Materials Literature
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It is shown that significant improvements in partial discharge (PD) measurement can be achieved through the use of ultrawideband (UWB) coupling techniques. These enhancements are principally in the areas of increased sensitivity, external noise rejection, and better understanding of the physics of the PD process. Exam…
Angular magnetoresistance oscillations have been studied systematically for β-(ET)2 IBr2 in the magnetic field rotating in a series of planes perpendicular to the conducting (a, b)-plane. The oscillations have been found in all studied planes. The shape of the Fermi surface transverse cross-section has been reconstruc…
In this paper, we present a new kind of bistable liquid crystal display (Filled Nematic) using static light scattering, and its application as a high resolution laser-addressed display. The new material consists of small inorganic particles dispersed in a nematic liquid crystal. In dispersion the particles form intern…
Термодинамика изотропных двухфазных систем.2.2.Термодинамика кристаллов в равновесии с расплавом или паром.2.3.Термодинамика малых частиц с сохраняющимся числом атомов.2.4.Атомная модель кристалла в вакууме и химический потенциал его атомов.2.5.Плавление и квазиплавление малых частиц.3. Плотность уровней и характерные…
Looking at recent advances in the area of elastomers and rubber-like elasticity, this monograph reviews and evaluates existing elastomers and presents some new results.
A multi-ion-beam reactive sputter (MIBERS) deposition technique was devised to grow ferroelectric lead zirconate titanate (PZT) thin films of different compositions (Zr/Ti ratios of 50/50 and 56/44) from individual metal targets of Pb, Zr, and Ti. This technique offers a highly controllable deposition process allowing…
Computational simulation procedures are used to identify the key deformation mechanisms for (0)(sub 8) and (90)(sub 8) SiC/Ti-15 metal matrix composites. The computational simulation procedures employed consist of a three-dimensional finite-element analysis and a micromechanics based computer code METCAN. The interpha…
A characteristic wavy-line texture of zinc ferrite (ZnFe2O4) has been formed on the surface of Fe2O3 particles by solid-state reaction between α-Fe2O3 and ZnO particles. The wavy lines were confirmed as having the ferrite composition. The texture was formed by an initial rapid interface reaction followed by the wideni…
The theory of photoelectrochemical imaging using a scanning laser microscope is presented in outline: the idea of a photocurrent transfer function whose parameters might be spatially variable is introduced and a distinction is made between continuous-scan and step-scan methods of rastering the light spot. In the conti…
Recent action by ASTM Committee E 49.05 has renewed progress in addressing quality and reliability issues for materials databases. Three major thrusts, the development of a guide for the development and management of materials databases, standardization of specific quality indicators for data and databases, and standa…
Impact experiments were performed with Charpy specimens and with large bend specimens made from a ferritic pressure vessel steel. All specimens were side-grooved and fatigue-precracked. Different amounts of ductile crack extension up to 16 mm were achieved by varying the available impact energy. The measured hammer lo…
Hydrothermal experiments have been carried out to find the equilibrium conditions for the reactions: 2kaolinite = pyrophyllite + 2diaspore + 2water (1) kaolinite + 2quartz = pyrophyllite + water (2) As starting materials, a natural mixture of kaolinite-pyrophyllite-boehmite was used for the experiments. Determination…
The 10 to 13 wt% Cr-containing ferritic and ferrito-martensitic stainless steels are seen as promising reactor core structural materials for fast breeder reactors and first wall materials for fusion reactors. The studies involved diffraction electron microscopy and X-ray microanalysis on the 10 to 13 wt% Cr-containing…
Abstract We have calculated the temperature dependence of the direct and indirect band gaps in silicon and germanium. The electron‐phonon potential as well as the phonon frequencies and eigenvectors are calculated consistently within the rigid quasi‐ion model. Comparison is made with experiment and with the theoretica…
We fabricate a new small hollow−cathode Penning SPS with a multiaperture extraction for the anode N1 production study. It was found, that the anode surface conversion of superthermal and fast hydrogen atoms into H− ions is effectively realized in the Penning SPS in the case of an increased, cesiated anode surface. (AI…
The pyrolysis of Fe-tetraphenylporphyrin chloride (FeCITPP) has been examined by FTIR spectroscopy. Two series of samples, with and without additional carbon black, were studied. It was found that the decomposition of FeCITPP occurred in a very narrow range of temperature. The mixture of FeCITPP and carbon decomposed…
Abstract The purpose of this study is to evaluate the effect of some well‐known flame retardants on the ignition behaviour of cotton fabric. Two types of flame retardants acting in different phases (e.g. condensed phase and gas phase) were used. At low add‐on of the retardant acting in the condensed phase the ignition…
Abstract Electrical breakdown of polyphenylene sulfide (PPS) films, one of the high‐temperature engineering plastics, has been investigated. The results show that the dc breakdown strength is lower than the impulse one, and that the difference in electric strength between dc and impulse becomes wider as the sample thi…
Abstract The phase equilibrium in the systems Na 2 SeO 4 CdSeO 4 H 2 O and Na 2 SeO 4 MnSeO 4 H 2 O were studied and it was established that new phases were obtained — double salts with a composition: Na 2 Cd(SeO 4 ) 2 · 2 H 2 O and Na 2 Mn(SeO 4 ) 2 · 2 H 2 O. The fields of phase equilibrium of the double salts i…
A novel ‘picket-fence’ porphyrin, 5,10,15,20-tetrakis[o-(tetrahydro-2-thenoylamino)phenyl]porphyrin (H2L) with ligating tetrahydrothiophene rings disposed perpendicular to the porphyrin plane has been synthesised. Its zinc(II) derivative, [ZnL], binds two silver(I) ions co-operatively with a dissociation constant of 4…