Materials Literature
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The relationship between dissolution kinetics and resistance to pitting corrosion has been investigated using electrochemical measurements. It is shown that the ratio of dissolution rates in the presence and absence of chloride ion is inversely related to pitting resistance. The above concepts have been used to predic…
Solid solution between and of stoichiometric composition has been studied. It is found that for samples annealed at 600°C for periods of up to four weeks and then air quenched, single phase condition can be obtained at all alloy compositions, and the lattice shows a continuous transition from cubic to rhombohedral for…
The first- and second-order Raman spectra of calcium fluoride have been measured. With the crystal at room temperature the structure observed is in good agreement with earlier measurements of infra-red absorption and vibronic satellites. Some additional structure observed in the second-order Raman spectrum is ascribed…
Experiments have been carried out at 386°C to determine the concentration of anion vacancies at the metal‐oxide interface and the diffusion coefficients for anion vacancies in zirconium dioxide films on zirconium by the "interruption kinetic technique." The conditions for which this technique is valid are discussed. T…
R. J. Bratton and G. W. Brindley, Trans. Faraday Soc., 1965, 61, 1017 DOI: 10.1039/TF9656101017
M. Fleischmann, J. A. Harrison and H. R. Thirsk, Trans. Faraday Soc., 1965, 61, 2742 DOI: 10.1039/TF9656102742
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…
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…
E. Hirst and D. A. Rees, J. Chem. Soc., 1965, 1182 DOI: 10.1039/JR9650001182
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…
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…
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…
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…
J. E. Bujake and E. D. Goddard, Trans. Faraday Soc., 1965, 61, 190 DOI: 10.1039/TF9656100190
H. Marsh, T. E. O'Hair and R. Reed, Trans. Faraday Soc., 1965, 61, 285 DOI: 10.1039/TF9656100285
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…
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 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 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′…
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…