Electrocrystallization of thin films of nickel
M. Fleischmann, J. A. Harrison and H. R. Thirsk, Trans. Faraday Soc., 1965, 61, 2742 DOI: 10.1039/TF9656102742
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Mechanism of secondary crystallization of polymethylene
The single crystal model previously proposed for the primary crystallization of polymethylene (Gordon and Hillier 1964) is extended to the secondary or post-Avrami process. An equation by Eyring, which generalizes Maxwell's treatment for the relaxation of matter, is shown to fit this process, which can be kinetically…
Magnetic and X-Ray Studies of Iron-Germanium System I Partial Diagram of Phase with B82 and Its Variant Type of Structure
The earlier diagram of β phase region is revised on the basis of x-ray and magnetic studies, and the existence of three phases β, η, κ is confirmed. The new β phase is homogeneous in a range from 32.8 to 40.0 at% Ge at 1050°C, η phase from 40.8 to 43.5 at% Ge at 800°C and κ phase has a narrow range of homogeneity at 4…
208. The structure of alginic acid. Part V. Isolation and unambiguous characterization of some hydrolysis products of the methylated polysaccharide
E. Hirst and D. A. Rees, J. Chem. Soc., 1965, 1182 DOI: 10.1039/JR9650001182
Analysis of Enhanced Diffusivity in Nickel
The coefficient of self-diffusion in annealed and prestrained nickel single crystals, Du, determined in the temperature range 948° to 1023°K by radioactive counting of the surface is Du=1.9 exp(−66 800/RT) cm2sec−1. The coefficient of self-diffusion in annealed and prestrained fine-grained nickel crystals, Du′, in the…
Glass Transition Temperature of Polymers
The effect of low concentrations of plasticizer, chain ends, or comonomer on the glass transition temperature of a polymer can be described by a linear equation with respect to the weight fraction. Over the entire range of composition, these effects can be described approximately by a quadratic equation. The interrela…
Crack-Velocity Considerations
If resistance to crack growth always increased with crack velocity, then its measure at nil velocity, Gc or GIc, would always represent minimum toughness and thus a safe criterion. The practical difficulty arises if an increased crack speed, or loading rate of a fixed crack, results first in a decrease in R, possibly…
Electron impact spectroscopy III. Calculated cross sections for inelastic scattering from benzene
The Born approximation is used to obtain differential and total cross sections for inelastic electron scattering from benzene. The three lowest excited singlet states are treated (i.e. those of symmetry 1 B 1u , 1 B 2u and 1 E 1u ). Simple π-electron antisymmetric molecular orbitals are used as the electronic wave fun…
Surface composition of sodium lauryl sulphonate and sulphate solutions by foaming and surface tension
J. E. Bujake and E. D. Goddard, Trans. Faraday Soc., 1965, 61, 190 DOI: 10.1039/TF9656100190
Oxidation of carbons and graphites by atomic oxygen an electron microscope study of surface changes
H. Marsh, T. E. O'Hair and R. Reed, Trans. Faraday Soc., 1965, 61, 285 DOI: 10.1039/TF9656100285
Angular Variation of Coercivity in Orthoferrite Single Crystals
The coercive force Hc as a function of the angle between the easy axis of magnetization and the external field has been studied in orthoferrite single crystals using the vibrating sample technique. The experimental results are in good agreement with the Kondorsky 180° wall motion model which predicts the relation Hc(0…
A Study of the Phase Transitions in PbZrO[sub 3]
An investigation of the linear thermal expansion of high purity specimens of polycrystalline has revealed that a ferroelectric phase is stable in this compound between 226° and 236°C on heating. The same phase exists between 226° and 212°C on cooling. The data were all obtained at a constant heating and cooling rate o…
The Effect of Composition and Structure on the Electrochemical Reactivity of Nickel
The electrochemical reactivity of nickel is defined in terms of the parameters of the anodic polarization curve as determined potentiostatically. The effect of structure and the effect of the additives carbon, silicon, sulfur, selenium, tellurium, and phosphorus on the parameters of the polarization curve have been de…
Reflection Spectra of Lanthanides in Cubic Oxides Containing Titanium (IV), Zirconium (IV), Indium (III), Tin (IV), Cerium (IV), and Thallium (III)
Reflection spectra are measured at 100°K of M= neodymium(III), samarium (III), europium (III), dysprosium (III), holmium (III), erbium (III), and ytterbium (III) in mixed oxides such as M x M′1- x O 1,5 [M′=yttrium (III), indium (III), lanthanum (III), gadolinium (III) or thallium (III)] and M x M′1- x O 2 -0.5 x [M′…
High-Temperature Specific Heats of Ge, Si, and Ge-Si Alloys
The specific heats of Ge, Si, and Ge-Si alloys were determined in the temperature range 300° to 1000°K, by a novel temperature-modulation technique. The specific heat at constant pressure cp exceeds appreciably the Dulong-Petit value cDP at high temperature. Above the Debye temperature θD the divergence can be represe…
Hydrogen Bonding and Complex Formation in Solutions of t-Butyl Hydroperoxide1
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTHydrogen Bonding and Complex Formation in Solutions of t-Butyl Hydroperoxide1Cheves Walling and LaDonne HeatonCite this: J. Am. Chem. Soc. 1965, 87, 1, 48–51Publication Date (Print):January 1, 1965Publication History Published online1 May 2002Published inissue 1 January 1965…
1194. The chemistry of polynuclear compounds. Part III. Magnetic properties of some carboxylic acid derivatives of copper(II)
J. Lewis, Y. C. Lin, L. K. Royston and R. C. Thompson, J. Chem. Soc., 1965, 6464 DOI: 10.1039/JR9650006464
Poly‐1,3,4‐oxadiazoles. I. Polyphenylene‐1,3,4‐oxadiazoles
Abstract Polyphenylene‐1,3,4‐oxadiazoles have been prepared from benzenedicarboxylic acids or their derivatives and hydrazine by solution polycondensation in fuming sulfuric acid or polyphosphoric acid. These polymers were characterized by good thermal stability, and the molecular weights attained were high enough for…
Comparative Interpretation of Absorption Spectra of Technetium (IV) and Rhenium (IV) Hexahalides
Absorption spectra of aqueous solutions of TcX 6 - and ReX 6 - (X = F, Cl, Br, I) are measured between 8 000 and ∼ 50 000 cm -1 and theoretically discussed. The electron transfer spectra indicate the optical electronegativity x opt = 2.25 for Tc (IV) and 2.05 for the less oxidizing Re (IV). The spectrochemical paramet…
Performance of synthetic insulating materials under polluted conditions
Both the dust/fog and IEC methods have been used to investigate the resistance to surface tracking and erosion of a range of synthetic insulating materials under polluted conditions. The relative merits of these test methods are discussed, and reasons given for preferring the dust/fog test. Consideration is also given…