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XIV. On the oxidation of metals at low temperatures and the influence of light

N. Cabrera1949-02-01The London Edinburgh and Dublin Philosophical Magazine and Journal of Science

Summary The theory of Molt ( 1940, 1947) for the oxidation of metals at low temperatures has been discussed and extended to oxides, such as Cu20, for which the metal diffuses through the oxide by the mechanism of vacant lattice points. It is also proved that the logarithmic law will be valid down to very low temperatu…

Metallurgical Processes and ThermodynamicsLaser-induced spectroscopy and plasmaElectron and X-Ray Spectroscopy Techniques

The system BaO-B2O3

Ernest M. Levin、Howard F. McMurdie1949-02-01Journal of research of the National Bureau of Standards

A phase equilibrium diagram of the system BaO-B20 3 has been constructed fr om data obtained essentiall y by the quenching method. Four congruently m elting compounds were identifi ed: BaOAB20 3, melting at 879 5 C; BaO.2B20 3, melting at 900 5 C; BaO.B20 3, melting at 1,095 5 C; and 3BaO.B20 3, melting at 1,383 5 C .…

Clay minerals and soil interactionsGlass properties and applicationsCrystal Structures and Properties

The Sodium Tungsten Bronzes. I. Chemical Properties and Structure

M. E. Straumanis1949-02-01Journal of the American Chemical Society

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTThe Sodium Tungsten Bronzes. I. Chemical Properties and StructureM. E. StraumanisCite this: J. Am. Chem. Soc. 1949, 71, 2, 679–683Publication Date (Print):February 1, 1949Publication History Published online1 May 2002Published inissue 1 February 1949https://pubs.acs.org/doi/…

Advanced Materials Characterization TechniquesMetallurgical and Alloy ProcessesSurface and Thin Film Phenomena

Thermal degradation of polystyrene and polyethylene. Part III

H. H. G. Jellinek1949-02-01Journal of Polymer Science

Abstract An apparatus has been constructed which enables one to follow continuously the formation of monomer during degradation in vacuum. Experimental results are presented on the degradation of fractionated and unfractionated polystyrene over a range of temperatures from 340–400°C. in vacuum. A mechanism has been pr…

Polymer crystallization and propertiesPolymer Nanocomposites and PropertiesPolymer Science and PVC

Density and Packing in an Aggregate of Mixed Spheres

Douglas Rennie Hudson1949-02-01Journal of Applied Physics

It is shown that in close packing of spheres, two types of interstice exist, bounded by six and by four convex spherical surfaces. These are termed ``square'' and ``triangular.'' They are connected by a continuous labyrinth through which a ball not exceeding (2/√3−1)r in radius can be threaded. In both cubic and hexag…

Cellular and Composite StructuresAdditive Manufacturing and 3D Printing Technologiesbiodegradable polymer synthesis and properties

Calculation of stress in electrodeposits from the curvature of a plated strip

Abner Brenner、S. Senderoff1949-02-01Journal of research of the National Bureau of Standards

Formulas are derived for the calculation of stress in electrodeposits from the curvature developed in a plated strip. All the formulas are derived from the fundamentals of the theory of elasticity and the relationships among the various formulas are showll. Simplifi ed formulas are derived and their limits of applicab…

Smart Materials for ConstructionCorrosion Behavior and InhibitionAnodic Oxide Films and Nanostructures