Materials Literature
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The effects of chromium addition on the corrosion resistance of low alloy steels containing copper in FGD systems, were examined by electrochemical techniques in a sulphuric acid solution containing HCl. All measurements (potentiodynamic polarization test and EIS) reveal an increase in corrosion rate with Cr content,…
Fabrication of four blend samples of diglycidyl ether of bisphenol-A (DGEBA) epoxy resin cured by physical mixing with Aradur®-3282 polyamidoamine adducts (Aradur®-PA3282) as a curing agent at ambient temperature has been reported. The thermal degradation, mechanical properties and corrosion behavior of these fabricat…
The adsorption of hydrogen molecules on titanium-decorated (Ti-decorated) single-layer and bilayer graphenes is studied using density functional theory (DFT) with the relativistic effect. Both the local density approximation (LDA) and the generalized gradient approximation (GGA) are used for obtaining the region of th…
Nanoindentation tests were performed on nanostructured transparent magnesium aluminate (MgAl2O4) ceramics to determine their mechanical properties. These tests were carried out on samples at different applied loads ranging from 300 to 9,000 μN. The elastic recovery for nanostructured transparent MgAl2O4 ceramics at di…
Abstract We have developed a novel super‐fast response (SFR) TFT‐LCD with an ultra‐wide temperature range. Both the turn‐on and turn‐off switching are forcibly controlled by applying an electric field. Response times of the SFR TFT‐LCD are over several times faster than those of conventional LCDs like MVA or IPS LCDs.
The optical conductivity of graphene and bilayer graphene in quantizing magnetic fields is studied. Both dynamical conductivities, longitudinal and Hall’s, are analytically evaluated. The conductivity peaks are explained in terms of electron transitions. Correspondences between the transition frequencies and the magne…
The dispersibility of unfunctionalized multi-walled carbon nanotubes in a polymer matrix is studied focusing on the role of the morphology and structure of the primary aggregates. The particles, synthesized by fluidized bed catalytic chemical vapor deposition and purified through a scalable one-pot method, are dispers…
This paper describes a comparative study on the modeling of a thin conductive dielectric layer usually found on polluted or ice-covered insulators. Two different approaches such as those offered by most FEM commercial software were studied. The first one is a volume approach which takes into account the thickness of t…
1 Bioconjugates based on semiconductor quantum dots and porphyrin ligands: properties, exciton relaxation pathways and singlet oxygen generation efficiency for PDT applications E.I. Zenkevich, S.V. Gaponenko, E.I. Sagun, and C. von Borczyskowski 1 National Technical University of Belarus, Nezavisimosti Ave., 65, 22001…
One of the methods used to inspect and assist nonceramic insulator surface hydrophobicity is the STRI hydrophobicity classification guide, which is currently manually employed in the field. In this paper, a system for the automation of the STRI hydrophobicity classification system has been developed. The proposed syst…
Abstract This paper presents the experimental study of a Thermoplastic Polyurethane (TPU) based Shape Memory Polymer (SMP) produced from granulates of commercially available Estane TM ETE75DT3 NAT022 (Oevel Westerlo, Belgium). This polymer is characterized by Differential Scanning Calorimetry (DSC) and Dynamic Mechani…
The properties of relaxor ceramics in the compositional series (1− x ) K 0.5 Bi 0.5 TiO 3 – x Ba ( Ti 0.8 Zr 0.2 ) O 3 have been investigated. Values of T m , the temperature of maximum relative permittivity, decreased from 380°C at x = 0.0 to below room temperature for x > 0.7. Compositions x = 0.1 and 0.2 were pi…
A heterocyclic Schiff base of N-(2-chlorobenzylidene)-4-acetylaniline (CBAA) was tested for its corrosion inhibition towards of St3S carbon steel in acidic chloride solutions using weight loss, Tafel polarization techniques, scanning electron microscopy, and quantum chemical calculations method. An inhibitory effect o…
Electrospinning is employed to fabricate Sm0.5Sr0.5CoO3-δ (SSC) nanofibers. One-dimensional nanofiber-based Sm0.5Sr0.5CoO3-δ-Gd0.2Ce0.8O1.9 (SSC-GDC) composite cathodes for solid oxide fuel cell (SOFC) are fabricated by infiltrating the GDC precursor solution into the SSC nanofibers scaffolds. Optimal polarization res…
The combustion characteristics of styrene—butadiene—styrene (SBS) asphalt are studied by thermogravimetric analysis (TG/DTG) at four different heating rates. According to the saturates/aromatics/resins/asphaltenes (SARA) fractionation method, the combustion process of SBS asphalt can be divided by Gaussian peak fittin…
Results revealed the typical cellulosic cell wall structures, indicating that the reduced modulus values (Er) for the cellulosic cells and the amorphous matrix phases were of 6.2 GPa and 4 GPa, respectively, for the apricot shell. The single phases of the rest of structures were tested, showing differences in modulus…
A one-pot synthesis method has been developed for preparation of silver nanoparticles in aqueous poly (vinyl pyrrolidone) (PVP) solution by synchrotron X-ray radiation. The hydrated electrons (eaq - ) and hydrogen atom radical (H·), products of radiolysis of water molecules by synchrotron X-rays brings about the reduc…
Diesel engine technologies have gone through significant progresses in the past decade. Though the tailpipe NOxand particulate matter emissions have been reduced to a large extent by the applications of after-treatment systems such as selective catalytic reduction (SCR) systems and Diesel particulate filters, engine f…
Space charge formation is a well known phenomenon that affects the overall dielectric properties of insulation systems. Space charge occurs when the rate of charge accumulation is different from the rate of removal and involves moving and trapped charges, which modify the electric field distribution within the materia…
Aluminum nitride (AlN) polycrystals were prepared by pulse plasma sintering (PPS) technique. The starting AlN powder mixtures were composed with 3.0 wt%, 5.0 wt% and 10 wt% of yttrium oxide (Y 2 O 3 ), respectively. Relative density of each polycrystal was measured by hydrostatic method and evaluated higher than 97%.…