Materials Literature
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In order to investigate the relationship between the impact and static bending behaviors at low temperatures for molybdenum having different grain structures and different grain boundary strengths, the impact and static bend tests were performed for miniaturized specimens of five kinds of molybdenum. The pure molybden…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPhotodecomposition and Regeneration of PbI2 Nanometer-Sized Particles, Embedded in Porous Silica FilmsE. Lifshitz, M. Yassen, L. Bykov, I. Dag, and R. ChaimCite this: J. Phys. Chem. 1995, 99, 4, 1245–1250Publication Date (Print):January 1, 1995Publication History Published o…
o-phenylenediamine (o-PD) was electropolymerized on glassy carbon electrodes under a potential cycling condition. \nThe resulting polymer films mediated electrons for the reduction of molecular oxygen at pH=1.0. It was found from \nthe RDE, RRDE, and cyclic voltammetry experiments that the modified electrode…
We have discussed the rule by which the predominant cold deformation modes of metastable β phase are governed depending on their chemical compositions through the examinations of the effects of Sn, Al, and Zr on β-quenched and slightly cold rolled microstructures in a Ti-V based alloy system. It seems in Ti-V binary a…
Ewald's method of accelerated convergence [Ewald (1921). Ann. Phys. (Leipzig), 64, 253–287] is generalized to calculate the electrostatic potential of a crystal in which the atoms have overlapping spherical densities. The algorithm is applied to the cubic NaF crystal. The potentials at the Na and F nuclei are calculat…
We have applied the spin dynamics technique to conducting polymers, in particular, with the ESR method, and investigated microscopic transport properties in a quasi-one-dimensional (Q1D) polymer chain. This technique is a unique method for obtaining microscopic information on intrinsic transport properties, because ma…
Stochastic models have been developed for the simulation of grain structure formation during the solidification of metallic alloys. Nucleation is assumed to occur randomly in space according to a prescribed distribution of nucleation sites. For dendritic alloys, the hypothesis of a random orientation of the ‹100› crys…
Sexual reproduction and protoplast structure are used to check the classification of the naviculoid genus Placoneis Mereschkowsky (Bacillariophyta). The gametangia are closely associated within a robust mucilage capsule throughout auxosporulation, and pairing is ± random with respect to asymmetries of the frustule and…
Lateral substitution in the peripheral phenyl groups of the triphenylen-2,3,6,7,10,11-hexayl hexakis(4-alkoxybenzoate)s was investigated via substitution of methyl, ethyl, isopropyl and tert-butyl groups ortho to either the peripheral alkoxy chain or the internal ester linking group. The discotic mesogenic compounds w…
A novel self-doped polymer having aikylphosphonic acid moieties on polyaniline is synthesized from persulfate oxidative coupling of O-aminobenzylphosphonic acid 3; the resulting polymer, apart from being water soluble in its self-doped monosodium salt form, demonstrates excellent redox stability when subjected to pote…
The 76 displacement cascades in Ni3Al at 100 K simulated in part I have been analysed to investigate the influence of the energy E p of the primary knock-on atom on the kinetics of defect production, the degree of disorder and the atomic mixing of the different atomic species. The Ni atoms are more readily displaced d…
SUMMARYThe corrosion behaviour of a wide range of zinc and zinc alloy coated steels, in wood preservative solutions and timber environments, has been investigated using electrochemical measurements. For rapid evaluation of corrosion performance, the corrosion tests were carried out on specimens immersed in copper/chro…
Angular dependent magnetic Barkhausen noise (MBN) measurements were performed on three pipeline steel samples under uniaxial tensile stress up to 260 MPa. An expression for the angular dependent strain given by /spl delta/L/L/spl ap//spl Delta/L/L(1+/spl nu/)sin/sup 2//spl theta/, where /spl theta/ is the angle of the…
The properties and catalytic behaviour of adsorbed oxygen species on alumina-supported cerium oxides (CeO2, CeAlO3 and CeO2 –x) for methane oxidation have been investigated by means of EPR, FTIR, temperature-programmed desorption (TPD) and 18O tracer techniques. The adsorbed oxygen on the cerium oxide catalysts was fo…
Cobalt has been known as an element to increase the Curie temperature but to decrease the coercivity of (Nd,Dy)FeB magnets. Because of this negative effect, various elements have been added to increase the coercivity but at the expense of remanence and/or Curie temperature. The combined addition of cobalt and small am…
In a companion paper, computer programs are proposed for automating the analysis of sudden-short-circuit oscillograms in accordance with present IEC and IEEE standards. In this paper, we further illustrate the capabilities of computer-aided graphical methods with a view to their incorporation into modern testing pract…
Koninginin E, a congener of previously isolated Koninginins A, B, and C, was isolated from Trichoderma koningii fermented on a shredded wheat medium. Selective supercritical fluid extraction was used in the rapid isolation of this otherwise intractable compound. Koninginin E inhibited the growth of etiolated wheat col…
Abstract Amine‐terminated poly(dimethylsiloxanes) (ATPDMS) were used to improve the toughness of a cresol‐formaldehyde novolac epoxy resin cured with a phenolic novolac resin for electronic encapsulation application. The effect of molecular weight of amine‐terminated polysiloxanes on the phase separation of the result…
The first diazabutadiene (DAB) derivative of an actinide metal is characterised by X-ray crystallography and EPR spectroscopy; a comparison of its electrochemistry with that of other DAB complexes suggests a predominantly localised bonding mode.
Duplex stainless steel base material was welded using gas tungsten arc welding with an Ar-10%H2 shielding gas and laboratory-made filler wires were employed to deposit duplex and fully ferritic weld metals having different nitrogen contents. Weld metal slow extension rate tensile (WM-SERT) testing was used to examine…