Materials Literature
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Evaluation of cavitation erosion resistance of is carried out by using various testing stands, that differ by the way of cavitation excitation and its intensity. These various testing conditions have led to a standardization of some part of laboratory stands, that in turn allows a direct comparison of results obtained…
Magnesia-spinel composites were prepared by sintering at 1800°C in N2 with fused magnesia, sintered magnesia, MgO-Al2O3 spinel as raw materials and Al powder as additive. The compositions and microstructure of sintered products were investigated by XRD and SEM. The results show that a little AlN and MgAlON has been de…
Daan Hein Alsem, Siddharth Sood, Norman Salmon, Tevis D B Jacobs; In situelectrical testing of device-relevant nanocontacts in the transmission electron mi
P Hovington, V Timoshevskii, S Burgess, P Statham, H Demers, R Gauvin, K Zaghib; Towards Li Quantification at High Spatial Resolution Using EDS, Microscopy
Roozbeh Nikkhah-Moshaie, Ajeet Kaushik, Rahul D Jayant, Vinay Bhardwaj, Madhavan Nair; TEM Investigation of Nanocarriers Distribution in Mice Brain, Micros
A series of porphyrins with directly meso-attached “sucrose” moiety by the carbon C-6′ of its “fructose” end was synthesized, and their physico-chemical and aggregation properties studied by spectroscopic (fluorescence, circular dichroism, resonance light scattering) techniques. The effect of selected porphyrins on tu…
A comparative study of the space charge behavior in XLPE and EPR in the presence of thermal gradient was conducted. For power cable under load conditions, a temperature gradient is established across the cable insulation. Due to the resistive grading under high voltage direct current, such thermal gradient will result…
In this work, the boriding of binary (Ni-Ti) and ternary (Ni-Ti-Cu) shape memory alloys was carried out in a solid medium at 1173 K for 8 h using the powder pack method with Ekabor-Ni powders. Characterization of boride layer formed on the surface of alloys was identified by optical microscopy and scanning electron mi…
The non-uniform distribution of contamination on insulator surface has appreciable effects on flashover voltage, and corresponding researches are valuable for the better selection of outdoor insulation. In this paper, two typical types of porcelain and glass insulators which are widely used in ac lines were taken as t…
The interactions of two-phase alloy Ti 2 Fe with hydrogen and ammonia at 100–500°C were studied, the compositions of the products were found, and the conditions for producing hydride and nitride phases were determined. The potential of using the two-phase alloy in a metal hydride hydrogen accumulator operating at 20–6…
Abstract We simulated metal–insulator–metal (MIM) nanoresonator structures that can be realized by sandwiching an insulator layer between two metal grating layers with subwavelength periods and heights. Simulation results indicate that it is possible to use relatively low refractive index polymeric materials as the in…
Emission spectra of Sn, Sb, Pb and Bi doped silica glasses co-doped with Al and P prepared by modified chemical vapor-phase deposition (MCVD) using solution doping technique are presented. Bi doped silica glasses present emission/excitation (Em/Ex) bands around 470/(330, 220nm) 600/(470, 350, 270nm), 730 and 830/(820,…
Peng Gao, Akihito Kumamoto, Ryo Ishikawa, Nathan Lugg, Naoya Shibata, Yuichi Ikuhara; Misalignment Induced Artifacts in Quantitative Annular Bright-Field I
Sunghyon Kim, Byong Chon Park, Il-seok Oh, Jin Seung Kim; Image Sharpness Measurement in Scanning Electron Microscopy Based On Derivative Method In ISO/TS
In this work, the absorption coefficients for secondary electron emißsion, α and β, that appeared respectively in the two different formulas, $$\delta (E_p ) = k\int_0^\infty {\left( {\frac{{dE}} {{dz}}} \right)E_p \exp ( - \alpha z)dz} $$ and $$\delta (E_p ) = k\int_0^\infty {\left( {\frac{{dE}} {{dz}}} \right)E_p \e…
Hexagonal boron nitride films are synthesized by plasma enhanced chemical vapor deposition (PECVD) from a gas mixture of borazine and ammonia or helium on Si(100) substrates. X-ray photoelectron spectroscopy is used to study changes in the electronic structure and chemical composition of the films depending on the com…
Iron magnetic circuit residual magnetization may contribute as much as several Gs to the magnetic field in charged-particle accelerators. This contribution depends on the magnetization “history.” It is not taken into account in most of the existing software that uses the main magnetization curve. Therefore, an error i…
We present a new scheme of a moderate-resolution spectrograph based on a cascade of serial holographic gratings each of which produces an individual spectrum with a resolution of about 6000 and a bandwidth of 80 nm. The gratings ensure centering of each part of the spectrum they produce so as to provide uniform covera…
A computational fluid dynamic method is developed to predict the pressure losses within the newly developed foam SiC ceramic structured packing. The present work simulates the flow pattern in a macrostructure model and the typical REU mechanisms. Vertical pulse structure districts are added in one corrugated packing t…
In hot rolling, the thermal cyclic of work rolls causes a superficial oxide scale, which plays an important role on the contact friction and wear. The asperities of oxidised strip surface and wear debris slide over the High Speed Steel (HSS) work roll surface which comprises of hard carbides within an iron matrix unde…