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。
A novel self-healing hybrid-diffuser cesium reservoir photocathode is demonstrated. The model-driven design optimizes operating temperature to match diffusion and evaporation rates and maximize quantum efficiency of the cesiated tungsten surface. A sintered-wire tungsten emitter promotes surface uniformity. Cesium los…
This work describes an easy and flexible approach for the synthesis of 2D nanostructures by external composite field-induced self-assembly. Amorphous iron nanoplatelets with a large aspect ratio were prepared by reducing a concentrated FeSO4 solution with NaBH4 without any templates or surfactants under a magnetic fie…
In this work, the morphology, thermal and viscoelastic properties, deformation and fracture behaviour of a commercial vinylester resin modified with a biodegradable polymer was investigated. Flexural, impact and fracture tests were per-formed on the blends with different polycaprolactone (PCL) contents. They exhibited…
Friction stir processing (FSP) is a simple and effective technique to fabricate aluminium metal matrix composites with uniform particle distribution. In this investigation, AA6063/SiCp bulk composites were fabricated using FSP. Experiments were conducted to study the effect of the feed rate on particle dispersement, h…
The effect of SiO2capping on the optical properties of nanoparticles was investigated. The photoluminescence (PL) intensity was successfully improved by SiO2-capping. Sr2MgSi2O7:Eu,Dy nanoparticles were prepared by laser ablation in liquid. The SiO2capping was performed using the Stöber method with ultrasonication. Th…
The corrosion resistance of stainless steels in their delivered state and after an electrochemical surface treatment was studied by potentiodynamic voltammetry and microscopic analysis. The used electrolyte contained fluoride and sulphate ions. The polishing procedure varied with respect to current densities, polishin…
In the vacuum carburization of steels, short-time carburization is usually followed by a diffusion period to eliminate the filmy cementite (θ) grown on austenite (γ) grain boundaries. The surface C content in γ was found to increase past the solubility of θ due to radical reaction with decomposed hydro-carbon gas. The…
We carried out magnetization and specific-heat measurements of metallic compounds Nb1−xHfxFe2 (x = 0 and 0.65), which exhibit reentrant spin-glass freezing. The frequency dependence of ac susceptibility and the bifurcation between zero-field-cooled and field-cooled magnetization curves suggest the complex coexistence…
A site-isolated SiO(2)-supported Ru-monomer complex, whose structure was characterized by means of solid-state NMR, XPS, UV/vis, and Ru K-edge EXAFS, was found to be efficient for sulfoxidation using an O(2)/aldehyde system. Significant enhancement of sulfoxidation rates was observed on the SiO(2)-supported Ru complex…
The influence of B2O3 additives on the sintering behavior, microstructure, and dielectric properties of Li2MgSiO4 (LMS) ceramics was investigated. The experimental results showed that doping of LMS ceramics with 2 wt % B2O3 caused a decrease in the sintering temperature from 1250 to 810°C. The ceramics produced were d…
The surface modification of a para-aramid fiber was investigated by graft polymerization of a vinyl monomer having an anionic group onto radicals on the fiber surface that were induced by electron beam (EB) irradiation. Generation of the radicals in the fiber irradiated with EB was evaluated, and it was determined tha…
Atorvastatin is a BCS class II lipid lowering agent. It is insoluble in aqueous solution of pH 4 and below; it is very slightly soluble in water and pH 7.4 phosphate buffer. In the present investigation an attempt has been made to enhance solubility and dissolution of poorly soluble drug by formulating self microemuls…
In this work, a novel family of salt-responsive polymeric hydrogel based on collagen was prepared via simultaneously graft copolymerization of acrylic monomers, acrylic acid (AA) and itaconic acid (IA) onto collagen backbones by a free radical polymerization technique using ammonium persulfate (APS) as initiator and m…
This paper discusses the possibility of using a bomb flight control system in the form of a rapidly rotating heavy rotor jointly suspended in its body. Forced deflections of the rotor axis (gyroscope) in relation to the body axis generate torques, which change the direction of bomb flight and its guiding on the target…
Fructose can be efficiently converted to 5-hydroxymethylfurfural by using the functionalized ionic liquid 3-(2-chloroethyl)-1-methylimidazolium chloride as both solvent and catalyst in the presence of water. This work advances the field and is distinct from earlier efforts in the sense that the observed yields of HMF…
Application of air-coupled ultrasonic transducers for damage assessment of composite panels
The outer parenchyma of carrot was tested using dynamic mechanical analysis (DMA), in air with 90% humidity between 30 and 90°C. Temperature plots of storage (SM i.e. elastic) and loss (LM i.e. inelastic) moduli were obtained. The SM and LM values were the basis for the calculation of the loss tangent (LT), the parame…
Activated carbon (AC) was obtained from lignite of the local resource, Golbasi - Adiyaman (Turkey) by chemical activation. The Golbasi lignite was chosen as the precursor for its availability and low cost. The BET surface area of the activated carbon was found 921 m2/g. The AC was used as an adsorbent for Crystal Viol…
Significant progress in controlling low temperature cracking has been achieved by introducing the Bending Beam Rheometer (BBR) and placing appropriate limits on stiffness and relaxation rate (i.e., S and m-value). However, with the increase in types of modifiers and extender oils used to achieve special low temperatur…
Grain boundary engineering aims to improve material performance by optimizing the structure of interfaces in polycrystalline metals. In the present work we grain boundary engineer the Ni-Fe-based superalloy 706 and measure the effect of this process on high temperature crack growth rate. The microstructure of traditio…