Materials Literature
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A modeling approach for multifilament melt spinning of poly(ethylene terephthalate) fibers is outlined. The complex interactions between the filament bundle geometry and the quench conditions are likely to play a critical role in controlling spun fiber properties and their variability. Numerical results for typical co…
Hydrogen evolution from 60Co γ- and 3H β-irradiated molecular sieve 5A adsorbing HTO was measured. The results showed an additional evolution of H2(HT) gas due to energy transfer from molecular sieve to adsorbed water in both γ- and β-irradiations, and the yield at a given irradiation dose was higher than that from ra…
It is generally accepted that the onset and stable growth of edge delaminations under quasi-static loading can be characterized using the strain energy release rate G and delamination resistance curves (R curves). This study addresses the problem of edge delamination growth under fatigue loading. To characterize the f…
In this paper, an improved and simple self-consistent effective-medium theory is developed. The effect of dispersed second phase particle on the ionic conduction of ionic conductors is discussed by the theory. It is found that the theoretical result is consistent with experiments. The theory can perdict the effect of…
The study of superficial cracks of shot peened surfaces in terms of coverage rate, material nature and ball diameter shows the relation between cracks and dynamic behaviour of the sample surface during the impact. The shot peened layers are not deformed quickly enough under the shock.For the different shot peened stee…
Article Light Scattering Investigations of the Structure and Dynamics in Liquid-like Ordered Colloidal Suspensions* was published on January 1, 1987 in the journal Zeitschrift für Physikalische Chemie (volume 153, issue 1-2).
Two structures of the Werner complex [Ni(NCS)2(4Et-py)4](4Et-py = 4-ethylpyridine) in its non-porous α phase and the structures of its clathrates with p-, m-, and o-xylene, carbon disulphide, and carbon tetrachloride as the guest molecules have been elucidated. In all the structures the host molecules have octahedral…
After an introduction to what is required of a high-performance permanent magnet material, a brief description is given of the Concerted European Action on Magnets, a unique cooperative research programme which involves more than fifty participants (a third of them industrial) from nine countries in the EEC. There fol…
Benzocrown ethers carrying a para-substituted biphenyl group, (1a–c and 2a,b), display a nematic liquid crystal phase; selective complexation with picrates in the liquid crystal phase was observed by doping experiments.
The in vitro antiplatelet aggregating activity of magnesium and magnesium associated with soluble citroflavonoids (hesperidin and eriodictin, 1:1) is well-established. The degree of inhibition of in vitro platelet aggregation activity produced by different concentrations of magnesium halogenates was determined. ADP (4…
Following an earlier paper, the equilibrium of an axisymmetric sessile drop resting on a thin, elastic plate has been considered using the minimum free energy hypothesis. A consequence is that although Young's equation is still obeyed at the triple line when considering the true contact angle, the apparent contact ang…
The kinetics of the nitrogen reaction with liquid Fe-C alloys was investigated by using the isotope exchange technique. The effect of small amounts of S, P, Pb, Sn, Bi and Te in Fe-Csat, alloys on the rate constant of the interfacial nitrogen reaction was studied at 1450°C The rate constant for Fe-Csat.-S alloys was i…
The structure of first-order twin boundaries in Mg-Al spinel has been examined using high-resolution transmission electron microscopy. Comparison of experimental images with computer calculated images of model twin boundaries, obtained using a multislice image simulation program, allow different twin structures to be…
A range of surface treatments including degreasing, abrasion, chromate etching, plasma etching and nitric-sulfuric acid etching were applied to unreinforced and 20 vol. % glass fiber reinforced polyetheretherketone. Single lap shear adhesive joints were prepared using a nylon-fabric-supported epoxy resin film adhesive…
Experimental data indicate that in the isostructural series the easy axis of the spontaneous magnetisation within the hexagonal plane alternates with the sign of the third Stevens factor. This confirms that the magnetocrystalline anisotropy of the rare-earth ions in the RCo 5 and R 2 Co 17 intermetallics has a single-…
The crystallization of glass/ceramic composite was examined, using borosilicate glass and several kinds of ceramic powders. Most composite systems consisted of borosilicate glass and ceramics formed cristobalite during firing, whereas those specimens that include alumina or aluminum nitride did not form any crystal.Th…
This will be an entirely personal report about the development of a branch of experimental physics more than 50 years ago at the “Physikalisches Institut” of the “Eidgenössische Technische Hochschule”, (ETH) in Zurich. At that time Paul Scherrer—best known for his contribution to the development of the Debye-Scherrer-…
Comparisons are made between experiment and theory for the bremsstrahlung cross-section differential in photon-emission angle and energy for incident electrons of 50, 75, and 100 keV, for target elements of C, Al, Cu, Y, Ag, Te, Tb, Au, Bi, and U for photons radiated at 90\ifmmode^\circ\else\textdegree\fi{}. The prima…
Surface interactions of H2, CO and CO2 with the perovskite-type oxide LaMnO3 have been studied by temperature-programmed desorption (t.p.d.) and i.r. spectroscopy. A t.p.d. desorption peak of H2 at 355–360 K, which increases in intensity with increasing reduction temperature of the oxide (Tr), is assigned to molecular…
The solid state polymorphism of MBBA has been studied and its phase diagram completed. Literature data were analysed and, essentially, neutron scattering results were used to describe the phase situation in MBBA. Transitions between the metastable solid modifications-originating from the fast-cooled glassy state-are c…