Materials Literature
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The subsolidus region of the Ag2MoO4-CoMoO4-Al2(MoO4)3 ternary salt system was studied by X-ray powder diffraction analysis. New compounds Ag1−x Co1−x Al1 + x (MoO4)3 (0 ≤ x ≤ 0.4) and AgCo3Al(MoO4)5 were detected to form. The variable-composition phase Ag1−x Co1−x Al1 + x (MoO4)3 is of the NASICON structure type (spa…
A micro hydromechanical deep drawing is carried out using the pure titanium and the effect of fluid pressure on formability of pure titanium is investigated. The experiments are performed using the two kinds of pure titanium foils (TR270C-H and TR270C-O) and stainless steel foil (SUS304-H) with 50 thickness and the cy…
High frequency characterisation of platinum and tungsten contacts on individual multi-walled carbon nanotubes (MWNT) is performed from 10 MHz to 50 GHz. By measuring the scattering parameters of aligned individual MWNTs, we show that metal contacts enhance an inductive response due to the improved MWNT-electrode coupl…
This article presents the effect of different torque ripple reduction methods on the average torque and back-emf harmonics. Two methods are compared. One is skewing the stator of the machine and the other method is using a fractional slot winding for the machine. It has been shown that both methods reduce the torque r…
Novel catalytic surfaces can be prepared by in situ synthesis of metal nanoparticles (NPs) inside polymer brush systems. To gain more control over the properties of these nanocatalysts, it is important to quantify their distribution inside the polymer brush and understand their formation process better. Here, measurem…
With the increasing rate of depletion of natural raw materials for production of building materials, their sustainable usage is clearly an important topic for consideration. For instance, 1 tonne ordinary Portland cement (OPC) requires 1.7 tonnes of raw materials, 1.0 tonne of coal and 100 kWh of electricity. One tonn…
The damping properties and general performance of experimental 01Ю5T industrial steels are investigated. The damping, mechanical, technological, and other properties of these steels are well suited to industrial applications.
In this paper, the design of SPICE circuit model has been discussed for Carbon Nanotube Field Effect Transistor (CNTFET) and predict device high frequency performance. An enhancement mode SPICE circuit model for nanotube transistor has been developed. A new CNTFET circuit can be developed by using this SPICE model. It…
The low-temperature phonon-assisted relaxation rates of the excited states of bismuth donors in a silicon crystal uniaxially stressed in the [100] crystallographic direction are calculated. The states belonging to the lower (2Δ) and upper (4Δ) valleys of the silicon conduction band are considered. It is shown that the…
Conventional quantitative electron probe microanalysis of actinides requires the use of reference standard samples. However, for such elements, standards are generally not available. To overcome this difficulty, standardless methods of analysis are used, in which the x-ray intensity emitted by the standard is calculat…
This paper presents a composite right/left-handed (CRLH) slot line leaky-wave antenna (LWA) loaded with non-bianisotropic split ring resonators (NB-SRRs). Specifically, it is shown how the proposed topology overcomes the problem of far field cancelation due to the existence of antiparallel currents in fundamental mode…
In this study, we investigated the precipitation behavior of the R-phase precipitated at the initial stage of aging and its effects on the mechanical properties of 25%Cr-7%Ni-2%Mo-4%W super duplex stainless steel. The R-phase was mainly precipitated at the interface of ferrite/austenite phases and inside of the ferrit…
Wear is an important cause of the instability for a CNC machine tool servo drive system. And the backlash is one of the results of the feed-axis wear. Therefore, a novel kind of online feed-axis wear condition monitoring methods is proposed, which uses the backlash for estimating the status of the wear. Firstly, the o…
The paper presents the possibility of using polymeric materials in the automotive industry. Some of the requirements for materials have been discussed and the possibilities of a significant increase in strength of the materials by the use of reinforcements have been indicated. Numerous examples of applications of rein…
We report on an experimental study of an ion source based on a Penning discharge with a cold hollow cathode in crossed electric and magnetic fields. The minimum vacuum chamber operating pressure was 3 × 10(-5) Torr for argon and 5 × 10(-5) Torr for hydrogen. The use of a hollow cathode allowed decreasing the discharge…
Energy storage systems (ESSs) play an important role in sinking and sourcing of power in an electric vehicle and ensuring operational safety. Ultracapacitors (UCs) are a recent addition to the types of energy storage unit that can be used in an electric vehicle as an ESS because of their high power density, fast charg…
The modification of graphite used in diamond synthesis with low concentrations of the fullerene C 60 -C 70 extract (from 0.045 to 0.225 wt % of graphite mass) in the presence of a Ni-Mn metal catalyst at a pressure of 5 GPa in the temperature range 1600–1800 K is found to decrease the activation energy of the graphite…
The dependence of the effective emission area on the electric field intensity and the interelectrode gap of the diode is investigated based on the experimental current-voltage characteristics of multiple-tip autoemission matrices made of glassy carbon. It is demonstrated that the effective emission area increases and…
Scanning tunneling microscopy is employed to characterise the structure and morphology of the (100) surface of the Ag-In-Gd 1/1 approximant. The surface prepared by the usual method of sputter-annealing produces stepterrace structure. Observed step heights are consistent with the lattice constant of the bulk. Scanning…
Low-temperature (<250 °C) plasma-enhanced atomic layer deposition (PEALD) is used to fabricate aluminum nitride (AlN)/gallium nitride (GaN) heterojunctions for tunnelling contacts in devices where selective contacts are required, such as GaN metal–oxide semiconductor field-effect transistors. AlN is grown on GaN templ…