Materials Literature
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Small-angle scattering (SAS) of neutrons is applied to the investigation of the microinhomogeneous structure of glasses. The alumina–silica titania-containing systems are taken as the subject of the investigation. The negative sign of the Ti nuclear scattering amplitude sharply extends the sensitivity to fluctuations…
The literature dealing with the high-temperature behavior of inorganic oxygen-containing salts of chlorine, bromine and iodine has been critically reviewed. Values of (GTo−H298o)/T of the reactants and products of the decomposition reactions were calculated and have been tabulated from 298 K up to as high a temperatur…
Dependence of the glass-transition temperature, Tg, on polymer chain flexibility predicted by the Gibbs-DiMarzio theory was empirically tested by studying the relationship between Tg and the stiffness parameter for isolated chains, [sgrave]. It was found that [sgrave] is not a single variable controlling Tg for differ…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTThe Storage of Hydrogen as Metal HydridesDaniel L. Cummings and Gary J. PowersCite this: Ind. Eng. Chem. Process Des. Dev. 1974, 13, 2, 182–192Publication Date (Print):April 1, 1974Publication History Published online1 May 2002Published inissue 1 April 1974https://pubs.acs.o…
In order to study the effect of grain size on void formation during high-energy electron irradiations, the steady-state point defect concentration and vacancy supersaturation profiles have been calculated for three-dimensional spherical grains up to three microns in size. In the calculations of vacancy supersaturation…
Abstract The spin–spin relaxation time T 2 and the fraction of short T 2 component for composites of natural rubber with carbon black prepared under various conditions have been measured by pulsed NMR. Effect of swelling with a solvent (CCl 4 ), carbon black species (SAF, HAF, SRF) with different surface areas, and di…
We present measurements and analysis of the magnetic properties of the degenerate magnetic semiconductor ${(\mathrm{GeTe})}_{1\ensuremath{-}x}{(\mathrm{MnTe})}_{x}$ for $0<x<0.5$. The measurements were made in fields of up to 55 kOe over the temperature range 1-350 \ifmmode^\circ\else\textdegree\fi{}K. The resul…
The 630-nm loss band recently identified in unclad fibers made from low-OH-content vitreous silica is shown to be introduced in the fiber-drawing process. The band has an absorptive component as well as resonance fluorescence whose peak intensity amounts to about 16% of the total losses. A red fluorescence was observe…
This paper is concerned with magneto-optical properties of EuO single crystals, doped with up to 5-at.% Gd. The optical absorption and the Faraday rotation have been measured above and below the magnetic-ordering temperatures and in various magnetic fields. In addition the reflectivity between 13 eV and 250 \ensuremat…
Abstract Apparatus has been developed for studying the development of crystallinity and orientation during the melt spinning of synthetic fibers. Tension in the fiber and temperature, diameter, and x‐ray diffraction patterns are measured as a function of distance from the spinneret for a running monofilament. Measurem…
In order to get an idea of the possible neutron small-angle scattering experiments with solutions of macromolecules at the high-flux reactor of the Institut Max von Laue–Paul Langevin at Grenoble, aqueous solutions of molecules with molecular weights from about one hundred to several millions have been studied. Changi…
The crystal structure of KTiPO 5 , determined by a simultaneous use of the tangent-formula method and the Patterson method, is described in space group Pn 2 1 a . Lattice constants are: a = 12.814 Å, b = 10.616 Å, c = 6.404 Å. This compound is a monophosphate whose chemical formula must be written KTiOPO 4 . Distorted…
The use of synchrotron radiation as an intense X-ray source for biological diffraction has only very recently been promoted into a long-term experimental programme. Here we report on some general and some detailed aspects of this development. In the case of small-angle studies on weakly scattering specimens at high ti…
Abstract From polarized reflection spectra of TEA(TCNQ) 2 single crystals at room temperature, quantitative values of the complex dielectric function ε(ω) and the optical conductivity σ(ω) in the range from the far infrared to the ultraviolet have been derived. The polarization of the vibrational bands almost exclusiv…
A survey, comparison, and critical analysis is presented of data compiled from the scientific literature concerning diffusion in copper-silver and copper-gold systems. Here the term ``copper alloy system'' is interpreted in the broadest sense. For example, the review of diffusion in the Cu-M system reports all diffusi…
(1974). A Proposed Standard Procedure for Static Muscle Strength Testing. American Industrial Hygiene Association Journal: Vol. 35, No. 4, pp. 201-206.
Abstract In the presence of maleic anhydride‐grafted polypropylene, marked dispersibility of the polymer blend of isotactic polypropylene and nylon 6 was obtained. This appeared to be caused by the formation of a certain graft polymer between maleic anhydride in polypropylene and terminal amino groups of nylon 6. The…
(The Nature of Polymer Glasses, Their Packing Density and Mechanical Behaviour).- The Nature of Polymeric Glasses.- The common glassy polymers.- The softening of polymer glasses.- Polymer melts and rubbers.- The crystallisation of polymers.- Amorphous isotactic polymers.- The morphology of amorphous polymers.- Packing…
Questions associated with the magnetic susceptibility of the d-band transition metals that are not magnetically ordered, i.e., that are neither ferromagnets nor antiferromagnets, are reviewed. The principal components of the magnetic susceptibility of the transition metals are discussed, theoretical estimates of these…
A series of experiments were carried out on growing depth hoar in our laboratory and observations made on depth hoar in a natural snow cover.Depth hoar crystals grew in snow when the snow was subjected to a consistent negative temperature gradient for a considerably long p3riod.Depth hoar crystals were classified into…