Materials Literature
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Abstract The topic of the paper are emulsion fuels, which are the most effective way to reduce NOx emissions from motor vehicles. The macroemulsion fuels are characterized by a number of disadvantages, which include the limited stability of the emulsion, unacceptable low temperature properties and a strong tendency to…
In this work we have studied the effects of Zn and ZnO addition on grain boundaries in the magnetic properties of NdFeB magnets. Zn and ZnO were added at the grain boundaries by double alloy process. Study on Zn and ZnO were effected of sintered NdFeB permanent magnetic materials .Results show that Zn and ZnO powder w…
Nanoparticle Mn-Zn-Ni ferrite powders, Mn1−2x Zn x Ni x Fe2O4 (0.0 ≤ x ≤ 0.3), were fabricated using the sol-gel method, and their structural and magnetic properties were investigated. Using X-ray diffraction and Mössbauer spectroscopy, we confirmed the formation of crystallized particles annealed at 523 K. All the Mn…
The effect of annealing on microstructure, crystal structure, martensitic transformation temperature, and magnetization of the as-prepared and annealed Ni-Mn-Ga alloy has been investigated. The present study infers that annealing stabilizes the microstructure and reduces the range of martensitic transformation tempera…
Self-consistent ab initio calculations, based on the density functional theory (DFT) and using the full potential linear augmented plane wave (FLAPW) method, are performed to investigate both electronic and magnetic properties of the MnS layers. Polarized spin and spin—orbit coupling are included in the calculations w…
The effect of FeOx on the activity and selectivity in the cinnamaldehyde hydrogenation over Ir/SiO2 catalyst was studied. FeOx/SiO2, Ir/FeOx/SiO2 and Ir/SiO2 catalysts were prepared by impregnation. Fe and Ir content by weight% was 5%Fe and 1%Ir respectively. Samples were calcined at 673 K and reduced in H2 at 573 K.…
Timber is the oldest construction materials in the world, have been widely used in structures in addition to having a high longevity, if treated properly (maintenance). If this does not occur, the wood deteriorates due to the action of insects, fungi and other aggressive agents. There are several materials and techniq…
Rice husk powder (RHP) is an abundant agricultural by product that is produced in bulk quantity as part of rice milling. This research is carried out to incorporate RHP with natural rubber latex (NRL) compound. Different loading of RHP is added to NRL compound and is foamed to make natural rubber latex foam (NRLF) usi…
Self organization of the kinesin-microtubule system was implemented as a novel template to create percolated nanofiber networks. Asters of microtubule seeds were immobilized on glass surfaces and their growth was recorded over time. The individual aster islands became interconnected as microtubules grew and overlapped…
Application of robotic instruments in minimally invasive surgery (MIS) has been developing in recent years. The urge to implement biocompatible and less invasive devices found way in use of materials like shape memory alloys. However such designs presented the idea of using heat control actuation in the MIS surgery an…
Diamond semiconductor is an attractive material for next-generation power devices due to its wide band-gap, high breakdown field, and high thermal conductivity. By selective n+-type diamond growth, diamond junction field effect transistors (JFETs) were fabricated and operated from 223 to 573 K. JFETs show very low lea…
In this work, a Monte Carlo simulation method is applied to study the phonon transport in nanoscale Si devices, and the impact of quasi-ballistic transport on the heat conduction properties in FinFETs is investigated. It is shown that the conventional method based on Fourier law significantly overestimates the heat fl…
Activated carbons (ACs) for electric double layer capacitors (EDLCs) were fabricated from waste tea leaves, activated with the pore-forming substances ZnCl 2 then, carbonized at high-temperature in N 2 atmosphere. The surface texture and porosity of the ACs were determined using transmission electron micros-copy and N…
Abstract Summary: Different composition polyurethane‐siloxane thermoset copolymers obtained from isophorone diisocyanate trimer, poly (caprolactone) triol and hydroxy terminated poly(dimethyl siloxane) were casted over aluminium surfaces. Dynamic mechanical thermal analysis (DMTA) measurements showed that the copolyme…
This paper presents a system design of sustainable thermoelectric power generator based on solar concentrator and latent heat storage as a passive heating and cooling sources. The advantage of using thermoelectric cells is the ability to operate at high temperature (~150°C) environment with no moving parts which make…
The curve fitting of magnetizing characteristics of self excited induction generators (SEIG) resulting airgap voltage (Vg) with magnetising current (Im) is crucial for performance analysis of such machines using design tools. The magnetisation characteristic may be obtained using the B − H curve of the core material.…
We measured the thermopower of LaFe11.6Si1.4 and its hydride LaFe11.6Si1.4Hy to investigate changes in the electronic structure induced by hydriding. Using a model based on a density-of-states (DOS) function we can accurately describe a non-linear temperature dependence of the thermopower over a wide temperature range…
The assessment of Ricinus communis as corrosion inhibitor for aluminium alloy in 2M HCl and H3PO4 acid solution using gravimetric and potentiodynamic polarization techniques was investigated at 298K. The results revealed that Ricinus communis oil in 2M HCl and H3PO4-aluminium environment decreased the corrosion rate a…
Low current discharges are of concern in the context of predicting the lifetime of outdoor polymeric insulators. The nature of ac surface discharges changes markedly between peak currents of 0.5 mA and 10 mA: the electrical characteristics typically changing from unstable to stable behavior when the peak current incre…
ABSTRACT One of the important aspects in the development of new tire compounds is the correlation between the dynamic mechanical properties of the rubber, measured on a laboratory scale, and the actual tire performance. The measuring protocol for dynamic mechanical properties with high precision and good correlation w…