Materials Literature
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Abstract It was found that the corrosion rate of steel in the sea mud with sulfate‐reducing bacteria (SRB) could be as high as 10 times of that in the sea mud without SRB. And the hydrogen permeation reaction would occur when metals were corroded. So it is necessary to investigate the effect of living SRB on hydrogen…
Partial discharge characteristics in air under a low vacuum region were studied to develop a diagnosis technique to determine the gas pressure in a vacuum interrupter. The pressures were set at from 1.3 Pa to 2.6 kPa in order to simulate the leakage of gas into the vacuum interrupter. The structure of the vacuum inter…
We report a simplified single emulsion (oil-in-water) solvent evaporation protocol to synthesize surface functionalized biocompatible magnetic nanospheres by using highly concentrated hydrophobic magnetite (gel) and a mixture of poly(D,L lactide-co-glycolide) (PLGA) and poly(lactic acid-block-polyethylene glycol-malei…
Cobalt ferrite CoFe2O4crystalline nanoparticles (50-100 nm) were produced by carbon combustion synthesis of oxides (CCSO). In this combustion synthesis process, the exothermic oxidation of carbon generates a thermal reaction wave that propagates through the solid reactants mixture of CoO and Fe2O3converting it to coba…
The present experimental work is aimed at studying the effect of different loading rates on the mechanical behavior of jute/glass reinforced epoxy hybrid composites. Surface modification was done in order to get better interfacial bonding between jute and resin. The hybrid composite showed insensitive behavior at high…
Compositions near the morphotropic phase boundary (MPB) of the BiScO 3 –Pb(Mg 1/3 Nb 2/3 )O 3 –PbTiO 3 ternary system showed high‐temperature relaxor properties (1 kHz) of T max ∼250°C and a permittivity maximum of ∼16 000. Transmission electron microscopy (TEM) was used to investigate the nature of the microstructure…
We describe the solubilization/dispersion of as-produced and purified single-walled carbon nanotubes (raw-SWNTs and p-SWNTs) with protoporphyrin IX derivatives and tetraphenylporphyrin iron(III) chloride, the spectral behavior of the octaalkylporphyrins-solubilized shortened-SWNTs (s-SWNTs), and the electrochemistry o…
A dual-cathode arc plasma source was combined with a computer-controlled bias amplifier to synchronize substrate bias with the pulsed production of plasma. In this way, bias can be applied in a material-selective way. The principle has been applied to the synthesis of metal-doped diamondlike carbon films, where the bi…
The Ba0.5Sr0.5Co0.2Fe0.8O3 (BSCF) cathode material was synthesized and evaluated for cathode in low temperature solid oxide fuel cells (LTSOFCs). Using Ni as anode, Sm0.2Ce0.8O2(SDC)-carbonate composites as electrolyte and the BSCF as cathode to construct the fuel cell (LTSOFC), maximum power output of 860 mW/cm2 has…
Sympathetic inrush current phenomenon occurs when a transformer is switched on in a power system network containing other transformers which are already energized. In this paper, the phenomenon of sympathetic inrush current is investigated using nonlinear-transient field-circuit coupled finite element formulation. The…
With the development of power electronic techniques, pulse-width modulated (PWM) inverters are widely used to control electrical machines, to feed transformers and to interface renewable energy systems. There are abundant high frequency harmonics in the output voltage of a PWM inverter, which increase the iron loss an…
Four homologous series of orthoconic (45 degree tilt) antiferroelectric liquid crystals, containing either a terphenyl or fluorosubstituted terphenyl core as mesogenic unit, have been synthesized and their mesomorphic behaviour investigated by the DSC and polarized light microscopy were discussed. X-ray diffraction st…
An in situ solid state grafting reaction between epoxidized natural rubber (ENR) and silica was performed in a Haake internal mixer. Resulting ENR‐grafted silica was characterized by Fourier transform infrared spectroscopy (FTIR) and thermogravimetric analysis (TGA) measurements. Based on these results, it was conclud…
In this letter we extend previously established results for nested carbon nanocones to both nested boron nitride and carbon-boron nitride nanocones. Based purely on mechanical principles and classical mathematical modelling techniques, we determine the energetically favourable structures for nested boron nitride and c…
An experimental study has been conducted to evaluate the formation of nano α‐Al 2 O 3 under various conditions, such as different calcining temperatures and emulsion ratios of aqueous aluminum nitrate solutions and oleic acid with a high‐speed stirring mixer. Four batches of the precursor powders were calcined at thre…
Syntheses of LDH (layered double hydroxides) substituted with Fe3+and Ni2+were attempted by a co-precipitation method and their products were characterized by X-ray diffraction (XRD), Fourier transform infrared (FT-IR), and X-ray absorption fine structure (XAFS). XRD and FT-IR results indicated that obtained products…
We synthesized micrometer-sized three-dimensional superlattices consisting of gold (Au) nanocrystals modified with three types of water-soluble thiolates in different dimensions: mercaptosuccinic acid (MSA), N-(2-mercaptopropionyl)-glysine (MPG), and glutathione in its reduced form (GTR). The nanoparticles were assemb…
The objective of the investigation was to study the application of ultrasound reactor technology (USRT) as a disinfectant for reduction of fungi from sewage effluent. Fungi are carbon heterotrophs that require preformed organic compounds as carbon sources. USRT is an attractive means to improve water quality because o…
We studied the electrical properties of a carbon nanotube (CNT) via interconnect fabricated by a novel damascene process which is mostly compatible with conventional Cu interconnects. It was found that the resistance of 60-nm-height vias was independent of temperatures as high as 423 K, which suggests that the carrier…
Systematic investigation of large amplitude ac excitation effects on the polarization–electric-field (P-E) and strain–electric-field (ε-E) characteristics of both “hard” and “soft” Pb(Zr,Ti)O3 ceramics was performed. Upon ac excitation, a gradual disappearance of the shift on P-E response along the E axis (Eint) was o…