The colorimetric determination of anionic surface-active materials in water
D. C. Abbott, Analyst, 1962, 87, 286 DOI: 10.1039/AN9628700286
Materials Literature
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A Solid Electrolyte Fuel Cell
A high‐temperature oxide electrolyte galvanic cell of the type , , O 2 is described. Experimental data for reaction of oxygen with hydrogen‐water and methane‐water mixtures are given. Open‐circuit voltages for the hydrogen‐oxygen reaction are close to theoretical, and current‐voltage curves show that the output of the…
Energy and Entropy of Formation and Motion of Vacancies in NaCl and KCl Crystals
Recent experiments on the dc ionic conductivity of NaCl crystals doped with divalent cation impurities led to a re-evaluation of some of the basic constants for defect formation and motion in these crystals. The key parameter is the energy of motion εm of a cation vacancy. This parameter has been determined from the t…
ORDERING OF THE OCTAHEDRALLY COÖRDINATED CATION POSITION IN THE PEROVSKITE STRUCTURE
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTORDERING OF THE OCTAHEDRALLY COÖRDINATED CATION POSITION IN THE PEROVSKITE STRUCTUREFrancis Galasso and Wilda DarbyCite this: J. Phys. Chem. 1962, 66, 1, 131–132Publication Date (Print):January 1, 1962Publication History Published online1 May 2002Published inissue 1 January…
Statistical investigation of dissociation cross-sections for diatoms
The first page of this article is displayed as the abstract.
Extended jogs in dislocations in face-centred cubic metals
The nature of the minimum energy configuration of jogs of various lengths in dislocations in face-centred cubic metals is studied. It is concluded that long jogs of various types are partially dissociated into intrinsic stacking-fault ribbons on close-packed planes, and that elementary jogs in dislocations in a range…
The radial distribution curves of liquids by diffraction methods
Since the theoretical foundations of radial distribution analysis of liquid diffraction patterns were laid in 1927 by Zernike and Prins, progress in apparatus and experimental techniques has ensured a greater reliability and hence a greater confidence in the method as a means of evaluating the structure of liquids. A…
Polarisation de charge (ou de spin) au voisinage d'une impureté dans un alliage
On calcule la polarisation de charge (ou de spin) induite en un point B dans un alliage au voisinage d'une impureté A en tenant compte de la diffusion des électrons par d'autres impuretés (réparties au hasard) entre A et B. Les applications possibles de ce calcul comprennent : 1) La discussion des facteurs de forme ma…
Reactions among Point Defects in Alkali Halides
Existing knowledge of point defects and their interactions in uncolored alkali halide crystals is briefly reviewed. Attention is drawn to recent experimental and theoretical work which indicates that vacancy pairs are not highly mobile defects. This has important implications for some hypotheses on the kinetics of col…
Work Hardening Characteristics of the Basal Slip of Magnesium Single Crystals
The work hardening characteristics of the basal slip of magnesium have been investigated by tension test at elevated temperatures, from room temperature to 300°C, using crystals of various orientations. The resolved shear stress shear strain curves obtained typically consist of two stages. The first is the well known…
Electrical Properties of Evaporated Aluminum Oxide Films
Insulating films of aluminum oxide have been prepared by evaporation of aluminum in a partial pressure of 10 −3 mm Hg of oxygen. On exposure to air both dielectric constant and dissipation factor increase to values similar to those observed for anodized films on bulk aluminum. The results can be understood if the init…
965. 1,4-Dithiinium radical-cations
E. A. C. Lucken, J. Chem. Soc., 1962, 4963 DOI: 10.1039/JR9620004963
76. Bromo- and iodo-molybdenum(II) compounds
The first page of this article is displayed as the abstract.
Homogeneous and Inhomogeneous Mechanisms in the Dehydroxylation of Minerals
In attempts to postulate dehydroxylation mechanisms for the clay minerals, three assumptions have generally been made: that the elements of water are lost more or less uniformly from all over the crystal, that the tetrahedral parts of the structure are less likely to be disturbed than are the octahedral parts, and tha…
Anodic behaviour of the borohydride ion
J. P. Elder and A. Hickling, Trans. Faraday Soc., 1962, 58, 1852 DOI: 10.1039/TF9625801852
Calcium Carbonate Crystal Forms Formed from Sea Water by Inorganic Processes
This study was made to solve the following questions: (1) Which of the three crystal forms of calcium carbonate (calcite, aragonite and vaterite) is produced most predominantly from sea water by inorganic processes. (2) Which of the chemical constituents of sea water has the greatest influence on the polymorphic forma…
The crystal structure of calcium hydride
Neutron-diffraction patterns of CaH/sub 2/ and CaD/sub 2/ were measured to obtain more information on the positions of the hydrogen atoms. The results are in disagreement with those of Zintl and Harder, and calculations on the basis og a CaH/sub 2/ model were found to agree with the experimental data while those of Zi…
Pressure-Temperature-Composition Relationships of the Yttrium-Hydrogen System
Pressure‐temperature‐composition studies of the yttrium‐hydrogen system were made in the temperature range 900°–1350°C and the pressure range 1–760 mm Hg. The existence of a yttrium‐solid‐solution phase and a yttrium‐hydride phase, which approaches in composition, was established. These phases occur over a range of co…
Analysis of the stress-strain relationships in reactor grade graphite
Departure from linearity in the stress-strain relationships and plastic deformation are observed in reactor grade graphite at very small stresses. A model is put forward which describes the mechanical behaviour of such a material and a simple mathematical theory is derived which is shown to give an adequate descriptio…
Quantitative Analysis by X-ray Diffraction
Certain minerals in soil clays may be directly estimated from diffraction line intensity and the mass absorption coefficient of the sample to the radiation used. The main advantages of the method described are that no internal standards or calibration charts are required, and any dif-fraction line of the component to…