Materials Literature
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The high-pressure phase β -ZrB 2 O 5 represents the first ternary borate in the system Zr-B-O. The compound was synthesized under high-pressure / high-temperature conditions of 7.5 GPa and 1100 °C in a Walker-type multianvil apparatus. The crystal structure was determined on the basis of single crystal X-ray diffracti…
Short circuit forces may be destructive in a power transformer. Therefore, accurate evaluation of such forces is essential during the design and manufacturing phase. Otherwise, overestimated values may result in oversized, and in general, non-optimal design. The analytical methods are usually fast and easy to apply. H…
Synthetic aspects of obtaining silver organosols in two-phase aqueous organic systems and the influence of process conditions on the polydispersity and aggregative stability of obtained silver nanoparticles are considered.
Charging phenomena of polymer films on silicon substrates under electron beam irradiation are studied by numerical simulation. The initial distribution of the charge deposited in the sample is calculated by a Monte Carlo simulation of electron scattering, and charge drift is simulated by taking into account the Poisso…
A novel series of compounds with different counter anions, i.e. 1‐{[4‐(4‐nitrophenylazo)phenyloxy]}alkyl‐3‐methyl‐1H‐imidazol‐3‐ium bromide salts (Cn , n = 3, 6, 10) and tetrafluoroborate salts (Dn , n = 3, 6, 10), were synthesised by the incorporation of an imidazolium group into paraffin side chain‐terminated 4‐nitr…
OH-functionalized single-walled carbon nanotubes (SWNTs), i.e. SWNT–OH, were prepared through the ball-milling of purified SWNTs with KOH. The composition of the pristine SWNTs bulk sample was characterized by resonance Raman scattering. The OH-functionalization-induced shrinking of the energy gap, the charge transfer…
Crosslinked polyethylene (XLPE) remains the material of choice for modern high voltage extruded cables possessing good thermal stability and excellent electrical properties. However, increasing pressure to limit the environmental effects of human activity and to promote recycling has forced researchers to look to new…
Recent increase of multi drug-resistant bacteria represents a crucial issue of public health. As novative approaches are required to face that problem, those emerging from nanotechnology are of great interest. In that context we propose the possibility to use gold nanoparticles combined with ionising radiation to dest…
The PArticle STress Analysis (PASTA) code was written to evaluate stresses in coated particle fuel embedded in graphite of high-temperature reactors (HTRs). Existing models for predicting stresses in coated particle fuels were extended with a treatment of stresses induced by dimensional change of the matrix graphite a…
Cold rolled Cu-24 wt% Ag composite was characterized and the effects of crystallographic structure and defect anisotropy and microstructure refinement on properties of the composite were studied. Characterization was carried out with high resolution scanning electron microscopy (SEM), x-ray diffractometer and mechanic…
Abstract Blends of semicrystalline linear low‐density polyethylene and amorphous polydimethyl siloxane rubber were prepared by varying the blend ratios from 100:0, 90:10, 80:20, 70:30, 60:40, 50:50, 40:60, 30:70 to 0:100 by melt‐blending technique in an internal mixer under previously optimized process conditions usin…
A high-frequency angled needle ultrasound transducer with an aperture size of 0.4 x 0.56 mm2 was fabricated using a lead zinc niobate-lead titanate (PZN- 7%PT) single crystal as the active piezoelectric material. The single crystal was bonded to a conductive silver particle matching layer and a conductive epoxy backin…
The temperature-dependent thermopower S(T) of Bi0.5−xLaxSr0.5MnO3 (0.1≤x≤0.4) (BLSMO) has been investigated in this study. The density of state at the Fermi level as a function of the La concentration is obtained via the equation for the diffusion thermopower (TEP) in the low-temperature regime. An equation that takes…
The carbonate containing layered double hydroxide (LDH) of Li with Al having the formula [LiAl 2 (OH) 6 ](CO 3 ) 0.5 ·1.5H 2 O crystallizes in the monoclinic system. The single layered cell belongs to the 1M polytype. However, the crystallites are extensively faulted. The structural disorder is on account of the incor…
In this work, six pure Ni specimen which mean grain sizes spans a broad range from ultra-fine to nanometer were fabricated by direct current electrodeposition and a coarse grain Ni was obtained by annealing. A gradual transition of the crystallographic preferred orientation of the deposited Ni from (200) texture to is…
In this paper we calculate the barocaloric and the magnetocaloric effects under applied pressure in the compound La(Fe0.89Si0.11)13. We use a microscopical model in the framework of the band theory of magnetism, where the Coulomb interaction between itinerant electrons is treated in the mean field approach. Our theore…
Abstract In this work, melt‐extruded guides for peripheral nerve repair were produced, based on blends between poly‐(ϵ‐caprolactone) and gelatin with a low gelatin amount (10 wt. %), with the aim of combining the good melt process ability of the synthetic polymer with the optimal biocompatibility of the natural polyme…
In this article, first published in 1998, it is demonstrated that martensite decomposition and precipitation of ultrafine carbides are important factors in improving the mechanical properties of high speed steels by deep cryogenic treatment (DCT) at 2 −196°C. Cryogenic processing has been found to double the service l…
We report measurements of birefringence, bend elastic constant, principal dielectric constants and conductivities as functions of temperature in the nematic phase of 4′-butyl-4-heptyl-bicyclohexyl-4-carbonitrile (CCN-47). The compound exhibits a small birefringence and a large negative dielectric anisotropy. Surprisin…
We developed a calorimetric technique to measure the isothermal magnetocaloric entropy change. The method consists in the use of Peltier cells as heat flow sensor and heat pump at the same time. In this paper, we describe the setup, the constitutive equations of the Peltier cell as sensor and actuator, and the calibra…