0.03O12 (BPTV) ceramics were prepared by solid state reaction. These samples had polycrystalline Bi-layered perovskite structure without preferred orientation, and consisted of well developed plate-like grains with random orientation. BPTV caused a large shift of the Curie temperature ( TC ) of Bi4Ti3…
Nanowires of sodium titanate, TiO2 and Eu3+/TiO2 were synthesized by hydrothermal method, and their microstructure, optical properties and valence states of exterior elements were characterized by X-ray powder diffraction (XRD), scanning electron microscopy(SEM), X-ray photoelectron spectroscopy (XPS) and UV-Vis diffu…
Nb1-xTixSe2(x=0～1) micro/nano-particles have been successfully prepared via solid-state thermal (750°C) reaction between microsized Nb, Ti with Se powders under seal environment in a seal quartz tube and characterization by X-ray diffractometer and scanning electron microscopy. It was found that the morphologies of th…
(0.996-x) K0.5Na0.5NbO3- 0.004 BiFeO3- x LiSbO3 (x =0.00, 0.02, 0.03, 0.04, 0.05, 0.06, 0.07) lead-free piezoelectric ceramics were prepared by the conventional mixed oxide method. The compositional dependence of the phase structure and the electrical properties of the ceramics were studied. A morphotropic phase bound…
Fe3+-doped TiO2/diatomite composite photocatalyst were prepared by sol-gel method with titanium isopropoxide used as precursor material. The samples were characterized by SEM, XRD, XPS, BET surface area analysis and UV-Vis techniques. The results showed that the optimum concentration of Fe3+ in the composite catalyst…
Two-dimensional event-driven simulations are employed to gain insight into the granular energy and segregation in granular gases with a Gaussian particle size distribution when exposed to a differential heating mechanism. It is found that the bulk value of the temperature ratio depends on the choice of differential bo…
The first-principles calculations are performed to investigate the adsorption of O 2 molecules on an Sn(111) 2 × 2 surface. The chemisorbed adsorption precursor states for O 2 are identified to be along the parallel and vertical channels, and the surface reconstructions of Sn(111) induced by oxygen adsorption are stud…
In this paper, the static pull-in instability of beam-type micro-electromechanical systems (MEMS) is theoretically investigated. Two engineering cases including cantilever and double cantilever micro-beam are considered. Considering the mid-plane stretching as the source of the nonlinearity in the beam behavior, a non…
High-performance detectors with high spatial and time resolutions are required in applications such as imaging of fast processes, time-resolved coherent scattering, and time-resolved X-ray spectroscopy. Recently a new type of X-ray detector was proposed, based on microchannel plates (MCP) coated with resistive and emi…
Uyghur is one of the oldest ethic groups which enjoy a long history. Uyghur people are noted for their diligence, enthusiasm, expert in singing and dancing. In the long historical development, Uyghur people have created profound and extensive art and culture. Gorgeous clothing is a necessary part of Uyghur dress cultu…
In this paper, the flexibility of the cross axis and furcated frame of high speed rapier loom was considered through the change of the two components’ material. Corresponding neutral documents were generated in ANSYS, then with the ANSYS-ADAMS co-simulation, those neutral documents were imported into ADAMS. The motion…
In this work, the properties of LDPE were modified by SiO2-EVA (Ethylene Vinyl Acetate copolymer) composite, while EVA contributed to prevent nanometer SiO2 particles from conglomerating. The results show that the polarity of nano-modified PE films increase from 30 dyne/cm to 35 dyne/cm, the friction coefficient drop…
This research focuses on the effect manufacture factors about the brightness and uniformity of multi-stage reflector. Trace-pro and 3D CAD model were used for optical simulations. The optical simulation results of grating lens and reflector were done as well as successfully developed the LED fog lamp. The results meet…
Biodegradable film blends of soya bean flour with poly (vinyl alcohol) (PVA) were prepared by solution mixing and solution casting. The main goal of this study is to investigate the effect of soya bean flour content in the PVA film. Mechanical properties of the obtained blends were assessed by tensile testing, whereas…
We propose the design of graded index metamaterial lens using pneumatic actuation for switching between focusing and non focusing states and operating at 9 GHz. Graded refractive index is engineered by using split ring resonators of different widths. Choice of electrical resonators allows planar design and significant…
Three technologies of insulator online monitoring based on optic fiber sensors is described in proposed paper, including optic fiber sensor salt density technology, optical fiber composite insulator monitoring technology and optical sensor insulator surface electric field detection technology. According to measuring i…
The behavior of the magnetic losses in Fe-Si crystals in rotating and linear-polarized fields has been studied and particular features of the dependence of the ratio of these losses on the induction amplitude have been revealed. It has been demonstrated that abnormally high magnitudes of magnetic losses in rotating fi…
Electroplated copper thin films have started to be applied to the Through Silicon Via (TSV) interconnections. Unfortunately, however, the electrical resistivity of the electroplated copper thin films was found to vary drastically comparing with those of the conventional bulk copper. This was because that the films con…
Based on use of Debye’s potentials one can find the direct solution of the problem of definition of the characteristic equations for wave numbers of three-dimensional and axis-symmetrical (flexural and longitudinal) elastic waves in steel and aluminium cylindrical shells of various thickness.