Materials Literature
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Abstract In the first part of the paper various orientation phenomena of the drawing‐relaxation behavior are interpreted in terms of the changes occurring within the submicroscopic helices which form the spherulites. Not only drawing and relaxation but also the redrawing of the relaxed samples were followed, and it wa…
The corrosion rate of pure iron in deaerated acid media was studied as a function of p H. The rate was found to be essentially independent of p H over the range 1–4 in 4% sodium chloride. Potential and polarization measurements are used to explain this behavior. A method for calculation of corrosion rates from electro…
R. M. Barrer and D. M. MacLeod, Trans. Faraday Soc., 1955, 51, 1290 DOI: 10.1039/TF9555101290
D. H. Everett, Trans. Faraday Soc., 1955, 51, 1551 DOI: 10.1039/TF9555101551
The first page of this article is displayed as the abstract.
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U. Eisner and R. P. Linstead, J. Chem. Soc., 1955, 3749 DOI: 10.1039/JR9550003749
L. Young, Trans. Faraday Soc., 1955, 51, 1250 DOI: 10.1039/TF9555101250
The energy of a ferromagnetic substance comprises three parts, the exchange, anisotropy and magnetostatic (demagnetizing) energies. These all vary with the state of strain of the substance and so it will deform spontaneously if the deformation reduces the total energy (equal to the sum of the magnetic energy and the e…
The sources and calculation of thermal stresses are considered, together with the factors involved in thermal stress resistance factors. Properties affecting thermal stress resistance of ceramics are reviewed, and testing methods are considered.
The first page of this article is displayed as the abstract.
An attempt is made by Hartman & Perdok to find relations between crystal structure and crystal morphology on an energy basis. It is concluded that the morphology of a crystal is governed by chains of strong bonds running through the structure.
Abstract not Available.
The electrical and optical properties of InSe have been investigated with single crystals of the compound. The spectral dependence of the optical absorption coefficient and of the photoconductivity was measured. The optical absorption edge was not sufficiently well defined for the band gap to be estimated unambiguousl…
Abstract A mgnetically controlled null-point modification of the rotating crucible viscometer has been devised which enables measurements of the viscosity of liquids to be made at maximum temperatures of 1850° C. The instrument has been applied to measure the viscosity of the system CaO -SiO2 over the composition rang…
Abstract The crystal structure of polyethylene terephthalate (Terylene) has been determined by the interpretation of the X-ray diffraction patterns given by drawn fibres. The unit cell, which contains one chemical unit, —CO.C6H4.CO.O.(CH2)2O—, is triclinic, with a = 4.56Å, b = 5.94 Å, c = 10.75 Å, α = 98 1/2°, β = 118…
Abstract (1) The phenomenon of stress relaxation in vulcanizates, due to thermal decomposition of the vulcanization structures, is discussed. The process follows the equation: σ t =σ 0 ⋅e −kt , where k is the kinetic constant of decomposition of the vulcanization structures, and therefore can serve as a measure of the…