Materials Literature
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Abstract The sodium-magnesium hydrated double salt konyaite, Na 2 Mg(SO 4 ) 2 ·5H 2 O, has been studied by single-crystal X-ray diffraction and thermogravimetry on synthetic samples and by quantitative X-ray diffraction utilizing the Rietveld method on natural samples from the Mount Keith mine, Western Australia. Kony…
Abstract Hollow spheres have attracted considerable attention because of their promising applications in the field of nanoscale chemical reactors, catalysts, drug‐delivery carriers, and photonic building blocks. Up to date, numerous approaches have been developed to synthesize hollow spheres, which can be classified a…
During their operating service, insulated power cables can be exposed to wet environment. The presence of moisture in cables surroundings may affect the properties of the used insulation material for instance, XLPE widely employed in MV and HV power cables insulation and therefore the reliability of the insulated cabl…
Long term prevention of smooth muscle cell migration and proliferation inside the lumen of coronary arteries after stent implantation remains a challenge in medicine. Vascular stents have been coated with anti-proliferative drugs such as paclitaxel and rapamycin to improve the stents' efficacy. Maintaining adequate dr…
When measured scanning electron microscope (SEM) image contours are used to generate or verify optical proximity correction (OPC) models, it is important that the contours are correctly aligned. If this is not the case, alignment errors will negatively impact the OPC model quality or its verification result. We presen…
The fire-resistant properties of polymer nanocomposites based on polyvinylchloride and nanoparticles of metal compounds were studied. The investigation of nanoparticles and the determination of their sizes were carried out using scanning electron microscopy (SEM). The size of the nanoparticles of magnesium hydroxide w…
The effect of neutron irradiation on the formation of defect/solute clusters in binary iron alloys is important for the understanding of the damage mechanisms in structural materials applied in the field of nuclear technology. The irradiation behaviour of four binary Fe-Cr alloys of commercial purity with chromium con…
The resistance to partial discharges of pure, microfilled and nanofilled Polyetherimide varnish for low voltage motors fed by inverters is presented. Micro and nano-sized Silica particles (1.5 % wt) are used as fillers. Experimental results of lifetime versus temperature (-55 to 180°C), frequency (5 to 15 kHz) and lev…
Transmission and distribution transformers are a critical part of the electricity generation and distribution network. The potential consequence of transformer failure can cause operation disruption and financial losses. In recent years, magnetic nanoparticles have been used to enhance the dielectric breakdown strengt…
This paper presents a novel non-destructive method to measure the actual corrosion rate of precorroded metal objects, such as historical and archaeological artefacts. The corrosion rate is estimated from the oxygen consumption of the objects, which is measured in a small volume of air encapsulated directly on the surf…
Abstract Profiles of the magnesium alloy AZ31 were produced by conventional indirect extrusion and by indirect extrusion into counterpressure with variations of the billet temperature T B from 200 °C up to 350 °C. Microstructural examination by optical microscopy showed that for extrusion trials carried out with bille…
This research explains the dielectric characteristics of new nanocomposite insulation materials by Interphase Power Law IPL. This model takes into account interactions between the components of the composite system in the form of interphase regions. The resultant model, termed IPL model, relies on the permittivity of…
The aim of this study was to investigate the effect of electrospinning process on the physical properties of fibers made from shellac. Electrospun shellac fiber was prepared by dissolving shellac in ethanol and then transferred to the electrospinning system. The influences of process parameters; including electric fie…
The second part of this review treats the phase diagram of boron, because of the importance of the material research. A comparison of the phase stabilities of related crystals has been made and deducing general trends among them has been attempted, from which the reader could get useful insights for future development…
Abstract The present work was undertaken to provide information, lacking in the literature, on the lattice rotation, and the role of twinning during cold rolling of commercial purity titanium (T40). The proposed method consists of determining the individual rotation of the grains induced by low to intermediate deforma…
Abstract We investigated the chemical doping of the single‐walled carbon nanotubes (SWCNTs) networks by a treatment with aromatic amines. Adsorption and intercalation of amine molecules in bundled SWCNTs leads to typical n‐type doping observed already for alkali metals. The electron donation to SWCNTs is demonstrated…
Cellular polypropylene polymer foams, also known as ferroelectrets, are compelling candidates for air-coupled ultrasonic transducer materials because of their excellent acoustic impedance match to air and because they have a piezoelectric d(33) coefficient superior to that of PVDF. This study investigates the performa…
The shock response of the aluminum alloy 6061, and its variation according to heat treatment have been monitored via the placement of stress gauges in such orientations so as to be sensitive to the lateral component of stress, and hence the shear strength. To complement these measurements, the postshock microstructure…
The effect of doping by boron on optical properties of multilayers containing Si-NCs were studied by means of photoluminescence (PL), time-resolved PL, photoluminescence excitation (PLE), transmission and reflection measurements. It was found that PL decay is strongly non-single exponential and can be described by mea…
Three wrought iron ingots immersed during 2000 years at 12 m deep in Mediterranean Sea were stored after excavation for 2 years without specific protection in air. After that period, two of them were treated by immersion in a NaOH solution, while the third was used to describe the corrosion system resulting from the s…