Materials Literature
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Views Icon Views Article contents Figures & tables Video Audio Supplementary Data Peer Review Share Icon Share Twitter Facebook Reddit LinkedIn Tools Icon Tools Reprints and Permissions Cite Icon Cite Search Site Citation R. Wolfe, G. E. Smith; EFFECTS OF A MAGNETIC FIELD ON THE THERMOELECTRIC PROPERTIES OF A BISMUTH‐…
Abstract Es wird über die Darstellung ternärer Oxide des Niobs und Tantals vom Typ ABO 4 mit Fergusonit‐, Wolframit‐, Stiblotantalit‐ und Rutilstruktur berichtet. In der Fergusonitstruktur kristallisieren LaNbO 4 , YNbO 4 , sämtliche Niobate der Seltenen Erden, YTaO 4 sowie die Tantalate der Seltenen Erden von Nd–Er.…
Technical Briefs On the Singular Character of Thermal Stresses Near a Crack Tip G. C. Sih G. C. Sih Lehigh University, Bethlehem, Pa. Search for other works by this author on: This Site PubMed Google Scholar Author and Article Information G. C. Sih Lehigh University, Bethlehem, Pa. J. Appl. Mech. Sep 1962, 29(3): 587-…
The self-diffusion coefficient of aluminum has been determined in polycrystalline aluminum oxide over the range 1670° to 1905°C. Diffusion couples were employed using aluminum-26 in oxide form as a radioactive tracer. In the temperature range studied, experimental data can be represented by D = 28 exp {—[(114 000±15 0…
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It has been found, using thin film electron microscopy, that aluminium 3.5 and 7.3 atomic per cent magnesium alloys quenched into silicone oil contain concentric diamond-shaped dislocation loops lying upon the cube planes. An examination of the various dislocation interactions which occur together with the electron di…
Treating the glass temperature TG of polymers as an iso-free volume state allows one to derive the result (αL—αG). TG=K1, a constant; or the approximate result αLTG=K2, another constant. The α's are the coefficients of cubical expansion for 100% amorphous polymer above and below TG. K1 is 0.113 for a wide variety of p…
The relative turgidity technique consists in comparing the initial and turgid water contents, on a percentage basis, of disks punched from leaves, the turgid water content being obtained by floating the disks on water.
Abstract Die kristalline Textur des isotaktischen Polypropylens ist für seine Anwendung im Bereich der synthetischen Filme und Fasern von Bedeutung. Die Erzielung einer smektischen Struktur hat sich für die Herstellung von nicht orientierten Filmen mit guten optischen Eigenschaften und von Fasern mit hoher Bruchfestig…
Abstract The two-beam dynamical theory of electron diffraction in absorbing crystals has been applied to explain features of bend and thickness extinction contours and of images of stacking faults observed on transmission electron micrographs of metal foils. Inelastic scattering processes affect the intensities of the…
The internal charge distribution of the carnauba wax electret has been determined by a sectioning method: After polarization and cooling samples are cut into sections of different thickness. These are reheated and the ensuing discharge currents are measured. The total released charge, as determined by numerical integr…
X-ray irradiation of glass with the weight percent composition 75% SiO2, 25% Na2O produces color centers which absorb visible light. Cerium in the glass prevents the formation of these centers. The nature of the centers and the mechanism by which cerium prevents their formation are studied by measuring the optical abs…
Abstract Die im Röntgenkleinwinkeldiagramm von verstrecktem Polyäthylen auftretenden Meridian‐ Interferenzen werden durch eine nahezu periodische Anordnung von kristallinen und fehlgeordneten Bereichen hervorgerufen. Die durch den mittleren Abstand zweier aufeinanderfolgender Kristallite definierte Langperiode hängt v…
Abstract Die Ausarbeitung einer technischen Synthese von 11‐Aminoundecansäure hat zur Aufnahme des Polyamids 11 – unter der Bezeichnung Rilsan – in die Reihe der handelsüblichen Polyamide geführt. Die Eigenschaften des Rilsans leiten sich aus der Struktur seines Grundbausteines ab: Im Rilsan sind die Carbonamidgruppen…