Materials Literature
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Synopsis In 1913, a grain elevator near Winnipeg, Canada, experienced a bearing-capacity failure during its first loading. The foundation consisted of a large rectangular raft resting on a plastic clay deposit. The load at failure is known. This article presents the results of tests made to determine the properties of…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTCatalytic Activity of Lanthanum and Strontium ManganiteG. ParravanoCite this: J. Am. Chem. Soc. 1953, 75, 6, 1497–1498Publication Date (Print):March 1, 1953Publication History Published online1 May 2002Published inissue 1 March 1953https://pubs.acs.org/doi/10.1021/ja01102a52…
In a previous paper (Brindley, 1951) chamosites from a number of localities were examined, and their structure was shown to be of kaolin-type. Furthermore, it was shown that many of the variations in X-ray powder diagrams of chamosites can be accounted for by the existence of two kaolin-type structures, one hexagonal…
Young's moduli (E) of the directions 〈100〉 and 〈111〉 and the shear modulus (G) for 〈100〉 were determined in germanium from −195 to 255, 275, and 140°C, respectively. From these moduli, the elastic parameters, the compressibility, and Poissons's ratio were calculated. The thermal expansion was measured from −196 to 275…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTTHE CHEMISTRY OF HYDROPEROXIDES. XII. THE GENERATION AND PROPERTIES OF FREE RO2. RADICALSM. S. KHARASCH, PETER PAUSON, and WALTER NUDENBERGCite this: J. Org. Chem. 1953, 18, 3, 322–327Publication Date (Print):March 1, 1953Publication History Published online1 May 2002Publish…
Abstract A method for following rapid crystallization in polymers using infrared absorption has been devised. The infrared absorption was correlated quantitatively with the density of polyethylene terephthalate for varying degrees of crystallinity and qualitatively with the change in x‐ray diffraction pattern on cryst…
C . W. Bunn and H. Emmett have observed the spreading, of multi-molecular layers on growing crystals of artificial compounds, and have suggested that deposition takes place on the high-index surfaces at the edges of the layers. Their work led the author to examine crystals of several mineral species for evidence of th…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTIdentification of Polymorphic Forms of Crystals by Infrared SpectroscopyD. N. KendallCite this: Anal. Chem. 1953, 25, 3, 382–389Publication Date (Print):March 1, 1953Publication History Published online1 May 2002Published inissue 1 March 1953https://pubs.acs.org/doi/10.1021/…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSurface Tension at Elevated Temperatures. I. Furnace and Method for Use of the Sessile Drop Method; Surface Tension of Silicon, Iron and NickelW. D. Kingery and M. Humenik Jr.Cite this: J. Phys. Chem. 1953, 57, 3, 359–363Publication Date (Print):March 1, 1953Publication Hist…
Using the mass spectrometer as an analytical tool and as a means of rate measurement, the rates of helium diffusion through nine types of glass were measured. The temperature range covered was from –80° to 600°C. The highest rates were for fused silica and Vycor brand glass; the lowest were for the lead glasses. The r…
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A simplified procedure is given for determining the 5 magnetostriction constants of a single crystal of a ferromagnetic cubic crystal. The crystal is cut as a disk parallel to a (110) plane, and strain gauges are cemented to the surfaces to measure strains in [001] and [$1\overline{1}1$] directions. A magnetic field s…
The thermal conductivity, electrical resistivity, and thermoelectric power have been measured in the temperature range from 20\ifmmode^\circ\else\textdegree\fi{}K to 300\ifmmode^\circ\else\textdegree\fi{}K for samples of artificial extruded graphite, natural molded graphite, and lampblack graphite. Experimental result…
Abstract A discussion is given of the advantages of the thermodynamic approach in the study of clay-ion-water systems. Generally valid equations for the description of the systems are given, and the relative significance of the osmotic terms is roughly assessed. The principal theoretical and experimental problem is th…
Abstract The clay minerals in a soil developed from Lenoir limestone (Ordovician) in Augusta County, Va., are kaolinite and chlorite. The Lenoir limestone contains clay partings consisting of hydrous mica, and the clay in the soil is considered to be residual from that in the parent limestone and modified by soil-form…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPhase Study of the PbO—PbBr2 System by X-Ray DiffractionFrances W. Lamb and Leonard M. NiebylskiCite this: J. Am. Chem. Soc. 1953, 75, 3, 511–518Publication Date (Print):February 1, 1953Publication History Published online1 May 2002Published inissue 1 February 1953https://pu…