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Description The papers in the Symposium on Metal Corrosion in the Atmosphere were given at the 70th Annual Meeting of the Society held at Boston, Mass., 25-30 June 1967. W. H. Ailor, Jr., Reynolds Metal Corp., and S. K. Coburn, U.S. Steel Corp., were the co-chairmen of this symposium sponsored by Committee G-1 on Corr…
The Symposium on Applications Related Phenomena in Titanium Alloys was presented 18-19 April 1967 in Los Angeles, Calif. ASTM Committee B10 on Reactive and Refractory Metals and Alloys sponsored the symposium. Hans Conrad, University of Kentucky, was the
The preparation and spectral and magnetic properties are reported for complexes of cobalt(II), nickel(II), and copper(II) with 2-methylimidazole (Mlz). The complexes (Mlz)2CoX2(X = Cl, Br, or I), (Mlz)2NiX2(X = Br or I), and (Mlz)2CuX2(X = Cl or Br) have tetrahedral structures whereas (Mlz)2NiCl2 has a polymeric octah…
Mössbauer spectra of compounds having the general formulae bis(1, 2-cyclohexanedione dioxime) iron (II) XY and phthalocyanineiron(II)(Z)2, where X, Y, Z represent ligands at the axial positions, have been measured at 77°K and in some cases at room temperature. The spectra consist of quadrupole-split doublets, from whi…
Abstract The spectrum of the fundamental absorption and reflection of n‐type InSe single crystals is studied in the energy region 1 to 5 eV and in the temperature range 293 to 90 ° K. In the spectrum an absorption is observed which may be related to direct and indicrect interband transitions. The main parameters chara…
The preparation and magnetic susceptibilities over the temperature range 80–300°K of eighteen iron(III)–Schiff base chloro- or bromo-complexes are reported. The complexes fall into two groups, uninuclear and binuclear. The magnetic data for the binuclear complexes have been interpreted by use of the dipolar coupling a…
Potentiodynamic polarization experiments were performed in 0.1 N hydrochloric acid and in 1 N sodium chloride with austenitic alloys containing 18 to 20% Cr, 13 to 39% Ni, 0 to 5% Mo, and balance Fe. The pitting potentials varied consistently with alloy content and correlated well with the results of exposure tests in…
The two long mean-lives observed for positron annihilation in some powders (Al2O3, MgO, SiO2) result from ortho-positronium formation. The longest mean-life corresponds to the triplet-state part that annihilates between the powders grains. Under vacuum, this annihilation is free and one observes the free triplet mean-…
Studies of the nitrogen, deuteron and proton relaxation rates of liquid acetonitrile at various temperatures were carried out by pulsed N.M.R. techniques. Re-orientation of the methyl group about its symmetry axis is found to be approximately ten times faster than the re-orientation of the nitrile group. Analysis of t…
This paper supplements the preceding paper by Maradudin and Vosko on the same subject. Extensions and additions include discussions of (1) the group of the bond, (2) tabulations of the time-reversal invariance criterion, (3) the labeling of experimental dispersion curves, (4) compatibility relations, (5) accidental de…
This paper reviews the extensive work pertaining to the creation of colour centres in alkali halides. After a brief historical survey the various mechanisms put forth to account for defect creation are examined in turn and the experimental evidence which supports or belies each of these is presented. After demonstrati…
Abstract The differences between compounds of carbon and of silicon are discussed, and the role of silicon as a fundamental structural component in inanimate nature is described. Starting with silicic acid and silicates, the structure and properties of the silicones and of compounds having SiCSi skeletons are descri…
G. Agnès, G. P. Chiusoli and G. Cometti, Chem. Commun. (London), 1968, 1515a DOI: 10.1039/C1968001515A
The kinetics of the reaction were determined on single crystal specimens by a gravimetric technique in the temperature range from 1000° to 1120°C at water vapor partial pressures from 1 to 20 Torr. Paralinear rate behavior was observed; i.e. , the reaction rate, which is initially parabolic, eventually becomes linear.…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTInhibition of the thermal decomposition of ammonium nitrateGeorge H. Madany and George. BurnetCite this: J. Agric. Food Chem. 1968, 16, 1, 136–141Publication Date (Print):January 1, 1968Publication History Published online1 May 2002Published inissue 1 January 1968https://pub…
Abstract Festkörper liegen bei Zimmertemperatur im allgemeinen nicht im thermodynamischen Gleichgewicht vor. Dies gilt sowohl im Hinblick auf die thermische Fehlordnung als auch im Hinblick auf die von der Komponentenaktivität abhängigen Konzentrationen der Punktfehlstellen. Bei Änderung einer unabhängigen thermodynam…
A new method for the preparation of manganese violet is reported and the formula confirmed as manganese(III) ammonium pyrophosphate by wet analysis, X-ray powder diffraction, infrared spectroscopy, thin-layer chromatography, and magnetic measurements. The thermal decomposition has been studied and thermogravimetric cu…
Die fossilen Diatomeen aus dem Villafranchien bei Senèze (Haute- Loire) wurden bei einer Bohrung durch den Boden des alten Kratersees hindurch untersucht. 110 Meter ton-sandiger diatomeenführender Sedimente enthalten eine Süsswasserflora die aus 107 Arten und Varietäten besteht ; 5 Formen sind neu und sie werden in di…
Abstract The isotopic exchange of P 32 and Ca 45 with hydroxyapatite was studied along its solubility isotherm. The solution was in a chemical equilibrium with the solid, thus, only isotopic exchange reactions took place in the system. Isotopic dilutions during the exchange process enabled the measurement of a compart…
When a mixture of chloride or sulfate salts of cesium and dysprosium in a 3:1 mole ratio was treated with fluorine gas at 10-60 psig and 200°-350°C, the white Dy(III) starting material was converted to an orange compound with an empirical formula approaching Cs3DyF7. Fluorescence and infrared absorption spectra of flu…