Materials Literature
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Effects of Si and Ca addition on delayed fracture of medium carbon steels with 1400N/mm2 strength were investigated. Silicon and calcium were added at concentrations of 02.0% and 3070ppm, respectively. The delayed fracture characteristics were evaluated by FIP (Fédération Internationale de la Précontrainte) test which…
Crystallisation of sucrose in the presence of a second ingredient produces microsized crystal agglomerates with awide variety of functional properties
Crystal growth from solution has been investigated by means of in situ observation. Phase-sensitive microscopy or microinterferometry has been employed in order to understand the kinetics of step motion and the effects of flow dynamics on the crystal growth. Both dislocated and dislocation-free crystal were used as th…
The structures of Mg3Al2Si3O12 and Ca3Al2Si3O12 glasses were investigated by means of the radial distribution function (RDF) analysis based on X-ray diffraction data. The Al and Si atoms in these glasses are essentially in four-fold coordination. The T–O (T=A1 and Si) distance of Mg3Al2Si3O12 glass (1.68Å) estimated f…
The structure of this high nuclearity gold cluster has been determined from a single microcrystal of dimensions 10 × 10 × 30 µm (the X-ray diffraction data were recorded with synchrotron radiation using an Enraf-Nonius area detector diffractometer at Daresbury Laboratory); in the cluster three trigonal bipyramidal Au5…
The composition and p roperti es of boron nitride coatings are described. They can be used to coat and protect metallic and ceramic components used at elevated temperatures. For this purpose, the propert ies of boron nitride as well as the demands placed on starting materials in the producti on of such coatings are di…
Redox data are currently available for each of the pairs Fe 2+ /Fe 3+ , Cr 3+ /Cr 6+ , As 3+ /As 5+ , Sn 2+ /Sn 4+ , Ce 3+ /Ce 4+ and Cu + /Cu 2+ , in equilibrium with oxygen as oxide(-II) and O 2 , for alkali and alkaline earth silicate melts at 1400°C in air atmosphere. For each redox pair, there exists an almost li…
Article Hydride Formation in Mg/Ni-Sandwiches Studied by Hydrogen Profiling and Volumetric Measurements* was published on January 1, 1993 in the journal Zeitschrift für Physikalische Chemie (volume 181, issue 1-2).
Dissolution behavior of the barrier layer of porous anodic films formed on aluminum after immersion in sulfuric acid has been studied using re-anodizing (pore-filling) technique. The higher a forming voltage is, the higher the dissolution rate of a film. The barrier layer of films formed in phosphoric acid was divided…
Electrochemical and electrophysical methods are used for optimizing anodic oxide films as passivating layers for electronic devices. Under certain conditions the electrophysical properties of thermally and anodically grown films are practically identical. For several years such anodic oxide films have been applied for…
Previous work has shown that guest-host ferroelectric systems incorporating dichroically absorbing dyes are suitable for use in colour display applications. These utilize either the dichroic absorption of a conventional dye, or the emission of a fluorescent dye. We present here the electrooptical properties of several…
The crystal structures of [Cu2(bdpdz)Br4]·2CH3CN 1, [Cu2(bdpdz)Cl3(H2O)]Cl·3.5H2O 2 and [Cu2(bdpdz)2][ClO4]43 were determined by X-ray analysis, where bdpdz, represents the binucleating ligand 3,6-bis(di-2-pyridylmethyl)pyridazine, formed by the reaction of 3,6-dichloropyridazine and di-2-pyridylmethyllithium. Compoun…
Abstract Fission gas behavior of UO2 fuel pellets with controlled microstructure irradiated to 23 GWd/t in a test reactor has been studied by using a postirradiation annealing experiment. Four types of fuel pellets with or without additives were examined : (1) un-doped standard (grain size: 16/μm), (2) un-doped large…
Abstract A series of photochromic 6′-nitro-3-octadecylspirobenzoselenazolinobenzopyrans have been newly prepared and their solution structures of the colored form have been confirmed as 3-octadecylbenzoselenazolenium-2-trans-1′-cis-(5′-nitrostyryl-2′-oxide) by selective partial deuteration and NMR techniques. Photochr…
The binding free energy difference for the Gly-169-->Ala-169 (G169A) mutation in subtilism BPN' complexed with a tripeptide substrate analogue is explored using the thermodynamic integration approach. The structure of the mutant enzyme-substrate complex obtained from free energy simulation is in good agreement with ex…
A two-dimensional model of the mechanical properties of textiles is constructed, and the relations between model parameters and model behaviour are studied. The influence of the number of bonding sites in the model on stress-strain curves, on the CPU time consumption, and on the stability of model outputs is described…
A one-dimensional constitutive model for the thermomechanical behavior of shape memory alloys is developed based on previous work by Liang and Tanaka. An internal variable approach is used to derive a comprehensive constitutive law for shape memory alloy materials from first principles without the assumption of consta…
Factors determining the magnitude of critical current density, at which Zn began to deposit from impurityfree electrowinning bath, were studied on the basis of extra-overpotentials peculiar to hydrogen evolution. Electrochemical condition, which permitted codeposition of electrochemically less noble Zn with more noble…
Clothing pressures were measured in relation to the covered area at the waist for waistnipper and waistband at a reduction rate of 2.5%. A sensory test was carried out on subjects in relation to the clothing pressure. Clothing pressures at the waist line (W. L) for the waistband, for which the area covered at the wais…
An in situ Fourier-transform infrared study is presented for the spectral region from 250 to 1400 cm–1. Using supported samples the changes for the infrared-active lattice modes after protonation are studied for zeolites A, X, L, ZK-5, mordenite and for zeolites Y with Si : Al ratios from 2.4 to 40.Protonation of the…