Materials Literature
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Abstract Durch Tempern der binären Oxide CsO 0,52 , NaO 0,45 , LiO 0,5 und GeO 2 im mol. Verhältnis 1,24:1,4:6,7:3,9 (Ni‐Bömbchen; 600°C/89 bzw. 65 d) wurden erstmals Einkristalle von CsNa 3 Li 8 {Li[GeO 4 ]} 4 in Form von schwachgelblichen Prismen sowie blaßgelbem Pulver erhalten: Raumgruppe I 4/ m (I. T. Nr. 87) mit…
The purpose of this paper is to present an easy method for analyzing the operating characteristics of a separate-type transformer connected to an external circuit including elements such as batteries, resistances, and diodes. This method, a combination of two- and three-dimensional finite element methods, has been app…
An extensive database of aerosol experiments exists and has been used for checking aerosol transport codes. Data for fission product vapor transport are harder to find. Some qualitative data are available, but the Falcon thermal gradient tube tests carried out at AEA Technology’s laboratories in Winfrith, England, mar…
The effect of in the sub‐parts per million range on the atmospheric corrosion of zinc has been investigated in the laboratory. Each sample was exposed individually to air with careful control of pollutant concentration, relative humidity, and flow conditions. Monitoring of concentration at the outlet of the corrosion…
Diamond films have been deposited on carbon fibers with diameters as small as 5 μm by microwave plasma assisted chemical vapor deposition. An ultrasonic pretreatment of the fibers in a bath containing methanol and diamond paste was required for successful coating of the fibers. In the absence of such treatment, the fi…
In this paper, we investigate a thin film transformer for small electronic devices. This transformer is composed of the lamination of thin film conductors. Both the primary and secondary coils of the film transformer are arranged coaxially on one layer and multiply laminated. The operation principle of the transformer…
Fourier transform infrared (FTIR) spectra and x-ray photoelectron spectra (XPS) were acquired from Cu implanted in fused silica and a borosilicate glass. The FTIR spectra indicate that Cu ion implantation in the silica and borosilicate glasses results in an intensity decrease in the Si–O stretching vibration. The Si–O…
Oriented diamond films have been grown on Si(001) and Si(111) substrates by microwave plasma chemical vapor deposition. X-ray diffractometry has been employed for pole figure measurements which have been evaluated by the component method. This technique can be applied to multiphase materials with overlapping pole figu…
Presents the objective evaluation of a stabilized garment parts handle, based on determination of mechanical and physical properties of fabrics using the Kawabata Evaluation System. Parameters that influence the handle are shown on the basis of 16 parameters of mechanical and physical properties of shell fabric, inter…
Abstract We have observed that methacrylic acid (MA) is far more corrosive than acrylic acid (AA) on copper surfaces when copper was exposed to the vapor of these two acids at ambient temperature and environment. With the aid of modern surface‐sensitive instrumentation, which included grazing angle Fourier transform i…
The influence of γ-, electrons and reactor neutrons irradiation on the optical and electrophysical properties of Gd3 Ga5 O12 single crystals is investigated. Experimental data and theoretical estimations of radiation defect concentration are compared.
Abstract The surface of hot‐dip galvanized steels is a complex system highly dependent upon the composition of the galvanization bath and upon surface treatments such as degreasing, alkaline etching and chromate conversion. In this study, industrial zinc‐coated samples are subjected to degreasing, alkaline etching and…
The physical significance of the first diffraction peak in glassy Se is discussed in the light of recent experimental results regarding the temperature dependence of the parameters characterizing the first peaks in the elastic S(Q,\ensuremath{\omega}=0) and static S(Q) structure factors. The rather different behavior…
Trifluoroacetic acid and ZnCl2 have been used as the initiating system for the living cationic polymerization of β-(vinyloxy)ethyl cinnamate (VEC). In contrast to a previous initiating system [EtAlCl2 and 1-(isobutoxy)ethyl acetate], the use of the new system led to excellent agreement between the molar masses of PVEC…
A new optically active (R)-3-ethylmercapto-2-methylpropionic acid has been synthesized using D(-)—2,10-camphorsultam as a chiral auxiliary. The optical purity of the acid obtained was greater than 98 per cent. Its derivatives, (R)-4-(3-ethylmercapto-2-methylpropionyl)phenyl 4′-alkoxybiphenyl-4-carboxylates (EMMPPmBC;…
Porous silica glass was prepared by sol-gel process from tetraethoxysilane (TEOS). The effects of solvents (water, ethanol), drying condition, heat treatment temperature on specific surface area and pore size distribution of porous silica were investigated. Gelation process accelerates with an increase of H2O content,…
Pd and its fee substitutional alloys which form hydride phases exhibit hysteresis. If Pd-Ni alloys have been hydrided and then dehydrided a number of times at a moderate temperature, the hysteresis is reduced. The reduction of hysteresis increases with increase of X Ni to 0.15 and, if the X Ni = 0.15 alloy is hydrided…
Elastic recoil detection analysis (ERDA) was performed to determine hydrogen concentration profiles near the (100) surfaces of epitaxially grown diamond films. Microwave plasma chemical vapor deposition (CVD) was used for the growth. At the end of the growth, the substrates were treated with and without exposure to H…
The dislocation loops in rutile produced after irradiation by 0.4-1 MeV electrons at various temperatures have been analyzed. Loops formed during electron irradiation at 400°-500°C were pure edge interstitial of the type <100>{100} and were unfaulted. After leaving rutile specimens irradiated at high temperature for a…
Single crystal-silicon quantum wells with SiO2 barriers have been grown from SIMOX silicon-on-insulator substrates. Photoluminescence in the red and near-infrared is observed for average well width &lt;8 nm, with peak signal for 2-nm average width. The luminescence spectrum is independent of well width for SiO2 ba…