Materials Literature
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The increasing need for flexible electricity generation means that most components must perform under cyclic operating conditions. The multiplicity of generating options also means that defining a ‘typical’ cycle is difficult. Thus, in addition to the traditional hot and cold starts and stops, there are requirements f…
In recent years, increasing attention has focused on the residual-stress distribution in welded pipe, since residual stress is often responsible for the failure of welded pipe in industrial equipment. Residual stress σres appears in each step of welded-pipe manufacture, which relies on cold plastic shaping. Accordingl…
Arc plasma from Ti3SiC2compound cathodes used in a filtered dc arc system has been characterized with respect to plasma chemistry and charge-state resolved ion energies. In vacuum, the plasma composition is dominated by Ti ions, with concentrations of 84.3, 9.3, and 6.4 at% for Ti, Si, and C ions, respectively. The re…
In low-temperature SCR, corn straws pyrolysis carbon (CS) was prepared as a catalyst support and activated carbon (AC) was a comparison. Manganese (7 wt.%) was loaded respectively on this two supports (Mn/AC and Mn/CS). In 50°C~300°C SCR experiment, the highest NO conversion by using CS is 36.6 Vol.% at 300°C, while A…
Catalysts of Mn/TiO2 and Mn-Ce /TiO2 prepared by co-precipitation method for low temperature selective catalytic reduction (SCR) of NO with NH3 were investigated in this study. The experimental results showed that co-precipitation method after improvement, the NO conversion of Mn-Ce/TiO2 catalyst increased sharply. Me…
Electroless Ni–P coatings with different phosphorus contents have been developed to deposit on phenolic plastic in plating bath with different pH values. The effects of pH value on the phosphorus content and the microstructure were investigated by scanning electron microscopy (SEM), energy dispersive X-ray spectroscop…
The elastic hysteresis and residual deflection of the aluminum D16 alloy samples corresponding to the model of a circular plate clamped along its perimeter have been studied at low (the beginning of the Hooke region) mechanical stresses. It has been shown that these characteristics depend substantially (change several…
The reaction of nitrobenzene hydroalkylation with methanol forming N -methylaniline as the main product has been studied. Alumina modified with copper and chromium compounds deposited by incipient wetness impregnation has been examined as the catalyst. It has been shown that the reductive alkylation of nitrobenzene wi…
High-resolution X-ray diractometer was used to study structural quality, lattice parameters and mist strain in p-ZnTe/n-CdTe heterojunctions grown by the molecular-beam epitaxy technique on two dierent (001)-oriented substrates of GaAs and CdTe. The X-ray diractometer results indicate that the CdTe layers, grown on la…
Nowadays, one obtains information about deformation and fracture strength at strain rates greater than 10 4 s −1 by analyzing the evolution of plane shock waves in the materials under study. This paper presents a short survey of methods for analyzing shock wave phenomena in relaxing media and recent observations of th…
A simple ball-drop impact tester is developed for studying the dynamic response of hierarchical, complex, small-sized systems and materials. The developed algorithm and set-up have provisions for applying programmable potential difference along the height of a test specimen during an impact loading; this enables us to…
Dynamic mechanical properties and microstructures of pure iron and Fe-30Mn-3Si-4Al TWIP (TWinning Induced Plasticity) steel were conducted by SHPB (Split-Hopkinson Pressure Bar), OM (Optical Microscopy) and TEM (Transmission Electron Microscope), at the strain rate ranging from 102 to 105 s-1 and at room temperature.…
Metal exchange reaction of magnesium(II) octa(4-bromophenyl)tetraazaporphyrinate with copper and cobalt chlorides in dimethylformamide has been studied by spectrophotometry measurements. Kinetic parameters of the metal exchange reaction have been determined. Possible stoichiometric mechanism of the reaction was propos…
The properties of styrylquinoline-merocyanine dyads, in which the styrylquinoline (SQ) and merocyanine (MC) moieties are linked with a bridge of three (SQ3MC dyad) and eleven (SQ11MC dyad) methylene groups, have been compared with the properties of the model compounds 2-(4-methoxystyryl)quinoline and 1-ethyl-2-(4-meth…
Y. Ikuhara and co-workers examine in article 1400143 the growth mechanism of an epitaxial LiMn2O4 thin film on gold, revealing structural and compositional variations near the film/substrate interface. Scanning transmission electron microscopy and related techniques with sub-atomic resolution reveal an atomically flat…
This research is the main part of a detailed study concerning the preparation of cable insulation having improved mechanical, thermal and structural performances. The paper presents the various PA6-based blends with some differently structured elastomers belonging to the polymer class of ethylene-propylene diene rubbe…
Graphene quantum dots (GQDs) are fabricated with minimal oxidation by S. Yoo, Y.-H. Cho, S. Jeon, and co-workers using a graphite intercalation compound method. On page 1016, the GQDs are shown to emit blue light, and these can be incorporated into polymeric host layers as the active layer in a highly effective blue L…
The present work aims to prepare citrate-reduced silver particles (AgNPs) coated with poly(vinyl pyrrolidone) (PVP) and modified polyethylene thiol monomethylether. Modified AgNPs derivatives were exposed to synthetic human stomach fluid (SSF) (pH 1.5) and changes in size, shape, hydrodynamic diameter and chemical com…
Modification of the spectral response of a periodically coupled metallic nanostructure is reported. A thin SU‐8 dielectric cavity was fabricated on a nanopatterned gold film. Additional resonance peaks are observed in the transmitted spectrum due to the interaction between excited surface plasmon polaritons (SPPs) and…
This paper deals with an adaptive hysteresis controller for the Switched Reluctance Machine (SRM). The classical hysteresis controller provides a high bandwidth, good robustness but it's characterized by a variable switching frequency. This latter causes the injection of high frequency harmonics into the system that c…