Materials Literature
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The process of surface texturing of single-crystal silicon oxidized under a V2O5 layer is studied. Intense silicon oxidation at the Si–V2O5 interface begins at a temperature of 903 K which is 200 K below than upon silicon thermal oxidation in an oxygen atmosphere. A silicon dioxide layer 30–50 nm thick with SiO2 inclu…
A model for describing uranium-plutonium mixed nitride fuel pellet burning was developed. Except fission products generating, the model includes impurities of oxygen and carbon. Nitrogen behaviour in nitride fuel was analysed and the nitrogen chemical potential in solid solution with uranium-plutonium nitride was cons…
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Municipal solid waste incinerators (MSWI) produce by products which can be classified as bottom and fly ashes. The bottom ash accounts for 85–90 % of the solid product resulting from MSW combustion. The aimed of the present work is to study the effect of replacing partial of bottom ash were manufactured. Fresh and har…
A way of synthesizing bimetallic gold/silver nanoparticles with in situ seeding initiated by the addition of sodium borohydride is proposed. The obtained nanoparticles are studied by means of transmission electron microscopy (TEM). Changes in the optical density spectra of the nanoparticles during their coagulation ar…
The wetting phenomenon is related to improvements in the energy efficiency of many industrial devices and processes, including heat exchangers and nuclear power generation. However, despite the benefits of the application of the wetting phenomenon in many industrial devices, the theoretical description of the wetting…
Ni-rich layer LiNi0.5Co0.2Mn0.3O2 cathode materials have been synthesized by Electrospinning and co-precipitation method. The physical, chemical, and electrochemical properties of the LiNi0.5Co0.2Mn0.3O2 nanofibers were investigated by X-ray diffraction, field emission−scanning electron microscopy (FESEM), Fourier tra…
Thixotropy is a common behavior of soft matters widely used in various industries. Numerous models, both empirical and theoretical, have been proposed for different soft matters. In this paper the Maxwell viscoelastic model has been modified by decoupling the second order tensor type equation into vector type equation…
The objective of this work is the study of the pyrolysis process of date palm biomass main constituents related to the Ghars (GH) and Deglet Nour (DN) cultivars, i.e., petiole (KER), palm (DJ), rachis (AD), spathe (KH), fibrilium (LIF), fruit bunch (ARJ), and his peduncle (SA). The pyrolysis behaviour of this lignocel…
Failure of equipment for processing olives interrupted oil production after only three weeks due to tribocorrosive wear of stainless steel components. Tribological behavior of 304 L stainless steel sliding against 52 100 steel was determined using a pin on disc tester. Tribological tests have shown that both normal lo…
Mg-5Sn alloys containing different Zn contents (Zn=1, 2, 3; wt.%) were extruded at 380°C with a extrusion ratio of 29, rolled at 400°C with a total rolling reduction of 50% subsequently. The microstructure, texture and mechanical properties of as-extruded and as-rolled sheets were investigated. The results indicated t…
The well-known Taylor cylinder impact test, which follows the impact of a flat-ended cylindrical rod onto a rigid stationary anvil, is conducted over a range of impact speeds for two polymers, polytetrafluoroethylene (PTFE) and polyetheretherketone (PEEK). In previous work, experiments and a model were developed to ca…
Ejecta can be produced when a shock breaks out of a metallic surface with imperfections. The amount of material ejected depends on the wave profile and the surface finish. This work focuses on techniques to reduce the amount of ejecta produced. As a baseline, a Taylor wave loading was produced by detonating a high exp…
Laser-driven ramp wave compression experiments have been used to investigate the strength (flow stress) of tantalum and other metals at high pressures and high strain rates. Recently this kind of experiment has been used to assess the dependence of the strength on the average grain size of the material, finding no det…
Profile imaging by in situ high-resolution transmission electron microscopy is used to elucidate reconstructions of the GaN(0 0 0 -1) surface during annealing in the TEM. We have successfully captured a detailed process of a change from the stacking sequence of the wurtzite to that of the zincblende structure in the t…
Over the past century, significant research on different aspects of the Hall-Héroult process has been conducted to increase energy efficiency. Bubble generation at the anode reaction and its contribution to the overall voltage drop in aluminium production holds significant potential for energy saving, yet the details…
The effects of microstructure on the spall properties of two magnesium alloys fabricated via Equal-Channel Angular Extrusion (ECAE) and Spinning Water Atomization Process (SWAP) were investigated. The Hugoniot Elastic Limit (HEL) for both AZ31B-4E and AMX602 magnesium alloys were found to be approximately 0.181±0.003…
Aluminum-plastic composite panel is a kind of new type energy-saving and environmental-friendly curtain wall decorative material, and is widely used in building exterior wall, curtain wall board, old building reconstruction and renovation and other projects. With the development and improvement of production and appli…
The degradation activation energy of PEG-quartz composites has been determined using Dynamic Mechanical Analyser (DMA) data by varying the frequency in the shear mode. Frequencies of 1, 10, 100, and 200 Hz were applied. The content of quartz (SQ) as the filler was 0, 20, 40 wt.%. DMA measurement results showed that th…
In article 1603544, S.-W. Kim and co-workers introduce graphene tribotronics for touch-sensing applications. The working mechanism is based on a coplanar coupling of triboelectrification and current transport in graphene field-effect transistors. The touch sensors are ultra-sensitive, fast and can spatially map the mo…