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Thermal Expansion Coefficient, Rigidity Modulus and Its Temperature Coefficient of the Alloys of Iron, Nickel, Cobalt and Chromium (1). Thermal Expansion and the Relation between Super Invar and Stainless Invar

Hakaru Masumoto、Hideo Sait ocirc、Tatsuo K ocirc no1955-01-01Journal of the Japan Institute of Metals and Materials

The influence of an addition of chromium on the thermal expansion coefficient of the alloys of iron, cobalt and nickel has been determined. It has been found that in the quaternary system of iron, cobalt, nickel and chromium, there are two valleys of the expansion coefficient, one of which originates in the compositio…

Intermetallics and Advanced Alloy PropertiesThermodynamic and Structural Properties of Metals and AlloysMetallurgical and Alloy Processes

A Review of the Structure and some Magnetic Properties of Ferrites

L. C. F. Blackman1955-01-01Journal of Electronics and Control

The combination of high electrical resistivity and useful magnetic properties has caused ferrites to become increasingly important as high-frequency core materials. A description of the general structural and saturation magnetization properties of the more simple ferrites, and of their preparation, is followed by a br…

Magnetic Properties and Synthesis of FerritesElectromagnetic wave absorption materialsIron oxide chemistry and applications

The corrosion of tin by aqueous solutions of ammonia

S. C. Britton、D. G. Michael1955-01-01Journal of Applied Chemistry

Abstract In some circumstances tin surfaces remain unattacked by solutions of ammonia. Factors leading to a low probability of the beginning of corrosion are: reduction in temperature of the solution, the quality of the metal surface, especially as it affects the formation of a protective oxide film in air, and also e…

Corrosion Behavior and InhibitionConcrete Corrosion and Durability

Conjugated macrocycles. Part XXVI. Octamethyltetrazaporphin

M. E. Baguley、H. G. France、R. P. Linstead 等 4 位作者1955-01-01Journal of the Chemical Society (Resumed)

M. E. Baguley, H. France, R. P. Linstead and M. Whalley, J. Chem. Soc., 1955, 3521 DOI: 10.1039/JR9550003521

Supramolecular Chemistry and ComplexesPorphyrin and Phthalocyanine ChemistryPorphyrin Metabolism and Disorders

MICROFILM DURABILITY TEST FOR ASPHALT

R. L. Griffin、T. K. Miles、C J Penther1955-01-01Assoc Asphalt Paving Technol Proc

A DURABILITY TEST FOR ASPHALT USING THE SLIDING PLATE (MICROFILM) VISCOMETER IS DESCRIBED AS FOLLOWS: A 5 MICRON FILM OF ASPHALT IS AGED ON GLASS PLATES FOR 2 HOURS AT 225 F. THE HARDENING WHICH OCCURS IS DETERMINED BY MEASURING THE VISCOSITY OF THE ASPHALT BEFORE AND AFTER AGING. THE DURABILITY IS REPORTED AS AN AGIN…

Aeolian processes and effectsGeotechnical and construction materials studiesEngineering and Material Science Research

Relation between lattice energy and melting points of some crystalline substances. II. Alkali Metals

Ram Gopal1955-01-01Zeitschrift für anorganische und allgemeine Chemie

Abstract Das Verhältnis der Bindungsenergie (–E e ) zum Schmelzpunkt (T m ) scheint für die Alkalimetalle annähernd konstant zu sein. Dies gibt einen weiteren Hinweis dafür, daß möglicherweise T m auch anorganischen festen Stoffen korrespondierende Temperaturen darstellt. Theoretisch läßt sich zeigen, daß nach der M O…

Thermal and Kinetic AnalysisChemical Thermodynamics and Molecular StructureMaterial Selection and Properties

Domain Rotation in Nickel Ferrite

Fielding Brown、Charles L. Gravel1955-01-01Physical Review

An experiment has been performed which leads to the conclusion that the initial permeability and radio-frequency dispersion in sintered nickel ferrite are due principally to rotation of crystallite magnetic moments in an equivalent anisotropy field. Samples have been prepared by the partial sintering of nickel ferrite…

Magnetic Properties and Synthesis of FerritesElectromagnetic wave absorption materialsMagneto-Optical Properties and Applications

Galvanic Corrosion Behavior of Titanium and Zirconium in Sulfuric Acid Solutions

D. Schlain、C.B. Kenahan、Doris V. Steele1955-01-01Journal of The Electrochemical Society

Aluminum alloys are the anodic members of titanium‐aluminum alloy couples in dilute sulfuric acid solutions in the presence of air. In stronger acid solutions, particularly when air is absent, aluminum alloys are anodic only at the beginning of the immersion period. After an induction period titanium becomes anodic. A…

Corrosion Behavior and InhibitionHydrogen embrittlement and corrosion behaviors in metalsConcrete Corrosion and Durability

Electrodeposition of Titanium on Base Metals

M. E. Sibert、M. A. Steinberg1955-01-01Journal of The Electrochemical Society

A method for electrodeposition of protective titanium coatings on steel and other base metals is described. The procedure involves electrolysis of potassium titanium fluoride dissolved in alkali or alkaline earth halides under an inert atmosphere. Graphite or titanium metal anodes are employed. Adherent titanium coati…

Hydrogen embrittlement and corrosion behaviors in metalsTitanium Alloys Microstructure and PropertiesMaterial Properties and Applications

Atomic configurations in luminescent centres

W. A. Runciman1955-01-01British Journal of Applied Physics

When the activator ions in a phosphor have a charge different from that of any ions in the host lattice, it is generally agreed that charge compensation must take place. A new theory of luminescent centres is proposed in which the compensation of charge, by lattice vacancies or by activator ions, is localized in the v…

Luminescence Properties of Advanced MaterialsRadioactive contamination and transferRadiation Detection and Scintillator Technologies

Nature of the Passive Film on Iron in Concentrated Nitric Acid

Herbert H. Uhlig、T.L. O'Connor1955-01-01Journal of The Electrochemical Society

The film responsible for passivity when iron is immersed in concentrated nitric acid is shown to be ferric acid or a related higher valence iron compound. This was proved ( a ) by demonstrating formation of chromates when a 2.84% Cr‐Fe alloy is passivated, ( b ) by showing complete suppression of the iron‐nitric acid…

Corrosion Behavior and Inhibition

Preparation of Titanium by Fluoride Electrolysis

M. A. Steinberg、S. Carlton、M. E. Sibert 等 4 位作者1955-01-01Journal of The Electrochemical Society

Preparation of commercially pure titanium metal powder by electrolysis of in molten is described. The process is carried out under an inert atmosphere in an all‐graphite cell. Operating conditions of the electrolysis and their effect upon the metal so produced are discussed. Preparation of the and the electrolytic pro…

Titanium Alloys Microstructure and PropertiesMuon and positron interactions and applicationsGraphite, nuclear technology, radiation studies

Research on the Electric Breakdown of Fully Impregnated Paper Insulation for High-Voltage Cables [includes discussion]

P. Gazzana Priaroggia、G. Palandri1955-01-01Transactions of the American Institute of Electrical Engineers Part III Power Apparatus and Systems

Research on the dielectric strength of high-voltage cables can be very conveniently carried out on "models". Either plate or cylindrical capacitors can be used for this purpose. This paper reports the results of many tests both at power frequency and at impulse, which have the purpose of investigating the separate and…

High voltage insulation and dielectric phenomena

Electrolytic Oxidation of Zinc in Alkaline Solutions

T. P. Dirkse1955-01-01Journal of The Electrochemical Society

A study has been made of the mechanism of the reaction taking place when zinc is anodically treated in potassium hydroxide solutions. The zinc‐containing ion present in solution as a result of the anodic treatment is . However, zinc oxide or hydroxide is an intermediate leading to the formation of . This latter ion th…

Corrosion Behavior and InhibitionElectrochemical Analysis and Applications

Kinetics of Nickel-Sulfur and Steel-Sulfur Reactions

Andrew Dravnieks1955-01-01Journal of The Electrochemical Society

The reaction of nickel with molten sulfur between 205° and 445°C follows the parabolic law. Up to 260°C the millerite form of was the only sulfide detectable in the scale. At 340°C and higher, the high temperature B8 form of was the only sulfide in the scale. The activation energy (Arrhenius) below approximately 300°C…

Thermal and Kinetic Analysis

The constitution and stereochemistry of terrein

D. H. R. Barton、E. Miller1955-01-01Journal of the Chemical Society (Resumed)

D. H. R. Barton and E. Miller, J. Chem. Soc., 1955, 1028 DOI: 10.1039/JR9550001028

Polyoxometalates: Synthesis and ApplicationsChemical Synthesis and ReactionsChemistry and Stereochemistry Studies

The acid strength of the hydrogen halides

J. C. McCoubrey1955-01-01Transactions of the Faraday Society

J. C. McCoubrey, Trans. Faraday Soc., 1955, 51, 743 DOI: 10.1039/TF9555100743

Solid-state spectroscopy and crystallographyMolecular Spectroscopy and Structure

Young's modulus of crystalline, unstretched rubber

Michaela Leitner1955-01-01Transactions of the Faraday Society

M. Leitner, Trans. Faraday Soc., 1955, 51, 1015 DOI: 10.1039/TF9555101015

Polymer Nanocomposites and PropertiesExperimental and Theoretical Physics StudiesMaterial Properties and Processing