Materials Literature
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Medium voltage underground distribution cables represent a large investment for electric utilities worldwide. In many utilities a significant percentage of these cable circuits are over thirty years old and may be approaching the end of their estimated lives. As a result utilities are now being faced with important de…
This paper describes how a commercially available test set has been used to make preliminary determinations of condition of XLPE cable insulation at remote sites in NE Queensland. Polarization and depolarization currents are measured with an injection voltage of 5 kV with observed depolarisation period of 60 seconds.…
Pb(Mg 1/3 Nb 2/3 )O 3 –PbTiO 3 (PMN–PT) single crystals have a tetragonal 4 mm symmetry. In this paper, the elastic, piezoelectric, and dielectric constants of PMN–PT single crystals were measured by the resonance method. A total of eleven independent material constants were measured including six elastic compliance c…
Synthetic CVD diamond, being non-toxic and tissue equivalent, has been proposed as a ionizing radiation passive dosimeter with relevant applications in radiotherapy and clinical dosimetry. In the present work, the thermoluminescence (TL) properties of microwave-assisted chemical vapor deposition (MWCVD) diamond, 6 μm…
We report the coexistence of TE and TM surface modes in certain same frequency domain at the interface between one isotropic regular medium and another biaxially anistotropic left-handed medium. The conditions for the existence of TE and TM polarized surface waves in biaxially anisotropic left-handed materials are ide…
Nearly mono‐disperse high quality quantum dots (QDs) of zinc selenide have been synthesized by organometallic route that includes use of well known surfactants such as a carboxylic acid and trioctylphosphine (TOP). Single‐step synthesis was performed at a temperature that is lower than many reported methods for such q…
The evolution of the adsorption and structural properties of large-pore SBA-16 silica samples was studied in relation to hydrothermal treatment and template removal procedures. These samples were synthesized using the poly(ethylene oxide)-poly(propylene oxide)-poly(ethylene oxide) triblock copolymer Pluronic F127 as t…
In terms of the theory of second-order phase transitions with allowance for the magnetophonon interaction of the magnetic subsystem with the crystal lattice of the ferromagnet, an approach has been developed which makes it possible to give a consistent thermodynamic description of the mechanism of formation of invar a…
Piezoelectric zinc oxide (ZnO) and its ternary alloy magnesium zinc oxide (MgxZn1−xO) films are deposited on r-plane (011¯2) sapphire (Al2O3) substrates using the hybrid deposition technology by combining metal-organic chemical vapor deposition (MOCVD) and sputtering. An ultra-thin ZnO buffer is first grown on r-Al2O3…
IASCC (Irradiation Assisted Stress Corrosion Cracking) is a matter of great concern for degradation of core internal components in light water nuclear reactor. A Japanese National Project is currently in progress, aiming to establish a data base for plant life management (PLM) which contributes to lifetime evaluation…
Nanocomposites containing controlled (in the course of synthesis) concentrations of lead sulfide nanoparticles dispersed in the polymer matrix were prepared by the method of gas-phase polymerization on the surface of an active monomer, paracyclophane, which was codeposited with lead sulfide molecules. According to wid…
Abstract A study of the synthesis of carbon nanoparticles embedded in carbon thin films deposited by radiofrequency (RF) (13.56 MHz) Ar/H 2 (4 %)/C 2 H 2 plasmas is presented. The carbon nanospheres exhibit an amorphous structure that is clearly observed at 300 W, under 0.1 Torr, and grows in size with increasing C 2…
Semiconducting carbon nanofibers (CNF) were prepared from three different sources, i.e., acetylene, ethanol, and cotton by the chemical vapor deposition (CVD) process at 850°C. CNF was then activated with KOH to attain high surface area. The characteristic study of the CNF was done to get information about the structu…
Space charge formation in polyimide (PI) films heavily depends upon the water content. In order to clarify the effect of carrier injection on space charge properties in PI films, space charge distributions were observed in the PI films with different electrode conditions, such as aluminium (Al) or gold (Au) deposited…
The friction and cohesion forces are some of the most important parameters that affect the yarn spinnability and tenacity. A new and simple device was carried out in order to quantify the friction and cohesion forces during a quasi-static fiber slippage in a sliver. This device was composed of two identical small carr…
In this work, corrosion monitoring of Zn-based coatings is investigated through potentiodynamic and electrochemical impedance spectroscopy (EIS) methods. The first part of the study is devoted to galvanised coatings conventionally manufactured in the industry. The second part focuses on the corrosion resistance of a l…
Metallic fuels containing minor actinides and rare earth additions have been fabricated and are prepared for irradiation in the ATR, scheduled to begin during the summer of 2007. Oxide fuels containing minor actinides are being fabricated and will be ready for irradiation in ATR, scheduled to begin during the summer o…
The thermal decompositions of unirradiated and γ-irradiated Ru(acac) 3 were studied in air. The results show that decomposition proceeds in one major step in the temperature range of 150-250°C with the formation of RuO 2 as a final solid residue for unirradiated Ru(acac) 3 . For γ-irradiated Ru(acac) 3 , with a total…
Abstract A fossil freshwater diatom species, Thalassiosira inlandica sp. nov., is described from Pleistocene lacustrine sediments of the Kathmandu Basin on the southern slope of the Nepal Himalaya. Thalassiosira inlandica is characterized by (1) a nonplicated (flat) valve face, (2) networks of ribs and costae, (3) sem…
Using an integrated measurement system, partial discharge activity has been recorded simultaneously on a pulse-by-pulse basis in terms of radiated radio-frequency (RF) pulse energy and the apparent charge measured according to IEC60270. Plotting the energy of the RF pulses against the corresponding apparent charge pro…