Materials Literature
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Etching resistance of carbon films deposited by plasma chemical vapor deposition (CVD) is one of the concerns to fabricate nanostructures using such carbon films as protective coating films and dummy films. We have carried out H2/N2 plasma etching of carbon films deposited by using an H-assisted plasma CVD method. The…
Actinides co-precipitation is currently investigated in order to synthesize solid solutions of actinides mixed oxalates. This paper deals with the thermodynamic and kinetic study of the precipitation of uranium-neodymium oxalate system. Based on an analysis of the theories developed in the literature, a new expression…
Electrochemical dissolution of Tc metal in 0.5–6.0 M HNO 3 was studied. The quantitative characteristics of corrosion and dissolution were determined. At the HNO 3 concentration in the electrolyte below 2.0 M and potentials below 650 mV (vs. Ag/AgCl), the metal surface is passivated owing to the formation of difficult…
Using 1-methyl-2,4-bis(N′-octadecaneureido)benzene (MBB-18) as a gelator and chlorobenzene (CB) as the solvent, supramolecular gels were prepared. Their phase behaviors were investigated under high pressure using a diamond anvil cell with in situ Raman spectroscopy and optical microscopy at a range of temperatures. As…
Magnetic force microscope (MFM) tips are prepared by coating Si tips of 4 nm radius with L10 ordered FePd-alloy films varying the thickness in a range between 10 and 80 nm. The effects of coating thickness on spatial resolution and switching field of MFM tip are investigated. As the thickness increases from 10 to 20 n…
This paper presents an experimental investigation into the response of circular Domex-700 MC steel plates to repeated uniform blast loads. The experiments are carried out on a ballistic pendulum for a 3mm thick test plate to witness up to five similar uniform blast loads. As expected, a trend of increasing permanent m…
Spinel phase LiMn2O4 is of great interest as cathode materials for lithium-ion batteries. We describe here a new combustion method to synthesize LiMn2O4 directly from lithium nitrate, manganese nitrate, ammonium nitrate and glycol. The resultant LiMn2O4 synthesized under the optimum synthesis conditions shows perfect…
Magnetic graphene-ribbon is a candidate for realizing future ultra high density 100 tera bit/inch2 class data storage media. Multiple spin state analysis was done based on the density functional theory. A typical model has a super-cell [C80H7] which keeping bare (radical) carbons on one side zigzag edge, whereas mono…
Monolithic α-Al2O3 with a mesoporous Al2O3 layer coated onto its macropore walls was successfully prepared. Macroporous monolithic polystyrene foams were filled with alumina hydrosol followed by drying and high temperature calcination to obtain macroporous monolithic α-Al2O3 with good mechanical strength. The resultin…
Shear stress and deformation is inherent to shock-wave compression. Shear deformation is enhanced when the material subject to shock compression is in an initial distended state. Shock Hugoniot data for full-density and porous compounds of boron carbide, silicon dioxide, tantalum oxide, uranium dioxide and playa alluv…
A rare 4-connected neb framework, [Zn(L)(bpmp)]n (H2L = 4,6-dibenzoylisophthalic acid; bpmp = N,N′-bis(4-pyridyl-methyl)piperazine), has been synthesized under hydrothermal conditions and characterized by powder X-ray diffraction, IR, elemental analysis, and single crystal X-ray diffraction. The complex exhibits a rar…
Gold nanoparticles were grown in La-oxide thin films deposited on quartz and silicon substrates. These films were annealed in pure hydrogen gas atmosphere at 300?C for different durations 15 min, 30 min, and 45 min and characterised by the X-ray fluorescence (XRF) and X-ray diffraction. The matrix La-oxide remained am…
Martensitic high strength steel type of 22MnB5 is increasingly used in transport industries for safety components. Al-Si based coating layer is applied to the steel surface to prevent oxidation during hot stamping process. The main objective of performed analyses is to study the differences in formation of the surface…
The results of a single-crystal X-ray diffraction analysis of fluorene, 9-fluorenone, and 9-dicyanomethylenefluorene derivatives as individual compounds, as well as their crystal solvates, molecular complexes, and charge-transfer complexes, are generalized. The most interesting features of the molecular geometry and c…
Paper presents methodology of generation of the uniform, compressive or tensile stresses in ring-shaped amorphous alloys core. In this study we use the set of special nonmagnetic, cylindrical backings. These backings enabled the core to be wound as well as create the possibility of generation of uniform compressive an…
Langmuir-Blodgett (LB) film of tetra-t-butyl-Zn-phthalocyanine (Pc), dicitratodiperoxotitanate complex (TAS) and ditetradecylviologen (V) triad was fabricated on thin glass waveguide as a cascade electron transfer model. The arrangement of the layer as Pc-TAS-V was successfully controlled by LB process. Monolayer of P…
Abstract. Electricity is a major cost for cotton gins, representing approximately 20% of variable costs. Fans used for pneumatic conveying consume the majority of electricity at cotton gins. Development of control systems to reduce the air velocity used for conveying seed cotton could significantly decrease electricit…
1 Institute of Mathematics and Physics, Central South University of Forestry and Technology, Changsha, Hunan 410004, China 2 Shanghai Engineering Research Center of Aquatic-Product Processing & Preservation, College of Food Science and Technology, Shanghai Ocean University, Shanghai 201306, China 3 School of Materials…
The fuel of HTGR is made of some spherical fuel elements with diameter of 60 mm. The cask of fresh fuel is used to temporarily store and transport such a kind of new spherical fuel elements, and it may drop during transport. The dropping process can be simulated by two ways. The first is the coupled Euler-Lagrange (CE…
The properties of electrodeposited PbO2 are sensibly influenced by deposition current and temperature. In particular, tritium radiotracer measurements have demonstrated that protons are incorporated in the bulk of the oxide film and on its surface. The degree of hydration increases with increasing current and decrease…