Materials Literature
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ABSTRACT In a survey of magnesium silicates for use as refractories, experimental studies with talc, serpentine, and olivine, and also with mixtures of these minerals and magnesia (MgO) are reported. Since forsterite (2MgO°SiO 2 ) is the only magnesium silicate which has a stable existence above 1562°C, the developmen…
ABSTRACT X‐ray diffraction patterns of soda‐silica glass have been made for seven different compositions varying from O to 46% Na 2 O. For small soda content, the patterns show a single strong peak at sinθ/λ= 0.12; with increasing soda content this peak diminishes in intensity, while at the same time a new peak at sin…
ABSTRACT Vapor pressures of B 2 0 3 , Na 2 O, B 2 O 3 , and Na 2 O.2B 3 O were obtained at 50°C intervals between 1150°C and 1400°C, utilizing the dynamic method with dry N 2 under normal atmospheric pressure. Assuming normal vapor densities, the vapor pressures in millimeters of mercury at O°C were as follows: Temper…
Mean hydrostatic pressures up to 50,000 kg/${\mathrm{cm}}^{2}$ combined with shearing stresses up to the plastic flow point are produced in thin disks confined between hardened steel parts so mounted that they may be subjected to normal pressure and torque simultaneously. Qualitative and quantitative studies are made…
Article A Back-Reflection Laue Method for determining Crystal Orientation was published on November 1, 1935 in the journal Zeitschrift für Kristallographie - Crystalline Materials (volume 91, issue 1-6).
Potassium hexachlorothalliate dihydrate is shown from x-ray data to possess a body centered tetragonal unit of structure with a0 = 15.841±0.020A, c0 = 18.005±0.020A containing 14 K3TlCl6–2H2O. A structure with nineteen determinable parameters is developed from D4h17 — I 4/mmm, and accounts satisfactorily for observed…
The results of actual service tests of commercial leathers show that chrometanned sole leather wears longer than vegetable-tanned leather, and that the durabilities of retanned or of combination-tanned leathers lie between the two.
Article A Direct Method for the Determination of the Components of Interatomic Distances in Crystals was published on October 1, 1935 in the journal Zeitschrift für Kristallographie - Crystalline Materials (volume 90, issue 1-6).
Research Article| September 30, 1935 Glauconite genesis E. WAYNE GALLIHER E. WAYNE GALLIHER Search for other works by this author on: GSW Google Scholar Author and Article Information E. WAYNE GALLIHER Publisher: Geological Society of America Received: 24 Dec 1934 First Online: 02 Mar 2017 Online Issn: 1943-2674 Print…
A method has been devised for calculating the absorption factor for the powder method. It may be used for all values of μ r , where μ is the linear absorption coefficient and r the radius of the specimen. It is, however, especially suitable when μ r exceeds 2. For smaller values of μ r , for which the calculations are…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSolubility Equilibria of Sodium Sulfate at Temperatures of 150 to 350°. I. Effect of Sodium Hydroxide and Sodium Chloride1W. C. Schroeder, Alton Gabriel, and Everett P. PartridgeCite this: J. Am. Chem. Soc. 1935, 57, 9, 1539–1546Publication Date (Print):September 1, 1935Publ…
γ-Fe2O3. γ-Al2O3 and the oxide obtained by the electrolytical oxydation of Al (γ′-Al2O3) are averaged structures with regard to the cations. Both the γ and γ′ oxides have the same oxygen-lattice but there is a distinct difference in the degree of incomplete arrangement of the cations. γ′-Al2O3 and γ-Al2O3 (Fe2O3) are…
The changes that occur in the magnetic properties of iron-cobalt-nickel alloys when they are annealed in a magnetic field, have been investigated for a series of these alloys. The maximum change for the iron-nickel alloys occurs between 65 and 70 percent nickel and is evidenced by a large increase in maximum permeabil…
The lattice-dimensions of pure zinc oxide condensed from the smoke have been determined to a high degree of accuracy by means of X-ray powder photographs. Bradley and Jay's lattice-dimensions of quartz and Siegbahn's X-ray wave-lengths being accepted as standards, the lattice-dimensions of zinc oxide are found to be:…
The method of Wigner, Seitz and Slater has been applied to the determination of the electronic structure of diamond. It is found that the energy levels of the carbon atom are broadened into bands similar to the energy bands in metals. The 2s level of the atom splits into two bands, and the 2p level into six bands. The…
The problem of accounting for the anomalous scattering of gamma-rays suggests the importance of investigating the probability of processes in which an incoming quantum produces an electron-positron pair in the field of a nucleus, going on in a new direction with diminished energy. To determine the cross section in the…
Research Article| August 01 1935 A note on the phosphorus content of marine algae Paul Haas; Paul Haas 1The Botanical Department of University College, London Search for other works by this author on: This Site PubMed Google Scholar Barbara Russell-Wells Barbara Russell-Wells 1The Botanical Department of University Co…
Abstract "Bleaching powder" is made by the action of chloride gas on calcium hydroxide, the reaction being essentially: 2Ca(OH)2 + 2Cl2 → Ca(OCl)2 + CaCl2 + 2H2O. The constitution of the solid formed in this way has been the subject of investigation and speculation for many years, since its properties are not those to…
ADVERTISEMENT RETURN TO ISSUEArticleNEXTCatalytic Oxidations. I. Oxidations in the Furan SeriesNicholas A. Milas and William L. WalshCite this: J. Am. Chem. Soc. 1935, 57, 8, 1389–1393Publication Date (Print):August 1, 1935Publication History Published online1 May 2002Published inissue 1 August 1935https://pubs.acs.or…
Kaolinite was synthesized by heating coprecipitated AJ20 3-Si02 gels and mixtures of Al20 3 and Si02 with water in a pressure bomb at 310 0 C. Similarly dickite was prepared by treating coprecipitated Ah03-Si02 gels at 350 0 C and 365 0 C, beidellite from mixtures of Ab03 and Si02 at 350 0 C and 390 0 C, and also from…