Materials Literature
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The corrosion-protective performance of plasma-polymerized (PP) films on metal substrates has been investigated by cyclic voltammetry, X-ray photoelectron spectroscopy (XPS), and surface potential measurements. A PP film from cyclohexane was deposited on Fe, Ni, and Cu substrates using a radiofrequency generator. A PP…
The stored energy, present in a material after deformation in the form of dislocation density, plays a crucial role in the recrystallizaton process. It can be evaluated directly using electron diffraction or indirectly using X-ray and neutron diffraction (peak profile study). The stored energy can be also calculated,…
Plasma depositions of ultra thin films from seven silicon-containing liquid monomers were investigated using a continuos wave (CW) plasma source. The deposition rate of plasma polymerized films were determined using a quartz crystal microbalance (QCM) technique while the film composition were determined spectroscopicl…
We previously reported the isolation of eleven new cardiac glycosides called cheiranthosides I-XI together with two known ones (olitoriside and erysimoside) from the seeds of Erysimum cheiranthoides L. The glycosides were evaluated for their inhibitory activity against Na+,K(+)-ATPase by comparing with typical cardiac…
Precipitation in Mg–Li–Zn ternary alloys containing 4 to 13%Li and 4 to 5%Zn (in mass%) with α or β single phases, or with (α + β) dual phases was investigated using a micro Vickers hardness measurements and transmission electron microscopy. Age hardening in the α phase alloy was found to occur, which was attributed t…
Reflectance of single-wall carbon nanotubes (SWNTs) has been measured over 15-30000 cm-1 (2-3720 meV). The sample is a free-standing film composed of purified SWNTs. The temperature dependence of the reflectance is quite small at all temperatures studied (7.8 K to 298 K) and no vibrational features are observed. The s…
The spontaneous deposition of Ru on Au(111) was performed in 10-3MRuCl3 + 0.5MH2SO4 solution. The obtained surface was characterized by STM under potential control in 0.5MH2SO4 solution. The coverage of the Au(111) terraces by deposited Ru was estimated by STM to be 0.02 ML. Step decoration could be noticed in the STM…
Rhyolitic Rotliegend (lower Permian) -volcanics of the Thuringian Forest represent endogenous domelike structures and some coherent lava flows. The outer part of their marginal facies, which forms the spherulite zone as an important facial part with dimensions in the decameter range, reflect processes of degassing and…
As a new structure of solid matter quasicrystal brings profound new ideas to the traditional condensed matter physics, its elastic equations are more complicated than that of traditional crystal. A contact problem of decagonal two? dimensional quasicrystal material under the action of a rigid flat die is solved satisf…
As is known, the magnetic properties of ferrites are liable to be influenced by external stress. In this paper we describe our study of the effects of chemical composition and microstructure on the stress sensitivity of initial permeability of NiMgCuZn ferrites. When the external stress is applied to the ferrites, the…
The low-frequency electronic noise properties of individual single-wall metallic carbon nanotubes are investigated. The noise exhibits a 1/f frequency dependence and a V 2 voltage dependence. The noise power at 8 K appears to be three orders of magnitude smaller than at 300 K. As a demonstration of how these noise pro…
This paper has studied plasma transport in scrape-off layer(SOL), by using ‘two-point’ mode and particles continuity equation. We have calculated plasma density distribution, temperature distribution, impurity radiation power loss in SOL with friction.
Mg–Ti alloys and pure Mg were successfully gas nitrided at 723 K for 129.6 ks under 0.1 MPa N2. Ti was selected as alloying element due to its high nitrogen affinity. Fine Ti particles in 10 \\micron range were homogeneously distributed in the alloys. Bulk Mechanical Alloying process was used to produce the sample hav…
Well-resolved isotropic EPR spectra were observed for Si(CH3)4+ (TMS+), Si(CH3)3CD3+ (TMS-d3+) and Si(CH3)2(CD3)2+ (TMS-d6+), generated by ionizing radiation in SnCl4 matrices at 77 K. The TMS+ radical has been reported to have a C2v structure possessing two apical methyl groups with long Si–C bonds and two equatorial…
This paper deals with the performance of alumina sol, prepared from a cheaper precursor and used as a bonding agent in no-cement refractory castables fabricated by simple tapping technique. The physical properties of sol-bonded-castables indicate a significant improvement at elevated temperatures. The beneficial role…
Abstract The simple rules, based on the bond-valence matching and coordination numbers balance, are extended to minimum-size polyhedral cluster in order to describe all probable bonding topologies for a given inorganic substance. This approach, referred to as the Extended Bond-Valence Model (EBVM), allows one to const…
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Retention characteristics of a ferroelectric random access memory (FRAM) devices are strongly influenced by the integration processes and the ferroelectric material itself. In this study, we investigated the retention behavior of the PZT-based 4Mbit FRAM devices. Various heat treatment conditions were introduced to cr…
Covalent oligomeric and polymeric phases of SeO2 and SO2 have been investigated at high levels of density functional calculations on molecular and periodic models. Polysulfite [–S(O)O–]x, a one-dimensional allotropic form of SO2, is calculated to be energetically less stable than free molecular sulfur dioxide by less…
In a nitrogen stream under an atmospheric condition, NOx decomposition was investigated using two discharge-plasma systems, such as a Dielectric Barrier Discharge (DBD) and Packed Bed Reactor (PBR). In the absence of oxygen, the decomposition in the former system started at input voltage of 1kV and showed 100% convers…