Materials Literature
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The corrosion resistances of several high-strength low-alloy steels in various atmospheres, in natural waters and in soil are compared with those of structural copper steel and structural carbon steel in the same environments. The effects of the many variables that influence the corrosion of these steels in the differ…
(1953). 24—THE GENERAL CASE OF FRICTION OF A STRING ROUND A CYLINDER. Journal of the Textile Institute Transactions: Vol. 44, No. 8-9, pp. T359-T362.
In this paper the properties of knitted fabrics, which will have to be known accurately and preferably quantitatively, before the design and specification of knitted structures for specific purposes is possible, are discussed. The load-extension characteristics of plain and ribbed structures are considered together wi…
The equilibrium curve for two of the phases of CaCO3, calcite-aragonite, has been determined as a function of temperature and pressure over the range 25–80°C and several thousand kg/cm2, using the electrical conductivity of aqueous solutions of each form. Aragonite is proved to be the high pressure modification. From…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTOxidations with Ruthenium TetroxideCarl Djerassi and Robert R. EngleCite this: J. Am. Chem. Soc. 1953, 75, 15, 3838–3840Publication Date (Print):August 1, 1953Publication History Published online1 May 2002Published inissue 1 August 1953https://pubs.acs.org/doi/10.1021/ja0111…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSegregation of Impurities During the Growth of Germanium and SiliconR. N. HallCite this: J. Phys. Chem. 1953, 57, 8, 836–839Publication Date (Print):August 1, 1953Publication History Published online1 May 2002Published inissue 1 August 1953https://pubs.acs.org/doi/10.1021/j1…
Abstract Recent experiments have indicated that the diffusion properties of a penetrant‐polymer system may change with time as diffusion proceeds. It is thought that two possible explanations of these time effects are slow changes of polymer structure accompanying diffusion and internal stresses exerted by one part of…
The average coefficients of thermal expansion of hexagonal zirconium between 298°K and 1143°K are 5.5×10−6 deg−1 along the a axis, 10.8×10−6 deg−1 along the c axis, and 7.2×10−6 deg−1 for a randomly oriented polycrystalline sample. The average value of the linear coefficient of expansion of cubic zirconium between 114…
It is known that the Curie point $\ensuremath{\theta}$ of the ferroelectric BaTi${\mathrm{O}}_{3}$ shifts to higher temperatures when a dc bias field is applied. If the crystal shows a sharp transition, we expect by applying an ac field at the Curie temperature that the crystal would become alternately ferroelectric a…
Summary Substitutional solute atoms in aluminium usually diffuse too slowly to cause appreciable strain ageing at room temperature. However, if the concentration of vacancies is increased by plastic deformation or by quenching, the rate of diffusion may increase sufficiently to cause strain ageing during plastic defor…
In the process of developing an atomic beam light source for use at high oven temperatures an investigation of the indium resonance lines at 4511A and 4101A was carried out. The employment of a well-collimated atomic beam, excited by electron impact, and of a Fabry-Perot interferometer made it possible to resolve clea…
Abstract The amount of energy stored in a cold-worked material is calculated on the assumption that the energy is due to piled-up groups of dislocations. It is found that a small percentage of the work done in deformation is stored, and that the amount of energy stored is proportional to the strain. These predictions…
Abstract Calculations from published figures of the equilibrium constants for the decomposition 2HNO 3 H 2 O + 2NO 2 + 1/2O 2 show that the degree of dissociation of nitric acid vapour is quite considerable even at moderate temperatures and reaches 100% at 200° and 1 atmosphere pressure. The rate of dissociation has b…
An integral expression for the electrical conductivity of thin films in a longitudinal magnetic field is derived by an analysis of free electron trajectories in the film. This is evaluated in the limit of strong magnetic fields.
In transducer applications of ferroelectric ceramics it is standard practice to rely for the electromechanical response on retained polarization. This is practicable only for moderate driving amplitudes and sufficiently low temperature. At higher driving fields dielectric losses increase inordinately and lead to event…
The results of a brief study of the origin and mode of formation of high resistance films on electrodes of demountable systems are presented. Evidence is given that the films are produced by the dissociation of organic molecules into radicals by electron bombardment and the polymerization of the latter. It is shown th…
The application of the kinetic theory of rubber elasticity to the description of the relaxation of cross-linked networks is only permissible in cases where the rate determining process is slow compared to the rate of diffusion of the polymer chains. Relaxation resulting from chemical reactions causing breaking of netw…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTOxides of the Transition Metals as CatalystsAlfred ClarkCite this: Ind. Eng. Chem. 1953, 45, 7, 1476–1480Publication Date (Print):July 1, 1953Publication History Published online1 May 2002Published inissue 1 July 1953https://pubs.acs.org/doi/10.1021/ie50523a034https://doi.or…
A review of the present state of knowledge of the variation with temperature of the thermal expansion of anisotropic metals. The theoretical significance of the experimental data is discussed.DOI:https://doi.org/10.1103/RevModPhys.25.665©1953 American Physical Society
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTThe Solid Solution Series, Boron-Boron Carbide1Robert D. AllenCite this: J. Am. Chem. Soc. 1953, 75, 14, 3582–3583Publication Date (Print):July 1, 1953Publication History Published online1 May 2002Published inissue 1 July 1953https://pubs.acs.org/doi/10.1021/ja01110a501https…