Materials Literature
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The aim of this study is to examine the effect of silicon in DLC-Si films on friction properties, and to clarify the mechanism of low friction under dry sliding conditions. The friction coefficient of DLC-Si films was measured using a ball-on-disk type tester at a load of 10N and a sliding velocity of 0.2m/s with no l…
The structures and thermodynamic properties of methyl derivatives of ammonia-borane (BH3NH3, AB) have been studied with the frameworks of density functional theory and second-order Møller-Plesset perturbation theory. It is found that, with respect to pure, methyl ammonia-boranes show higher complexation energies and l…
The performance of a cathode-supported solid oxide fuel cell (SOFC) was improved by using a microtubular (LSM) support. The cell had a laminated structure, with a bilayer of dense gadolinium-doped ceria (GDC) layer and scandia-stabilized zirconia as the electrolyte and a NiO-GDC layer as the anode on the microtubular…
The colouring hot dip galvanisation is a new hot galvanising processing. In this processing, a colour oxide film would be developed directly on the coating of the galvanised steel by the preferential oxidation of the additions in the hot dip galvanisation coating after hot dip operation. Due to their oxygen potentials…
The wear resistance of cast and strained high-speed steels are evaluated and compared, and the regularities of variations in their structure and properties depending on the austenitizing temperature are described. The impact of modification on the wear resistance of tungsten-molybdenum high-speed steels has been studi…
1D Co/CoFe(2)O(4) composites with tunable morphologies were fabricated by a facile solvothermal route in the presence of a surfactant poly(vinylpyrrolidone) (PVP); they may be very attractive for potential applications because of their outstanding soft magnetism.
We recover locally in time two (smooth) unknown convolution kernels, depending on time only, in a phase-field system coupling two hyperbolic integro-differential equations, where the differential operators (of order two and four in space, respectively) appear only under the integral sign. Moreover, we can prove a glob…
In order to clarify the effects of HCl concentrations on corrosion rates of commercial tubing in Waste-to-Energy (WTE) boilers, a corrosion test was made by altering the HCl concentration from 0 to 1000ppm, together with simulated flue gas composition. Three commercial tubing SA178A, SA213 T11 and NSSER-4 samples were…
The magnetic behaviour of the coordination polymer [Co(C3H3N2)2]n has been investigated by magnetization and specific heat measurements. Low-field magnetic susceptibility shows the presence of two maxima at approximately 8 and 4 K (Tf), which reflect short-range low-dimensional antiferromagnetic behaviour and the exis…
Combination of an electrochemically bistable Ru polypyridyl complex (2) with the metal oxide semiconductor Sb:SnO2 formed the basis of an electrochromic hybrid material characterised by a hysteretic response to applied potential. The electrochemical bistability of the molecular component arises from redox-triggered li…
Recently, magnesium alloys have been considered as a promising alternative for high-strength steel and aluminum in some applications because of its advantages such as low density, high specific strength etc. However, the application of formed magnesium wrought alloys components is restricted due to lack of knowledge f…
Boehmite nanofibers of high quality were synthesized through a wet‐gel conversion process without the use of a surfactant. The long nanofibers of boehmite with clear‐cut edges were obtained by steaming the wet‐gel precipitate at 170 ∘ C for 2 days. Analytical techniques such as X‐ray diffraction (XRD), scanning electr…
A novel diazirine functionalised aniline derivative, 3-(3-aminophenyl)-3-methyldiazirine 1, was prepared and employed as an AB(2)-type monomer in the synthesis of hyperbranched polymers; thus providing the first instance in which polyamines have been prepared via carbene insertion polymerisation. Photolysis of the mon…
Alkaline anisotropic etching with potassium hydroxide (KOH) and the additive 2-propanol (IPA) is a widely used step to texture monocrystalline silicon wafers industrially in order to reduce their reflection. Using IPA as an additive to KOH (aq) a texturing time of at least 20 min is required in order to remove the saw…
Two-component silicone encapsulation materials show a higher transmission in the short wavelength region compared to EVA (ethylene vinyl acetate) encapsulation material. This property leads to an enhanced blue response of the encapsulated solar cells and therefore an increase in Jsc (short circuit current density) is…
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Abstract An investigation into styrene‐butadiene rubber and styrene‐butadiene rubber/butadiene rubber composites was conducted, aimed at investigating the influence of surface modification of silica on polymer‐filler interactions. Two silanes, bis ‐triethoxysilylpropyltetrasulfane and octadecyltriethoxysilane, were us…
Dendrimers or other hyperbranched polymers are a new class of artificial polymers with unique properties, such as high degree of branching units, high density of surface functional groups, nano-scaled size, well-defined molecular weight and low-dispersity. These features make them attractive materials in the field of…
Statistical analysis of radionuclide specific activities in Ignalina NPP technological media and radioactive waste was performed, and the corresponding scaling factors were calculated. The results indicate that radionuclide scaling factors are directly influenced by the radionuclide generation and migration processes…
Molecular Crystals and Liquid Crystals Publication details, including instructions for authors and subscription information: http://www.informaworld.com/smpp/title~content=t713644168 Effects of Dielectric Relaxation on the Dynamics and Dielectric Heating of Nematic Liquid Crystals Sergij V. Shiyanovskii a; Andrii B. G…