Materials Literature
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Interfacial reactions of various metals (Be, Mo, Nb, Ni, Si, Ti, and Zr) with dense oxide specimens (Al 2 O 3 , BeO, MgO, ThO 2 , and TiO 2 ) were investigated at temperatures up to 1800°C. The reactions in general occurred in the same order as thermodynamic stabilities indicated. Four general types of behavior were o…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTCrystal Structures of Rare Earth OxychloridesD. H. Templeton and Carol H. DaubenCite this: J. Am. Chem. Soc. 1953, 75, 23, 6069–6070Publication Date (Print):December 1, 1953Publication History Published online1 May 2002Published inissue 1 December 1953https://pubs.acs.org/do…
Abstract Polystyrene, in common with a number of other long chain polymers, can be crosslinked by exposure to high energy radiation, the degree of crosslinking being directly proportional to the radiation dose. Measurements were made of the solublity in benzene and toluene, as a function of degree of crosslinking. A t…
UO 2 and ThO 2 form a continuous series of solid solutions with the solidus‐liquidus extended from 2875°C. for UO 2 to above 3200°C. for ThO 2 .
During the course of a broader investigation on the cordierite‐spodumene join in the system Li 2 O–MgO–Al 2 O 3 –SiO 2 , a clearer picture of the relationships between the various reported polymorphs of cordierite has been developed. Three forms of cordierite have been recognized.*α‐Cordierite is the stable high‐tempe…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTThe Molecular Structure of Polyethylene. V. The Effect of Chain Branching and Molecular Weight on Physical Properties1C. A. Sperati, W. A. Franta, and H. W. Starkweather Jr.Cite this: J. Am. Chem. Soc. 1953, 75, 24, 6127–6133Publication Date (Print):December 1, 1953Publicati…
Optical glasses were produced using arsenic trisulfide as a network former and different sulfides as network modifiers. These glasses transmit infrared up to 12–13 microns in thicknesses useful for optical purposes. The transmission of glassy selenium was determined up to 21 microns and a few composite selenium glasse…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSelf-diffusion of Cations in and through Sulfonated Polystyrene Cation-exchange Polymers1G. E. Boyd and B. A. SoldanoCite this: J. Am. Chem. Soc. 1953, 75, 24, 6091–6099Publication Date (Print):December 1, 1953Publication History Published online1 May 2002Published inissue 1…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTThe Molecular Structure of Polyethylene. I. Chain Branching in Polyethylene during Polymerization1M. J. RoedelCite this: J. Am. Chem. Soc. 1953, 75, 24, 6110–6112Publication Date (Print):December 1, 1953Publication History Published online1 May 2002Published inissue 1 Decemb…
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There exist two types of sediment load, one that bears a certain relationship with the discharge (bed‐material load), and the other which does not (wash load). The result of flume study indicates that the transport rate of wash load, just as that of the bed‐material load, can be calculated according to the Einstein be…
The theory of the influence on angular correlations of perturbing interactions in the intermediate state is reformulated to allow the description of the effects of time-dependent as well as of static perturbations. For static interactions of the nuclear electric quadrupole moment with crystalline fields of axial symme…
An electron-diffraction study of the oxide films formed by heating aluminium foil in air on metal grid supports has revealed the occurrence of a number of new phases arbitrarily designated the h,/~, v, ~ and ~' phases. Except for the h-phase, all these phases may be indexed in terms of hexagonal unit cells with a ~ 5…
Abstract The thermal conductivity of a type I diamond has been measured between 2° K and room temperature. Above 100° K the temperature variation of conductivity accords with Peierls’s theory of Umklapp processes. To account for the results at the lowest temperatures it is necessary to assume that some specular reflex…
Calciumaluminiumhydrid wird durch Umsetzung von Aluminiumchlorid und Calciumhydrid in Tetrahydrofuran dargestellt. Das aus der Losung gewonnene Festprodukt enthalt auch in trockenem Zustand noch 40—50% Tetrahydrofuran und ist in seinen Eigenschaften dem Lithiumaluminiumhydrid weitgehend ähnlich.
A quantitative technique has been developed in which a weighed sample of cotton fiber is swollen in sodium hydroxide, centrifuged to remove liquid from between the fibers, and re weighed to determine its percentage increase in weight, the latter quantity being designated here as the fiber's "alkali-centrifuge value."…