Materials Literature
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Incorporation of carbon nanotubes into nylon-6 creates interfacial phonons; phonon occupation at low frequency regime is therefore enhanced, leading to thermal conductivity improvement by 74-78%.
In this study, the white-light emissions, including red, green and blue colors, appearing on the same porous silicon samples are originally introduced by a thermal-annealing method. The SEM, FTIR, and PL are discussed for different annealing temperature cases. The FTIR is used to monitor the chemical bonding structure…
The interaction between nanoparticles of strontium-doped lanthanum manganite (LSM) and single-crystal yttria-stabilized zirconia (YSZ) was investigated using atomic force microscopy, X-ray photoelectron spectroscopy (XPS), and scanning electron microscopy (SEM)/energy-dispersive X-ray spectroscopy (EDX). Nanoparticles…
β-Tricalcium phosphate (β-TCP) particles reinforced bioresorbable plastics poly-L-lactide (PLLA) composites were prepared by injection molding. The nominal weight ratio of β-TCP was selected as 5, 10 and 15%. In order to clarify effects of the PLLA crystallinity on the mechanical properties, the specimens were heat tr…
The compounds Tb0.35Dy0.45Er0.2Fe2 − x Co x (0 ≤ x ≤ 2) are synthesized in both polycrystalline and single-crystal states. The composition of the new multicomponent alloys with compensated magnetic anisotropy is calculated in the framework of the single-ion magnetic anisotropy model with allowance for the data on the…
The preparation, characterisation and properties of new hybrid materials of the conducting polymers polypyrrole and polyaniline with cellulose substrates in the form of paper fibres, paper sheets and wood; merino wool fibres; and kaolinite particles are presented. The conducting polymers form as spheres of about 50-15…
Various pore sizes of anodic aluminum oxide (AAO) were fabricated using a two-step anodization process. AAO pores with diameters ranging from 5 to 500 nm were formed in diluted electrolyte solutions of sulfuric acid, oxalic acid, and phosphoric acid. Irregularly shaped tin particles in nano sizes were formed on the AA…
It is well known that the physical force cleaning such as megasonic (MS) and ultrasonic (US) cleaning are used in FEOL (front-end-of-line) and BEOL (back-end-of-line). Recently, with scaling down below 43 nm, the influence of pattern damage by physical force methods such as MS and US irradiation has been reported. Hen…
Monodisperse Cu2WO4(OH)2 round and elliptical hollow spheres have been successfully prepared by a ligand-assisted dissolution process, without any template or surfactant.
In this study, EBSP (electron backscatter diffraction pattern) method was applied to evaluate changes in misorientation during creep deformation. The tested material was a solid solution strengthened Ni base superalloy, Hastelloy X, and creep tests were conducted at 1123K under the stress of 49MPa. It was confirmed th…
The aim of this research is to elucidate the mechanism for the formation of nanotubes from hollow particles of amphiphilic graft copolymers, such as poly(ethyleneimine)-graft-poly(methyl methacrylate) (PEI-g-PMMA), under non-equilibrium conditions. The study was performed at either 15 or 17 °C with fluid shear in a mi…
A study is made of the resonant and nonresonant L x-ray emission spectra of impurities in the semiconducting compounds ZnS:Mn, ZnO:Mn, ZnO:Co, and Co2O:Mn. An analysis of the Mn L2,3 x-ray emission spectra of Zn1−xMnxS (x=0.1–0.3) reveals that the Mn impurities do not form clusters in the ZnS lattice. Studies of the M…
Hydrogel electrolytes, hydrotalcites holding different concentrations of KOH aqueous solutions, were prepared as a candidate for an electrolyte in all solid-state alkaline secondary batteries. The hydrogel electrolytes had high ionic conductivity (maximum 0.56 S cm − 1 at 30 ° C ) and diffusion coefficient of zincate…
In this study, the impact of the conditions of solution treatment on the degree of sensitization (DOS) of austenitic stainless steel (AISI 304) was investigated in detail. The results derived from the electrochemical potentiodynamic reactivation (EPR) test indicated that the DOS decreased as the solution treatment tem…
Estudou-se a degradação de um polipropileno copolímero não estabilizado durante a extrusão a diferentes temperaturas (de 180 a 240 °C) e a conseqüente geração de compostos orgânicos voláteis (VOC). Os VOC foram coletados por meio de um condensador de gases, conectado na zona de desgaseificação da extrusora, e analisad…
The calculated dispersion and electrostatic intermolecular interaction energies in crystals of γ, α(H 2 O), and ɛ polymorphs of 2,4,6,8,10,12-hexanitro-2,4,6,8,10,12-hexaazawurtzitane (HNIW) were compared. Preliminarily, nonempirical quantum-chemical calculations of the three compounds with complete geometry optimizat…
Nanoporous carbon materials for use as hydrogen storage materials were fabricated from rice husks. Rice husks from agricultural waste changed to porous carbon materials by heat treating and KOH activation. The specific surface area of the porous carbon materials increased from 11 to 2061 m2/g as the KOH weight ratio i…
This research describes experimental studies on the use of coconut fibre as enhancement of concrete. \nThe addition of coconut-fibres significantly improved many of the engineering properties of the \nconcrete, notably torsion, toughness and tensile strength. The ability to resist cracking and spalling …
The aim of the work was to find out how the modification of surface treatment and microstructures aspect the fatigue characteristics of the considered sintered materials. Two dfferent systems were prepared: as-sintered and shot peened prealloyed sintered (Astaloy CrL based) steels with addition of 0.5% and 0.7% C. Sin…
The effect of line scaling on Cu grain structures has been investigated by using both plan‐view and cross‐sectional transmission electron microscopy (TEM) techniques. Cu damascene lines with three different line widths of 850, 185 and 60 nm were studied. The plan‐view TEM images revealed that the 850 nm lines had both…