Materials Literature
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ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTDiffusion in Commercially Manufactured Pelleted CatalystsC. N. Satterfield and P. J. CadleCite this: Ind. Eng. Chem. Proc. Des. Dev. 1968, 7, 2, 256–260Publication Date (Print):April 1, 1968Publication History Published online1 May 2002Published inissue 1 April 1968https://p…
Deuterated hydrogrossular, Ca3Al2(O4D4)3, has been prepared in order to investigate, by neutron and x-ray diffraction, the isomorphic substitution of (O4H4)4− for (SiO4)4 −. A polycrystalline specimen yielded the cubic-cell edge, 12.5755 ± 0.0009 Å (28°C) and oxygen parameters x = 0.0303(3); y = 0.0547(4); z = 0.6430(…
The crystal structure of interstitial solid solution of zirconium-oxygen system was investigated by means of X-ray, electron and neutron diffraction on specimens in the composition range between 11 and 27 at% O. The specimens were prepared by melting appropriate mixtures of zirconium metal and zirconium dioxide in an…
The nature of the extensional response of anisotropic cylinders, such as helical-wound composite tubes, under various end con ditions is investigated analytically and experimentally. Of particular interest is the existence of a uniform state of stress under practical testing conditions. Also considered is the influenc…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTElectronic ground state of bis (maleonitrile-dithiolene)nickel monoanion. Sulfur-33 hyperfine interactionRichard D. Schmitt and August H. MakiCite this: J. Am. Chem. Soc. 1968, 90, 9, 2288–2292Publication Date (Print):April 1, 1968Publication History Published online1 May 20…
Through an investigation of the transport and related thermodynamic properties of TiNi at and around its ``martensitic'' transition temperature, the existence of a critical range extending over a 60°C interval is established. Within this critical range, the phase transition is second order. Irreversibility of various…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTReaction Kinetics of Production of Ammonium Sulfate from AnhydriteG. B. CordellCite this: Ind. Eng. Chem. Proc. Des. Dev. 1968, 7, 2, 278–285Publication Date (Print):April 1, 1968Publication History Published online1 May 2002Published inissue 1 April 1968https://pubs.acs.org…
Cyclodisilazan‐Polymere der Formeln magnified image werden A) durch die Pyrolyse von N,N'‐Diorganosdandiaminen mit aromatischen Diaminen sowie durch die katalytische Silylierung von aroniatischen und aliphatischen Draminen mit Silanen R n SiH 4− n (n = 1 und 2), und B) durch die Reaktion von α,ω‐diorgano‐aminosilyl‐su…
In separate experiments, mature rats were either given a ration containing L. leucocephala leaf meal at 15% or 7 3% level, or dosed orally each day with water extract of the leaf meal before and during the breeding period. At the 15% level, the food intake of the rats was greatly reduced, and they showed general sympt…
The electrical conductivity of magnesium oxide single crystals has been measured for the first time in the temperature range 400-750°C. Results agree well with those obtained by other workers at higher temperatures and a single activation energy of about 2·8±0·1 ev seems to apply from 400 to 1800°C. Fields varying fro…
Change-transport phenomena in thin films of vanadium dioxide have been investigated. This paper presents conductivity, Hall coefficient, and thermoelectric power data for reactively sputtered vanadium dioxide thin films both above and below the metal-semiconductor transition. Measurements were made both on single-crys…
Views Icon Views Article contents Figures & tables Video Audio Supplementary Data Peer Review Share Icon Share Twitter Facebook Reddit LinkedIn Tools Icon Tools Reprints and Permissions Cite Icon Cite Search Site Citation E. D. Morris, Harold S. Johnston; Digital Phase Sensitive Detector. Rev Sci Instrum 1 April 1968;…
A semidestructive method has been developed for determining the principal residual stresses and directions in rectangularly orthotropic materials. The reduction equations are based upon a set of functions that describe the surface strain-relaxation field about a hole drilled to a limited depth into the material. Three…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMethanetetraboronic esterRichard B. Castle and Donald S. MattesonCite this: J. Am. Chem. Soc. 1968, 90, 8, 2194Publication Date (Print):April 1, 1968Publication History Published online1 May 2002Published inissue 1 April 1968https://pubs.acs.org/doi/10.1021/ja01010a057https:…
The fluorescence of Nb5+-activated antimonates is reported. A relation has been found between the position of the maximum of the excitation (and absorption) band of the niobate octahedra and the quenching temperature of their fluorescence. This result can be explained using a simple configuration-coordinate diagram. T…
Abstract The thermal and oxidative degradation of poly(phenylene sulfide) and perfluoropoly(phenylene sulfide) have been studied by a weight‐loss method. The products of breakdown in vacuum have also been analyzed. The poly(phenylene sulfide) is more thermally stable in inert and oxidizing atmospheres than the fully f…
Abstract The adhesion between a polymer and a solid substrate may be considered to be one type of complex liquid‐solid interaction. Relationships between surface wettability and bulk properties of liquidlike polymers are discussed. A new and direct empirical relationship between the glass temperature ( T g ) and criti…
A multilayer model of the interface between a solid and a regular solution has been developed by treating the solution phase in the grand canonical ensemble. The partition functions necessary for the evaluation of the grand partition function are obtained using either the quasi-chemical or Bragg-Williams approximation…
The Dorn method, most commonly used to measure the activation energy of creep, was used to study the initial stage of sintering uranium dioxide in hydrogen from 700° to 850°C. The activation energy was approximately 100 kcal/mole. This result agrees with the value determined from analysis of isothermal shrinkage curve…
Far-infrared spectra of imidazole, imidazole-d4, 1-methyl imidazole, and 1-methyl-d3 imidazole have been examined in the 300 − 33-cm− 1 range. Six of the nine infrared-active lattice modes of crystalline imidazole have been observed and assigned. A tentative assignment of these frequencies in terms of hydrogen-bond mo…