نتایج جستجو برای: molten materials
تعداد نتایج: 444543 فیلتر نتایج به سال:
We report the bulk synthesis of hydrogenated, amorphous SixNy and SixOy nanowires using pools of molten gallium as the solvent medium and microwave plasma consisting of silane in nitrogen and silane in oxygen respectively. High densities of multiple nanowires nucleated and grew from molten gallium pools. The resulting nanowires were tens of nanometers in diameter and tens of microns long. Elect...
One-dimensional (1D) semiconducting nanoscale materials have attracted considerable attention because of their importance in understanding the fundamental properties of low dimensionality in materials as well as in nanodevice applications. Many methods, including vapor–liquid–solid (VLS), vapor–solid (VS), and solution-based, have been developed to synthesize 1D semiconducting nanoscale materia...
[Physical properties and metal elutions of the thirteen molten slags produced from incinerated ash].
In recent years, there have been many attempts to reuse molten slag. Molten slag is obtained through further treatment of incinerated ash produced in the disposal process of garbage or sewage sludge and is used in building materials, such as brick. To establish the safety of such slag, its physical properties and metal contents were investigated in this study. After examining the physical and c...
Ceria nanoparticles are one of the key abrasive materials for chemical-mechanical planarization of advanced integrated circuits. However, ceria nanoparticles synthesized by existing techniques are irregularly faceted, and they scratch the silicon wafers and increase defect concentrations. We developed an approach for large-scale synthesis of single-crystal ceria nanospheres that can reduce the ...
Little is known about the real conditions in the earth’s interior because direct sampling is not feasible. The propagation of seismic waves is the only instrument for investigating the mantle. Therefore, viscosity η is of prime importance. Experimental data indicate that mantle viscosity is about 1022 Pa s. At such a high viscosity even molten materials behave like solids. The aim of the presen...
Materials synthesis often provides opportunities for innovation. We demonstrate a general low-temperature (260°C) molten salt electrodeposition approach to directly electroplate the important lithium-ion (Li-ion) battery cathode materials LiCoO2, LiMn2O4, and Al-doped LiCoO2. The crystallinities and electrochemical capacities of the electroplated oxides are comparable to those of the powders sy...
• Chipping, sledging and hammering on metal, stone or concrete • Use of manual, pneumatic and power impact tools • Caulking, brushing and grinding • Drilling, scaling and scraping soldering and casting hot metals • Handling acids, caustics and creosoted materials • Gas welding, cutting and brazing • Drilling overhead • In environments of excessive dust • Electric arc welding and cutting, and ot...
S. Golak, R. Zagorski Silesian University of Technology, Faculty of Materials Engineering and Metallurgy, Katowice, Poland Electromagnetic buoyancy force causes the mo vement of nonconducive par ticles in a c onducting liquid under electromagnetic fi eld. The phenomenon allows fi ltration of small inclusions from molten metals. This paper presents a mathematical model of the fi ltration process...
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