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 Oxide Electrowinning method has been studied as one of the candidate dry reprocessing concepts of the future fuel cycle systems. On the MOX co-deposition process, the main process of that method, some fundamental experiments have been performed to confirm its feasibility. In the experiments, several parameters wer…
Previously we have proposed a model for the acetate-enhanced corrosion of carbon steel in oilfield brines based on acetic acid (C2H4O2, HOAc) as the dominant reactant in the cathodic reactions leading to corrosion and suggested that corrosion rates may be predicted from a knowledge of the equilibrium composition of th…
The use of alternate cathode materials with improved performance and without any chemical reaction with adjoining electrolyte is required for a reduction in operating temperature of SOFC from 1273 K to about 1073 K (lTSOFC). Cobalt containing perovskite oxides such as LaCoOJ tend to exhibit a higher ionic conductivity…
Flame synthesis of carbon nanostructures including nanotubes on galvanized steel was investigated utilizing laminar diffusion flames of different types of fuel. Methane (CH4), propane (C3H8) and acetylene (C2H2) were used as fuels. Distinctive carbon nanostructures were produced depending on fuel types and fuel flow r…
Isotropic giant negative magnetoresistance (from −42 to −52%) in magnetic fields of 6–9 kOe is revealed for the first time when studying kinetic phenomena and the magnetoresistive effect in silver sulfoselenide ( n -Ag 4 SSe) in the vicinity of a first-order phase transition. The electron transport and the magnetoresi…
Abstract Initial surface oxidation and nanoscale morphology on Cu{100}, Cu(Ag) and Ag/Cu{100} have been investigated in situ by X‐ray photoelectron spectroscopy (XPS), X‐ray induced Auger electron spectroscopy (XAES) and the inelastic electron background analysis as a function of oxygen exposure at 3.7 × 10 −2 and 213…
The electret properties of low-density polyethylene with phosphorus-containing surface nanostructures were examined.
An optimized design on a trench index profile for bend-insensitive SMF is presented. The same dispersion characteristic with standard SMF with ultra low bending loss has been realized by optimization of trench index profile.
Abstract The optical properties of Mn 2+ doped Zn(PO 3 ) 2 glass are discussed. Depending on the manganese concentration in the glass samples, the Mn 2+ emission band appears in the wavelength range from 515 to 620 nm. This behavior depends on the possible coordination number, a result confirmed by different lifetimes…
The recombination of intrinsic point defects in dislocation-free silicon single crystals is investigated. It is established experimentally and confirmed by thermodynamic calculations that this process in the vicinity of the crystallization front is hindered by the recombination barrier. The recombination parameters (s…
Abstract Acid cleaning of mild steel dissolution by 1M sulfuric acid/10 % methanol (test solution) in presence of Arghel herb extract as green inhibitor were monitored by potentiodynamic and electrochemical impedance techniques in the temperature range 30–60 o C. At all temperature, the corrosion rate decreased with i…
Vaccum plasma sprayed tungsten coatings with an evaporated sandwich Re–W interlayer on graphite limiter blocks were studied after the experimental campaign in the TEXTOR tokamak. The coating morphology was modified by high-heat loads and co-deposition of species from the plasma. Co-deposits contained fuel species, car…
Electron emission characteristics of carbon nanotube cathodes with and without reactive ion etching (RIE) followed by KrF laser irradiation were investigated. The emission characteristics of samples without RIE process, such as emission current density, turn-on field, and emission pattern, strongly depend on the laser…
The polyaddition kinetics of 2-methylpiperazine to 1,4-bisacryloylpiperazine was determined in water, methanol, ethylene glycol, formamide, and dimethylformamide, respectively. In the protic solvents, the polyaddition proceeded through a two-step mechanism, each step involved one of the two different secondary amino g…
Abstract In this preliminary work, a new process is examined for manufacturing hollow parts from continuous fiber‐reinforced thermoplastic polymer. The new process combines the basic idea of bag forming (or bladder‐assisted forming) with the rotation of the mold for the processing of thermoplastic matrix composites. A…
Some characteristics of the 2D quasi-periodic Rauzy tiling, which allows parametrization and is obtained from finite torus tilings, have been investigated. The main characteristics of the layer-by-layer growth of this tiling were investigated theoretically and in a computer experiment. The polygonal character of self-…
Multilayered materials and coating are complex structures proposed among others to face the structural requirements of ceramics. The development of reinforcement mechanism by laminated structures can be due to deflection criteria or to the presence of residual stresses and requires of tailored laminates. These designs…
Abstract Nanocomposites based on biodegradable poly(ε‐caprolactone) (PCL) and attapulgite (AT) were prepared by solution mixing. The nonisothermal crystallization of the pure PCL and PCL/AT nanocomposites at different AT contents and different cooling rates were investigated by differential scanning calorimetry (DSC).…
Neste trabalho, envolvendo polímeros biodegradáveis, buscou-se obter indicadores por meio da análise de patentes para avaliar as perspectivas e oportunidades de atuação da área de polímeros. Utilizou-se para tal a base de dados Espacenet e o software Vantage Point. São matéria desse estudo os polímeros: poli(hidroxibu…
Abstract Grain refinement and texture evolution during equal channel angular pressing (ECAP) by route “C” are modelled by the visco-plastic self-consistent (VPSC) model incorporating a disclination-based grain subdivision criterion. Simple shear and analytical fan models are used to describe the deformation history du…