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。
Utilization of thermoset resin as a bumper beam composite matrix is currently more dominated in car manufacturer suppliers, because of availability, easy processing, low material cost and production equipment investment. Moreover, low viscosity, shrinkage and excellent flow facilitate better fibre impregnation and pro…
The present paper deals with the formation of macrosegregation in a benchmark ingot using (Fe-C-Cr) ternary alloy composition. The numerical investigation of complex multiphase phenomena is a difficult study, because the thermophysical properties depend strongly on the temperature, concentration, pressure and chemical…
The low-frequency lattice dynamics of lead magnoniobate has been studied using inelastic neutron scattering in the temperature range 650 K < T < 1050 K. The measurements have been performed in two Brillouin zones, (200) and (300). The data corresponding to these two zones and different values of the reduced wave vecto…
Various kinds of β-Ga 2 O 3 nanomaterials such as nanowires, nanorods, nanobelts, nanosheets and nanocolumns have been successfully synthesized by simple evaporation of gallium powder with no assisted catalyst in a flow of argon gas. The as-synthesized materials were pure, structurally uniform, single crystalline with…
Previous works have shown that ceramic matrix composites are sensitive to delayed failure during fatigue in oxidizing environments. The phenomenon of slow crack growth has been deeply investigated on single fibers and multifilament tows in previous papers. The present paper proposes a multiscale model of failure drive…
The temperature-dependent electronic structure of ferromagnetic double perovskite La2MnNiO6 has been investigated by employing soft x-ray magnetic circular dichroism (XMCD) and soft x-ray absorption spectroscopy (XAS). The measured 2p XAS spectra for Mn and Ni ions at low temperature show that most of Mn ions are form…
SiCH films are a potentially very useful low- k cap layer for covering Cu trenches in ultralarge-scale integration (ULSI) devices. To induce Si–C 2 H 4 –Si networks in SiCH film structures, 1,1-divinyl silacyclopentane (DVScP) and 5-silaspiro-[4,4]-nonane (SSN) were designed and prepared. Isobutyl trimethyl silane (iB…
We perform a first-principles simulation to study the electronic and optical properties of wurtzite Zn 1– x Cu x O. The simulations are based upon the Perdew–Burke–Ernzerhof form of generalised gradient approximation within the density functional theory. Calculations are carried out in different concentrations. With i…
Abstract The equilibrium conditions of four duplex stainless steels; Fe‐23Cr‐4.5Ni‐0.1N, Fe‐22Cr‐5.5Ni‐3Mo‐0.17N, Fe‐25Cr‐7Ni‐4Mo‐0.27N and Fe‐25Cr‐7Ni‐4Mo‐1W‐1.5Cu‐0.27N were studied in the temperature region from 700 to 1000 °C. Phase compositions were determined with SEM EDS and the phase fractions using image anal…
Nanocrystalline Ni–Zn ferrites were synthesized by a novel combustion route without post annealing process. The sintered ferrites characterized by X-ray diffraction have shown highly pure nanocrystalline phase. Calculated by the Scherrer’s formula, the estimated crystallite size is about 26–41 nm and lattice constant…
CdSe and PbSe quantum dots (QDs) were precipitated in oxide glass matrices and their optical properties were investigated. The size of QDs could be controlled using careful heat treatment. The quantum confinement effect was clearly observed, as evidenced by a shift in the peak wavelengths of absorption. It was possibl…
La ( Fe 1 − x − y Co x Si y ) 13 ingots with x=0.112, 0.154, and 0.170 and y=0.021, 0.042, 0.063, and 0.085 were processed by Ar arc melting and annealing at 1050 °C for different periods of time up to 12 days. For y=0.085, the Curie temperature of the specimens, optimally annealed to develop the cubic NaZn13-type pha…
In this paper, the role of misorientation angle and coincident site lattice (CSL) boundaries in promoting Goss-textured abnormal grain growth (AGG) in polycrystalline (Fe81Ga19)+1.0 mol % NbC rolled sheet is investigated through electron backscattering diffraction (EBSD) patterns captured by orientation imaging micros…
A dual-band integrated self-biased edge-mode isolator based on the double ferromagnetic resonance of a CoFeB ferromagnetic nanowire (FMNW) substrate, controllable by the geometrical and composition parameters of the FMNWs, is presented. The dispersion diagram of the FMNW edge-mode isolator, taking into account the eff…
We report initial results on designing and manufacturing a Schmidt-like corrector plate for a commercial off-the-shelf cylindrical lens, eliminating the cylindrical equivalent of its spherical aberration. The corrector is made by figuring the correction profile onto a precision glass window, which is subsequently alig…
Using first-principles calculations, we investigate structures and electronic properties of ZnO nanoribbons with different widths. By loaded strain along the periodic axis the ZnO zigzag nanoribbons are transformed into new ground state featuring square lattice. We find that this new ground state is semiconducting, wh…
A method is proposed for detecting spectral characteristics of optically inactive molybdates of rare-earth elements by their doping with rare-earth ions whose luminescence lies in the transparency region of all structural modifications of the sample. Gadolinium molybdate is chosen as the object of investigations, whil…
The strict theory of the complex variable function method for the sextuple harmonic equation is given in detail, which is a development of the work on the quadruple harmonic equation of the authors. Both of the above mentioned works develop the well-known Muskhelishvili complex variable function method for solving the…
Recent work with Spindt cathodes has shown that past unreliable behavior has not been due to poor tip uniformity and the failure of over-achieving tips as has been widely believed. Rather the failures have been due to flashover along oxide walls in the cathode cavities. A new cavity architecture has solved the problem…
In this contribution we propose a two-dimensional metamaterial unit cell which synthesizes equivalent material parameters needed for `transformation optics', as introduced in. The proposed metamaterial consists of a grid of reactively loaded transmission-line segments and is a variation of the unit cell presented in,…