Materials Literature
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Transgranular stress corrosion cracking of 18–8 Type 304 specimens in boiling 42% does not depend on rate of stressing (<1 sec to 10 min) nor on small variations in degree of plastic deformation. Cold worked specimens fail in shorter times than annealed, sheared specimens. Addition of to decreases cracking time wherea…
This paper is the first of a series which will deal with torque in textile systems. It is concerned principally with the analysis of torque developed in twisted singles yarns as created by (a) fiber bending, ( b ) fiber torsion, and (c) bending and torsion in com bination. Equations are developed, using elastic theory…
W. P. Griffith, J. Lewis and G. Wilkinson, J. Chem. Soc., 1958, 3993 DOI: 10.1039/JR9580003993
Abstract Lamellae of pure liquid and low‐molecular solutions are unstable because of the absence of a limiting thickness. Rapid collapse of these lamellae may start at relatively large thickness (∼ 500 Å) under influence of the London‐van der Waals attractive forces. Small quantities of surface active ions will preven…
For a long time there has been some interest in obtaining spherical harmonics with the symmetry of the regular polyhedrons, particularly for electrostatic problema involving polyhedral conductors. Work on the icosahedral group has been done, among others, by Meyer (7), Laporte (6), Hodgkinson (3) and Poole (8), apart…
R. L. Martin and A. Whitley, J. Chem. Soc., 1958, 1394 DOI: 10.1039/JR9580001394
Abstract A technique is described for quantitatively examining the diffraction pattern of polydimethylsiloxane at and below room temperature with the x‐ray diffractometer. The crystalline fraction of the unstretched material is determined by the classical method developed for natural rubber. In the case of the stretch…
Abstract High‐speed cinematography of collapsing lamellae of an aqueous Tee‐pol solution reveals that spontaneous rupture always takes place in the thinnest part of the lamella. The rate of hole expansion is dependent on the thickness of the lamella; its value is found to be in the order of some hundreds of cms per se…
M. Fleischmann and M. Liler, Trans. Faraday Soc., 1958, 54, 1370 DOI: 10.1039/TF9585401370
The diffusion of oxygen in zirconium and dilute zirconium alloys has been studied in the temperature range of 400° to 5857deg;C by observing the rates of dissolution of anodically deposited interference oxide films. The diffusion coefficient of oxygen in zirconium depends on the grain orientation and varies by a facto…
The corrosion of pure iron in 1 N HC 1 is discussed in terms of the theory of mixed potentials and the theory is applied to inhibition by organic compounds. Corrosion rates with and without inhibition by aniline, several aniline derivatives, and alkylamines were determined by cathodic polarization measurements as well…
The first page of this article is displayed as the abstract.
Unter Energietransport in einem physikalischen System versteht man die Erscheinung, daß die Energie an einer anderen Stelle des Systems, als da wo sie absorbiert wurde, wieder auftritt. In den meisten Fällen ist die absorbierte Energie elektromagnetische Strahlung, während die transportierte Energie sich auf verschied…
THE IMMERSED STRENGTH AND AIR-DRY STRENGTH OF AN IOWA SILTY LOAM TREATED WITH LARGE ORGANIC CATIONIC MATERIALS CAN BE INCREASED BY THE ADDITION OF VARIOUS POLYACIDS. THIS INCREASE IS APPARENTLY DUE PRIMARILY TO AN IONIC ABSORPTION COMPLEX IN WHICH THE POLYACIDS BOND BETWEEN LARGE ORGANIC CATIONS COATING THE MINERAL SU…
Abstract The synthesis of hexabenz‐1,12;2,3;4,5;6,7;8,9;10,11‐coronene, using two different reaction schemes is described. The cyclodehydrogenation of hexaphenylbenzene, and the reaction of dibenz‐1,9;2,3‐anthrone with Zn/ZnCl 2 lead to identical products, the chemical and crystallographic properties of which demonstr…
The intrinsic optical absorption spectrum of PbS crystals has been measured. The absorption coefficients range from about 10 ${\mathrm{cm}}^{\ensuremath{-}1}$ to ${10}^{5}$ ${\mathrm{cm}}^{\ensuremath{-}1}$ giving continuous data through the band edge. At 300\ifmmode^\circ\else\textdegree\fi{}K the data indicate a dir…
Scale formed upon molybdenum consists of either two or three oxide layers., depending upon temperature and time. The outermost layer is the volatile MoO3. The inner layers of oxide have a composition very close to MoO2 but do not exhibit an X-ray pattern corresponding to MoO2. The rate of evaporation of MoO3 and the m…
The effect of current density, p H, and temperature on the anodic behavior, cathodic behavior, and corrosion of magnesium in aqueous solutions has been studied. A tentative mechanism for the anodic oxidation of magnesium is postulated. Local corrosion and/or undermining of metallic magnesium at the anode are appreciab…
The re-examination of the crystal structure of α-hexagonal BaAl2Si2O8 has revealed that the true symmetry of the crystal is lower than hexagonal-possibly, orthorhombic with a body centered lattice of dimensions: a=5.293, b=9.168 and c=7.79×2Å, and the crystals invariably occur in a trilling form made up by three ortho…
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