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。
The iron-based F-doped superconductors LaFeAsO 1− x F x with a transition temperature of 24 K (for x = 0.07) and 26 K ( x = 0.11) and its parent material LaFeAsO were studied using 57 Fe Mössbauer spectroscopy. Further investigation was carried out by applying external magnetic fields. F-doped superconductors showed a…
Nano-sized MgAl2O4 powders were treated at 500~1000 oC in a vacuum of 10-3Pa for 2 h, and then sintered at 500~900 oC under 1~6 GPa. The powders with and without vacuum-heat-treatment were investigated by means of Transmission Electron Microscope (TEM) and Sedimentation Test. It was found that the vacuum-heat-treatmen…
Fe-Al2O3 films have been prepared by on-off deposition of Fe with continuous Al2O3 deposition, and also subsequently irradiated by 400 keV Ar ions for controlling of the structural and magnetic properties of the films. CEM spectra of the as-deposited films show the decrease in the average hyperfine fields (Hhfs) with…
Quasicontinuum simulation of nanometric cutting was conducted on single crystal copper to investigate the effect of crystal orientation and cutting direction on nature of deformation of this material. The model reduces the degrees of freedom in simulations of nanometric cutting process without sacrificing important ph…
In this work we present the synthesis of branched gold nanoparticles based on the seed mediated growth technique. The materials have been characterized by advanced electron microscopy techniques in order to elucidate morphology, size and internal structure.
The relative concentrations of tie chains (TCs) in six single-site linear low-density polyethylene blown films (LLDPE) were measured using a polarized Fourier transform infrared (FTIR) technique along with a newly developed sample preparation strategy. Before the FTIR measurements, the films were first subjected to a…
The synthesis of poly(acrylonitrile-butadiene-styrene) (ABS) was carried out using the mass-suspension process, high cis polybutadiene (PB), benzoyl peroxide (BPO) as the initiator and modified and unmodified nanoparticles of zinc oxide (nano-ZnO). X-ray diffraction (XRD) and Fourier transform infrared (FTIR) were use…
Abstract
The new metal-cored wires with Fe-Si-Mn-Ti-B microalloyed series were prepared to meet demands of GMAW surfacing rapid forming technology. The microstructure and performance characteristics of parts produced with them are both investigated. Its continuous metallographic microstructure along the deposition height direc…
Abstract Copper soaps have been prepared from fresh and used sesame oils. The formation of copper soaps has been confirmed by spectral technique. Micellar characterization of copper soaps has been studied by density, viscosity and ultrasonic measurements. The apparent molar volume and apparent molar compressibility ha…
Molecular dynamics and Monte Carlo techniques are employed for the study of Lennard–Jones fluids near the solid–liquid transition region. Systematic comparisons between the predictions of both techniques are discussed, with particular emphasis on the structural evolution and location of the transition (melting) temper…
Abstract not provided.
Article Crystal structure of (1,10-phenanthroline)-(1,4-benzenediacrylato)-(hydrogen 1,4-benzenediacrylato)dysprosium(II) hydrate, Dy(C12H8O4)(C12H9O4)(C12H8N2) · 0.25H2O was published on March 1, 2010 in the journal Zeitschrift für Kristallographie - New Crystal Structures (volume 225, issue 1).
Exhaust gas recirculation (EGR) cooler plays an important role in reducing the nitrogen oxides (NOx) emission of diesel engines. By using the CFDesign software, in this paper, the finite element models are established for analyzing the thermodynamic performance of an EGR cooler. The temperature, velocity and pressure…
CNTs/AlN ceramics were fabricated by hot-pressing and their bulk density, flexural strength, thermal conductivity were characterized. The microstructure was also investigated. The fracture surface were analyzed by SEM. TEM was used for analyzing the microstructure. It is found that the density, mechanic and thermal-co…
Development of ultra-smooth surface processing technology has great effect on the frontier technologies and defense industry, this attracts many countries to invest and highlight the research works related to ultra-smooth surface abrasive flow polishing technology. This paper gives a global review on the functional ef…
First-principles density-functional theory (DFT) calculations have been used to investigate the electronic structure and total energy of Pu. In particular, we will present calculated electronic and elastic properties for several of its known phases. Generally, our obtained results compare favorably with the existing e…
Abstract Today, the cleanliness assessment of bearing steel is usually performed by using standard metallographic methods such as ASTM E45, DIN 50602, Norme Internationale ISO 4967, ASTM 2283, etc. These methods are based on the estimation of indexes, and they use either reference images given by charts (Plate I-r for…
Superelasticity is closely related to shape memory effect. It refers to the property presented by some materials submitted to large strains (usually up to about 8%) to restore their original shape immediately after unloading without the need of heating. This phenomenon results directly from a diffusionless transformat…
In this paper, a novel wideband leaky wave antenna using a composite right-/left-handed transmission line for UHF band are proposed. The antenna is composed of a ladder network less than one wavelength. Transmission and radiation characteristics of the leaky wave antenna are measured. The fabricated leaky wave antenna…