Electrochemistry of sulphur. Part 1.—Overpotential in the discharge of the sulphide ion
P. L. Allen and A. Hickling, Trans. Faraday Soc., 1957, 53, 1626 DOI: 10.1039/TF9575301626
Materials Literature
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Low-Pressure Solubility and Diffusion of Hydrogen in Zirconium
Low‐pressure solubilities were determined for H in α‐ and β‐Zr and in two Zr‐O alloys at 700°–1000°C and pressures of 0.1–4 µ Hg. The data followed Sieverts' law for each phase, and H solubility decreased with increasing temperature at a given pressure. Also, there was a slight increase in H solubility in α ‐Zr with i…
SOME STATISTICS ASSOCIATED WITH THE RANDOM DISORIENTATION OF CUBES
A Monte Carlo method is used to estimate the frequency functions of various angles in a random aggregate of cubic crystals. Estimates are made of the frequency function for the angle of disorientation, i.e. the least angle of rotation required to rotate a crystal into the same orientation as a neighbouring crystal, an…
Permeation of Gases through Solids
The permeation process consists of the steps: adsorption, solution, diffusion, and desorption. These are discussed for glasses, polymers, and metals. There are two generalizations: (1) All gases go through all polymers. (2) No rare gas permeates any metal. Criteria are given for measurements of the permeation process.…
Meso-ionic compounds
The first page of this article is displayed as the abstract.
Vacuum Deposition of Thin Films
Abstract not Available.
Saturation magnetization of some ferrimagnetic oxides with hexagonal crystal structures
Anderson's treatment of super-exchange yields a qualitative rule for the dependence of interaction on angle Me—O—Me. Using this rule, and assuming a longer distance to lead to a weaker interaction, low-temperature saturation magnetizations for ferrimagnetic oxides with known crystal structures can often be predic…
Closure to “Discussion of ‘Electrochemical Polarization, 1. A Theoretical Analysis of the Shape of Polarization Curves’ [M. Stern and A. L. Geary (pp. 56–63, Vol. 104)]”
Abstract not Available.
Semiempirical Determination of Mass Absorption Coefficients for the 5 to 50 Angstrom X-Ray Region
A semiempirical method for the determination of mass absorption coefficients for the very soft x-ray region of 5 to 50 A is described. A universal function for the absorption by K-shell electrons and another for absorption by L and extra-L shell electrons are given in table form to permit the calculation of mass absor…
The formation of films on aluminium immersed in water
R. K. Hart, Trans. Faraday Soc., 1957, 53, 1020 DOI: 10.1039/TF9575301020
Electrochemical Polarization
The oxidation‐reduction kinetics of the ferrous‐ferric sulfate system have been measured on a stainless steel surface. The data completely support theoretical equations which describe the potential‐current relationships for such a system. The analysis applies to reversible electrodes and to corroding electrodes where…
Phase Analysis Studies on the Titanium-Oxygen System.
The titanium--oxygen system has been studied by means of x-ray powder photographs of preparations quenched after annealing at various temperatures. A number of phases not previously described has been observed, viz., Ti/sub 2/O, TiO (low-temperature modification), Ti/sub 4/O/sub 7/, Ti/sub 5/O/su b 9/, Ti/sub 6/O/sub…
The Application of Differential Thermal Analysis to the Study of Reaction Kinetics1
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTThe Application of Differential Thermal Analysis to the Study of Reaction Kinetics1Hans J. Borchardt and Farrington DanielsCite this: J. Am. Chem. Soc. 1957, 79, 1, 41–46Publication Date (Print):January 1, 1957Publication History Published online1 May 2002Published inissue 1…
Electrochemical Polarization
At low overvoltage values, deviations from Tafel behavior for a noncorroding electrode are due primarily to the reverse reaction of the oxidation‐reduction system, and at high overvoltages to concentration and/or resistance polarization. It is shown further that the practice of placing straight lines through a few exp…
Effect of Monolayer Adsorption on the Ejection of Electrons from Metals by Ions
Electron ejection from metals by ions is shown in this work to be a surface-sensitive phenomenon which is profoundly affected by the adsorption of a monolayer of foreign gas on an atomically clean metal surface. Monolayer adsorption is shown to decrease the total electron yield, ${\ensuremath{\gamma}}_{i}$, primarily…
Internal Friction and Critical Stress of Copper Alloys
The effects of strain amplitude on the internal friction and the Young's modulus of polycrystalline specimens of copper alloys (Cu–Zn, Cu–Al, Cu–P) with various concentrations of solute atoms have been investigated. The results are: 1. The critical stress, up to which the internal friction and the Young's modulus are…
Thermal and Electrical Properties of Tungsten Oxide (WO3)
Thermal and electrical properties of tungsten oxide were observed in a wide range of temperature. An entirely new anomaly was found at 1230°C, where the rate of sublimation increased abruptly. The amounts of anomalous heat were found to be 330, 450, 280 and 120 cal/mol at the 330°C, 740°C, 910°C and 1230°C transitions…
Thermodynamics of Crystallization in High Polymers. Gutta-Percha
Abstract The melting temperatures of two of the crystalline modifications of gutta-percha and their mixtures with either methyl oleate or tetradecane as diluent were determined by x-ray diffraction and dilatometric methods. It was found that the melting temperatures of the two forms in the pure polymer were 64 and 74°…
Chain Scissions in a Polymer Network
Abstract Relations between degree of crosslinking and gel fraction in a polymer have been derived by several authors. An important parameter in these relations is the crosslinking index γ, the average number of crosslinks to which one original polymer molecule is linked. The relations have been applied to the determin…
Some Physical Properties of High‐Density Thorium Dioxide
The values for a number of physical properties are reported for a very high density form of thorium dioxide. When specimens of a mixture of 99½% ThO 2 and ½% CaO, by weight, were hydrostatically pressed at 30,000 lb. per sq. in. and heat‐treated for 1 hour at 1800°C., they attained 99.0% of theoretical density. All th…