Materials Literature
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Over the past 50 years, molecular simulation has emerged as a useful tool for providing microscopic insight into a variety of chemical systems and processes. There are two main particle-based simulation techniques – molecular dynamics, which uses deterministic equations of motion integrated over sma...
In order to examine the feasibility of using wood as a plastic substitute, we studied the possibility of producing cups from wood by extrusion. It is common to use powdered wood in the same kind of studies. Whereas in this study, we didn't powdered raw materials and used wood in bulk state. The formability depended st…
Powders of hemihydrate gypsum are set and hardened at room temperature by mixing with a phosphoric acid solution to be formed into the dihydrate gypsum membrane. These gypsum-derived membranes exhibit superprotonic conductivities of approximately in the entire temperature range from to . A /air configuration cell usin…
In galvanizing process several byproducts are formed. Among them solid materials composed by different compounds are grown in the galvanizing kettle. The present work examines the structure of the bottom dross and the blowing waste using X-ray and electron microscopical techniques. From this research it was deduced th…
The electrostatic force from the electric field and the Coulomb force between charges are key forces to overcome the surface tension and viscoelastic force. In this paper, we report the results of a systematic investigation of the effect of variation of the solution rate on the electrospinning of Poly (ethylene oxide)…
Abstract: Cycloaliphatic epoxy resins have been used alongside silicones and ceramics for more than 30 years as insulation materials for outdoor applications. Insulators made of cycloaliphatic epoxies offer many advantages over those made of ceramic or silicones. Standard cycloaliphatic epoxies are construction materi…
Catalysts for the utilization of methane from the coal mine ventilation air The paper indicates coal mines as the source of permanent emission of low-concentrated gases, which have increased the greenhouse effect. This paper proposes the catalytic oxidation of methane as the solution to the problem of methane utilizat…
For fusion material research, minichannel gas flows are designated to cool irradiated material specimens. Since the facility design requires accurate predition methods for the temperatures in the structure and the specimens, relevant experiments were conducted. This paper reports on the experimental procedures, which…
In 1951, Birks and Black showed experimentally that the fluorescence efficiency of anthracene bombarded by alphas varies with total fluence (N) as (I/I0) = 1/(1 + AN), where I is the fluorescence yield, I0is the initial light yield, and A is a constant. Schulman observed a similar effect to the Birks and Black equatio…
Dynamic developments in the engineering and technology fields give reasons to increase the requirements posed to various engineering materials. Hard magnetic materials based on rare earth and transition metal compounds, in particular on the Nd2Fe14B phase, are materials with big application possibilities. Good magneti…
SiO2/CeO2 mixed oxide (designated as SC) with variable ceria contents, SC1 = 5.6, SC2 = 8.0 and SC3 = 13.0 wt%, prepared by the sol-gel processing method, were obtained as amorphous solids possessing specific surface areas of SC1 = 463, SC2 = 474 and SC3 = 460 m²g-1. Phosphate ions were immobilized onto the surface of…
Thin films of cadmium stannate (Cd2SnO4) have been deposited on glass substrates by pulsed Nd:YAG laser at room temperature. The deposited film was crystalline in nature and highly oriented in the (311) direction. Using this method, Cd2SnO4 films with the Hall mobility of 25 cm2 V-1 s-1 and the carrier concentration o…
We report the fabrication of epitaxial ZnO photoconductive sensors on sapphire substrates. With an incident light wavelength of and a applied bias, we achieved a sensor responsivity of . It was also found that low-frequency and high-frequency noises in the fabricated sensors were dominated by 1/ f type and shot noises…
Magnetic resonance spectroscopy (MRS) is of prime importance in diagnostics and offers a means of analyzing, in vivo, the chemical content of living tissue, as a non-invasive alternative to biopsy. Several heptadentate, lanthanide complexes have been synthesized and their potential to act as shift and relaxation agent…
The structural changes during the phase change between the amorphous and crystalline phase in Ge2Sb2Te5 have been the subject of intense study due to the importance of Ge2Sb2Te5 in phase change memory devices. In our study, the energetics of the transition between the crystalline and the amorphous phase of Ge2Sb2Te5 i…
We have investigated certain aspects of the dielectric properties of anodic oxide films on tantalum in connection with Dignam's theory that a special current-driven polarization process is responsible for the transients shown by the ionic current on changing the electric field in the oxide. In his experiments, which w…
For the purpose of grain refinement of AZ31 magnesium alloy sheets, influences of asymmetric rolling conditions such as the roll temperature and the mismatch speed ratio on microstructures and texture were examined, and compared with those of conventional rolling sheet. Grain size of the annealed sheets processed at a…
It is well known that carbon nanofillers (CNFs) enhance the stiffness, electric conductivity and thermal conductivity of polymers. Alignment of carbon nanofillers in polymer is expected to increase the performances in the aligned direction. Several papers have reported that applying alternating electric field to a liq…
Powder neutron diffraction experiments with Rietveld analyses were carried out on pure and Ta-substituted Zn2TiO4 at room temperature to investigate the defect structure together with the oxide ion conduction mechanism. The refined structure of pure-Zn2TiO4 agreed well with the previously reported inverse spinel-type…
Understanding tensile and fracture behaviors of die cast magnesium alloys is of importance for proper design of various emerging automotive applications. In the present study, magnesium alloy AM50 was high pressure die cast into rectangular coupons with section thicknesses of 2, 6, and 10 mm. Effect of section thickne…