Materials Literature
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The Large Helical Device (LHD) has been equipped with movable- and fixed-type material probe systems. Characterization studies of surface modifications on plasma-facing components (PFCs) have been actively progressing by using these probes. After exposure of the PFCs to the plasma, various kinds of surface analysis we…
The electron beam treatment technology for purification of exhaust gases from the burning of heavy fuel oil (HFO) mazout with sulfur content approximately 3 wt % was tested at the Institute of Nuclear Chemistry and Technology laboratory plant. The parametric study was conducted to determine the sulfur dioxide (SO2), o…
The magnetic properties of nanocrystalline CoFe(subscript 2-x)Al(subscript x)O4(0≤x≤1) spinel ferrites have been investigated by means of Mossbauer spectroscopy, using a vibrating sample magnetometer (VSM). The crystal structure was found using an X-ray diffractometer (XRD) and verified using transmission electron mic…
Pure ZnO nanorod arrays and well-aligned ZnCoO nanorod arrays were fabricated on glass coated with ZnO films via the hydrothermal method. The structures and morphology of the ZnO arrays were studied by scanning electron microscope, X-ray diffraction, and pho-toluminescence spectroscopy. Photoluminescence spectra are c…
Abstract Two series of samples, Sm 2 Zr 2 O 7 and Eu 2 Zr 2 O 7 , were prepared by the polymeric citrate precursor method and calcined in static air between 700–1450 °C for 24 h. Nano‐size particles obtained were larger with increasing calcination temperatures. Sm 2 Zr 2 O 7 and Eu 2 Zr 2 O 7 samples have fluorite pha…
Encapsulated wire-element stress gauges enable changes in lateral stress during shock loading to be directly monitored. However, there is substantial debate with regards to interpretation of observed changes in stress behind the shock front; a phenomenon attributed both to changes in material strength and shock-disper…
Abstract Polypropylene samples in a wide molecular weight range between approx. 100 kg/mol to 1 600 kg/mol were processed by injection molding to thin walled micro specimens with respect to study shear induced crystallization phenomena under high shear rate and subsequently possible self reinforcement effects. The spe…
Characteristics of NO x removal combining dielectric barrier discharge (DBD) plasma with selective catalytic reduction (SCR) by C 3 H 6 were investigated under the conditions of high NO x concentration and high space velocity at various temperatures. Experiment results show that there were no obvious removal of NO x a…
NANOTECHNOLOGY is having a great impact on many industrial applications, such as manufacturing, semiconductors, nanostructured materials and biotechnology. As relates to the latter, nanobiotechnology focuses on the ability to work at the molecular and atomic level to fabricate structures combining biological materials…
This work reports the results from the synthesis of nanostructured ZnO thin films via electrochemical deposition on glass substrates coated with F doped SnO2. The influence of the deposition parameters on the properties of the obtained ZnO films was studied. The Raman spectra of the ZnO films contain the typical for Z…
On the W chromosome of the silkworm, Bombyx mori, we found a novel piggyBac-like DNA transposon that potentially encodes an intact transposase (610 amino acid residues), which is flanked by 16-bp perfect inverted terminal repeats and a duplicated TTAA target site. Interestingly, we also identified another intact copy…
An experimental program is underway to measure the impact and high strain rate properties of triaxial braided composite materials and to quantify any degradation in properties as a result of thermal and hygroscopic aging typically encountered during service. Impact tests are being conducted on flat panels using a proj…
The profile distributions of aluminum extracted by the Tamm and Bascomb reagents and of the exchangeable aluminum were studied in soils of automorphic, transitive, and accumulative positions in the landscapes of the southern taiga. In the mineral horizons of the gleyic peaty-podzolic soils developed on poorly drained…
Multi-wall carbon nanotube (MWCNT)/polymer composites are hybrid materials that combine numerous mechanical, electrical and chemical properties and thus, constitute ideal biomaterials for a wide range of regenerative medicine applications. Although, complete dispersion of MWCNT in a polymer matrix has rarely been achi…
With the aim of developing a single-crystal graphene substrate, which is indispensable for practical applications of graphene, we are experimentally and theoretically investigating the structural and physical properties of graphene grown on silicon carbide by thermal decomposition.
The surface chemical composition and pyroelectric properties in polypropylene (PP) film poled by corona discharge in the air were estimated by Fourier transform infrared spectrophotometry (FTIR), gel permeation chromatography (GPC), differential scanning calorimetry (DSC), thermally stimulated depolarization current (…
The electrical conductivity and thermal expansion coefficient of GdBaCo2O5.5 samples have been measured in order to reveal the mechanism of the metal-insulator transition in cation-ordered cobaltites RBaCo2O5.5 (where R is a rare-earth element) and its relation to the change in the spin state of cobalt ions. It has be…
Abstract High‐pressure torsion (HPT) was conducted on Cu alloys containing ferromagnetic Co and Fe particles. Electron probe microanalysis, X‐ray diffraction analysis, and transmission electron microscopy confirmed that the particles were significantly refined through fragmentation and some fractions were dissolved in…
10% KF-doped barium titanate powders, Ba 0.9 K 0.1 TiO 2.9 F 0.1 , were synthesized through a sol–gel process. The powders, calcined at 650 °C, consist of cubic crystalline particles of ∼70 nm in length; the particle size increases to ∼200 nm as the firing temperature increases to ca. 800 °C, above which F 2 begins to…
The mechanical properties of polymer encapsulating materials change considerably when packages are exposed to elevated temperatures for longer times. Here we report a systematic study on the change in viscoelastic properties of a commercial molding compound which is stored at 175°C for periods of time ranging up to 4…