Materials Literature
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A dielectric material (SiO 2 ) was added to the PtO x recording layer of a recently developed super-resolution near-field structure (super-RENS) disc to enhance the readout durability. The PtO x –SiO 2 (Pt 8.4 Si 21.1 O 70.5 ) composite layer was prepared by a chip-on-target sputtering method. The recorded mark became…
Triggered steam explosion experiments have been carried out in the TROI facilities to investigate the energetics of the steam explosions. Two types of corium melt were used as a melt. One was eutectic corium at 70:30 wt% (UO2:ZrO2), and the other was corium at 80:20 wt%. The diameter of the water pool was 0.6 m, and t…
Summary form only given. The topological structure and basic approaches for parameter estimation for a new hybrid transformer model are presented in Part I of this two-paper set. Part II deals with the model benchmarking and also discusses additional methods for parameter estimation based on laboratory measurements. T…
Crack propagation behavior in HDPE was studied. The preliminary orientation of the polymer, which is deformed in its isotropic state via necking and breaks down at the neck propagation stage, improves the crack resistance and ductility of the material. The critical crack opening in preoriented HDPE samples dramaticall…
The kinetics of damage accumulation during tension of a low-carbon steel with an edge notch has been studied by acoustic emission, ultrasonic attenuation, and replicas. The criteria of damage, fracture mechanics, percolation, and fractal dimension are estimated and used to distinguish the stages of fracture.
Os basaltos são rochas vulcânicas abundantes provenientes de extensos derrames de lava. A tecnologia de fiação contínua produz filamentos de basalto na forma de fios micrométricos amorfos. Neste trabalho são apresentados resultados da caracterização térmica e morfológica de fibras longas de basalto, de diâmetro microm…
Atmospheric corrosion is a common problem in the Gulf region in Saudi Arabia. Steel products produced locally have a problem of discoloration when stored in stockyards due to atmospheric corrosion. Corrosion inhibition of mild steel in the industrial and marine atmosphere of the Arabian Gulf region was investigated in…
Abstract Single crystals of a third modification of Ag 2 Te 2 O 6 (denoted as Ag 2 Te 2 O 6 –III) and of Ag 4 TeO 5 have been obtained as minor by‐products during hydrothermal phase formation experiments in the system Ag‐Hg‐Te‐O. The crystal structure of Ag 2 Te 2 O 6 –III ( P 2 1 / c , Z = 4, a = 6.4255(10), b = 6.98…
The filtration behaviour of woven and nonwoven fabrics at different air flow rate, dust feed rate, dust loading, time intervals and dust particles has been studied. It is observed that the pressure drop increases with the increase in airflow rate for both the woven and nonwoven filters. In general, the pressure drop i…
This paper presents work conducted on a zirconia (catalyst) activated two-stroke spark ignited engine to investigate the effect of high gauss magnetic energy on cyclic variation of combustion parameters. A 9000 gauss magnet, made up of Neodymium-Iron-Boron, is fixed on fuel line before carburetor. The coating is carri…
Gjerdingenite-Na,\t (K,Na)2Na(Nb,Ti)4(Si4O12)2(OH,O)4•5H2O,\t and\tgjerdingenite-Ca,\t K2Ca(Nb,Ti)4(Si4O12)2(O,OH)4•6H2O, are two\tnew\tmineral\tspecies\tof\tthe\tlabuntsovite\tgroup,\t kuzmenkoite\tsubgroup,\t and\tanalogs\tof\tgjerdingenite-Fe\tand\tgjerdingenite-Mn with\tdominant\tNa\tand\tCa\tat\tthe\tD\tsite,\t r…
Magnetic-field dependence of the resistivities in MnAs(11¯00) films on GaAs(001) and MnAs(0001) films on GaAs(111)B is investigated at low temperatures. Correspondence of the features in the longitudinal and transverse resistivities under reorientations of the magnetization enables us to distinguish the anisotropic ma…
Conditions for synthesizing single-phase solid solutions Bi4V2 − x Cu x/2Ti x/2O11 − x and Bi4 − x/2V2 − x/2Cu x/2Ti x/2O11 − x/2 are studied. The sequence of phase transformations is determined. Possible domains of stability of polymorphic modifications and the overall conductivity as a function of temperature and co…
Doped and undoped titanium dioxide films have been deposited on indium tin oxide glass using the sol-gel technique. The percentage of rutile in the prepared TiO2, calcined at 823 K and determined by X-ray diffraction, was 23% compared to 24% of rutile in P25-TiO2. Cerium doped TiO2 showed mainly the anatase phase, as…
While Pb(Zn1∕3Nb2∕3)O3–PbTiO3 (PZN-PT) single crystals have shown superior ferroelectric properties, less scientific and technical interests have been placed on PZN-PT polycrystalline ceramics due to their poor thermodynamic stability and the difficult processing conditions. Here, we stabilized the PZN-PT based cerami…
3D CFD Model of High Temperature H2O/CO2 Co-Electrolysis Grant Hawkes1, James O’Brien1, Carl Stoots1, Stephen Herring1 Joe Hartvigsen2 1 Idaho National Laboratory, Idaho Falls, Idaho, grant.hawkes@inl.gov 2 Ceramatec Inc, Salt Lake City, Utah INTRODUCTION A three-dimensional computational fluid dynamics (CFD) model ha…
Microscopic one-dimensional noninteracting model for the description of the energy spectrum of the ion subsystem in ionic conductor is considered. The processes of ionic hoppings are described in terms of Pauli operators. Time-dependent correlation functions b(t)b + (0) j in Pauli operators are obtained using the exac…
Abstract Using site‐selective and time‐resolved spectroscopy technique in combination with single molecular spectroscopy technique the concentration quenching of the 1 D 2 luminescence of Pr 3+ ions has been examined in Y 2 SiO 5 :Pr 3+ nanocrystals. The direct comparison of the data obtained for nano‐ and bulk Y 2 Si…
We investigated the thermal expansion properties of a component in order to develop a thermoelectric generating device using a Pb-Te system comprising PbTe doped with 0.5 wt%PbI2and Pb0.5Sn0.5Te, which were selected forn- andp-type legs, respectively, and Ni and Fe, which were selected for the electrodes. [1] The depe…
A fast magnetization reversal accompanied by a large Barkhausen jump in Vicalloy wires was studied. An alternating magnetic field having a frequency of less than 1 Hz was applied only to the center region of the wires. Measuring the position dependence of the pickup coil suggests nucleation and propagation of a revers…