Materials Literature
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Article Der Einfluß mechanischer Zwillingsbildung auf die Entstehung der Walztexturen kubisch Hlächenzentrierter Metalle was published on February 1, 1963 in the journal International Journal of Materials Research (volume 54, issue 2).
Abstract An order of magnitude calculation is made to determine the activation energies involved in the recrystallization of serpentine to forsterite. The so-called “activation energy spectrum” showing the proportion of material with different activation energies is estimated.
Abstract Particle size distributions in samples of Belle Fourche, Wyoming, Aberdeen, Utah, and Cheto bentonite were obtained by a centrifugation technique. From these distributions and the clay density the number of particles per gram was calculated for the different samples. Then the clays were mixed in different pro…
Almost all of the fibre tip present (about 3% by weight) in a batch of scoured wool was removed during processing to cloth : 70% was removed by the card, 16% by the Noble comb, and the remainder appeared as fly or droppings during drawing, spinning, and weaving.
The resonance absorption of the incident light in thin metal films, which is to be considered as an example of the so-called plasma resonance, is studied. This absorption is caused by the mechanism proposed by Ferrell, namely, by the excitation of surface (bounded) plasmons by light and therefore corresponds to an inv…
With so few accidents in the Atomic Energy Industry, new concepts and procedures of interest to the Health Physics profession will result from a critical analysis of each major radiation accident. A brief description of the reactor, its purpose, and operating history prior to the accident is followed by a comprehensiv…
The transformation of quartz at 1560°C was investigated by X‐ray techniques. The effect of particle size (and grinding) on the integrated peak intensities of the quartz powders was evaluated. The formation of a so‐called nonquartz layer of preferably nonquartz phase on quartz crystals was encountered after 5 hours of…
Abstract A study of the surface morphology of vermiculites from several different sources by the electron microscope has indicated that, unlike the smooth surfaces of micas, the vermiculite surfaces show micromorphological structural variations such as small humps, prominent crystallographic steps on the basal cleavag…
A résumé of the methods of production of non-woven (bonded fibre) fabrics is given. Measurements of the following physical properties have been carried out on a range of commercially available parallel-laid, cross-laid, random-laid, composite, and perforated non-woven fabrics: weight, thickness and density; tensile st…
pseudomalachite, Cus(P04)~(0H)4 is monoelinic, space group P21/c, with ao=4"47, b0=5"75, c0=17.08A; fl=91 07'.
The Zeeman splitting for Cl 35 quadrupole resonance in a single crystal Ba(ClO 3 ) 2 ·H 2 O in a high magnetic field (about 6000 oe) was studied in detail by using the proton signal enhancement due to a crossing of the quadrupole resonance frequencies of chlorine nuclei and the magnetic resonance frequencies of proton…
Abstract Single crystal X-ray and electron diffraction studies were carried out to examine the thermal transformation sequences of pyrophyllite and talc, respectively. The results showed that both minerals transformed topotactically. No dehydroxylated talc phase was observed, while an anhydride of pyrophyllite was obt…
Abstract Observations on the x‐ray scattering by ball‐milled cellulose and cellulose derivatives, amorphous oligosaccharides, and Fortisan H are reported and an approximate shape is established for the scattering curve of the noncrystalline component of celluloses. Using this shape measurements have been made of the m…
Abstract Mineralogical and chemical properties of Madison soil derived from quartz mica schist reflected the degree of weathering. The Madison soil had sandy surface horizons and clayey B horizons. The clay in surface horizons contained more mica than clay in the subsoils; a maximum of about 40 per cent mica in the co…
Abstract Dehydration and recrystallization reactions of fine and coarse powders and also of massive samples of serpentine under isothermal heating conditions in air are followed by thermobalance measurements and by X-ray diffraction intensities. The rate of recrystallization to forsterite is shown to have an inverse r…
Abstract High-alumina minerals refer, in this paper, to Al-rich, normal sedimentary phases, including gibbsite, boehmite, diaspore, possibly “proto-diaspore” and “proto-alunite”, “Al-chlorite”, and corundum, in association with kaolin minerals. They may be derived from any common Al-containing rock. Processes of origi…
Abstract As an approach to reviewing the surface properties of alumino-silicates, this paper considers the relationships between constitution hydroxyls, surface hydroxyls, chemisorbed and physically adsorbed water molecules and exchangeable cations. One of the main characteristics of clay minerals is, indeed, the deve…
The stability of the vitreous state in the lithium metasilicate region of the system Li 2 O–Al 2 O 3 –SiO 2 was found to be a function of the concentration of lithia. The higher the lithia content, the less stable was the glass. The devitrification of glasses in this system was studied. In addition to the phases prese…
The Green function for an infinite medium with strong small-scale fluctuations of the refractive index is determined. The solution is derived in manner similar to the renormalization method in field theory. An expression for the effective refractive index of the medium and attenuation coefficient is deduced. (auth)
Abstract A study has been made of the effect of concentration of the crosslinking agent, gelatin concentration, and pH on the rate of increase of viscosity with time, for gelatin solutions containing either formaldehyde or glyoxal. The results are consistent with the kinetic relationship: For formaldehyde, n is 2. For…