Materials Literature
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Corrosion of storage tank product side bottoms and tanks of tankers is one of the most critical problems worldwide in oil and gas industry.The protection methods currently in use include cathodic protection systems (CPS) and soluble corrosion inhibitors (SCI).Crude oils contain water and various soluble inorganic and…
CP-Ti and Ti-153 were adopted in this study to observe their electrochemical behavior in serving as the cathode for photovoltaic hydrogen production. The designed cyclic hydrogenation-solution heat treating processes were performed to increase the hydrogen uptake for both alloys. The results are as follows. (1) Both a…
Structural and relaxat ion aspects of plasticizat ion on the examp le of cellulose acetate plastics are studied. Three types of plasticizat ion are examined: the p lasticizer is miscible with the poly mer at processing and operating temperatures; the plasticizer is miscible with the poly mer at processing temperature…
The functionalized pyrrole copolymers were fabricated by electropolymerization of pyrrole (Py) and functionalized pyrrole monomers, pyrrole-3-carboxylic acid (P3C) and 4-(3-pyrrole) butyric acid (PBA). The electrochemical behavior and doping/dedoping properties of the obtained copolymer thin films were investigated by…
Abstract—This paper presents a frequency domain technique for reconstructing the constitutive parameters of inhomogeneous planar layered chiral media based on an optimization approach. The measured co- and cross-reflection and transmission coefficients are used to extract profiles of electromagnetic parameters of the…
The impact loading was performed for various strain rates. Strain rates in the range 2000/s to 2600/s is applicable in defence related applications Maximum and elastic limit strains which the samples exhibited in the range of low strain rates (nearly 1500/s) and high strain rates (nearly 3000/s) have been depicted in…
Bamboo carbon decomposed by low temperature has a high surface area and contains micro-holes; it belongs to one of the amorphous carbon materials. Due to the large lithium storage space and high discharge performance rate, lithium batteries enjoy high power consumption. However, there are also some defects of the firs…
Millimetre long individual single walled carbon nanotubes (SWCNTs) were consistently grown and fabricated into carbon nanotube field effect transistors (CNTFETs). In this work, we extracted the effective mobilities in the strong inversion region, near-threshold region and subthreshold region respectively for these lon…
The design of an efficient quasi-optics Frequency Selective Surface (FSS) filter which is required to provide a -3 dB pass band from 405 GHz to 441 GHz is presented. For atmospheric remote sensing application, this space-borne spatial device consists of a silicon layer and a thin copper layer which is perforated with…
Polymer electrolyte of poly(ethyl methacrylate) and polyvinyl chloride blend containing various weight percentages of ammonium iodide salt were prepared via solution casting technique employing tetrahydrofurane as the solvent. The conductivity values of the electrolytes were determined via impedance spectroscopy. The…
Summary — Intercalation of polyacrylamide (PAAm) and poli(acrylic acid) (PAA) into interlayer spaces of natural montmorillonite by the in situ polymerization technique was studied. The modifications were carried out with using both the raw and pre-treated clay. It was shown that no initial modification of the layered…
This paper reports a selective growth method for growing crack-free semi-polar (1-101) GaN on V-grooved 7°-off (001) Si substrates by using a reticular SiO 2 mask. This method effectively reduces the effect of thermal stress on GaN so that crack-free (1-101) GaN films as thick as 1 μm are obtained after coalescence of…
First measurements on a combined instrument with a thin fibre optic Raman probe mounted inside a hollow tactile resonance sensor have been performed in ambient light on porcine tissue. The ambient fluorescent light was removed successfully from the spectra. The stiffness and the biomolecular composition of the tissue…
Graphene nanoflakes in different weight percentages were added to polyurethane top coatings, and the coatings were evaluated relative to exposure to two different experimental conditions: one a QUV accelerated weathering cabinet, while the other a corrosion test carried out in a salt spray chamber. After the exposure…
The influence of annealing of Gd5Ge2Si2Fex alloys at 1200°C and of alloying with various amount of iron on structure as well as thermal and magnetocaloric properties is investigated. It was found that annealing for 1 to 10 hours improves the entropy change, but reduces the temperature of maximum magnetocaloric effect…
A co mparative study between conventional annealing (CA) and rap id transformation annealing (RTA) of cold-rolled, lo w-carbon (microalloyed) steel having different starting microstructures showed that fine-ferrite grain sizes (4-6 m) with hard-phases such as, martensite and bainite in RTA treated samples offered muc…
Thermoelectric transport properties of Te-substituted In4Se3 compounds are presented in terms of the condenson state. Regardless of anionic substitution, the condenson-related charge and thermal transport properties were clearly observed in the anionic substituted In4(Se0.95Te0.05)3−δ compound, and the enhanced thermo…
High resolution scanning transmission electron microscopy with an aberration corrected and monochromated instrument has been used for the assessment of the silicon-based active layer stack for novel optoelectronic devices. This layer contains a multilayer structure consisting of alternate thin layers of pure silica (S…
Monolithic nitrocellulose and cellulose composites (NC-C) were obtained by cross-linking a mixture of nitrocellulose with cellulose using hexamethylene diisocyanate (HDI). They were incorporated into a model reactive armour. An X-ray technique was used to examine the influence of the cellulose content on the accelerat…
Over the past several years, there has been increasing research and clinical interest in using nanotechnology for cancer therapy. Nanoparticle provides tremendous potential for future medical therapy. Besides targeting cancer cells, delivering and releasing drugs in a regulated manner, the specificity of nanoparticles…