Materials Literature
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Abstract Durch Röntgenuntersuchung der Systeme CaAl 2 O 3 und SrOAl 2 O 3 konnte festgestellt werden, daß in jenem System 5 und diesem 4 intermediäre Kristallarten auftreten. Da jedes Strontiumaluminat in einem Calciumaluminat ein Gegenstück hat, sind die Systeme einander weitgehend analog.
A dew point apparatus was devised for measuring the humidity over aqueous solutions of non-volatile substances. Preliminary experiments proved that results obtained with the instrument were reproducible and that it could be used to make dependable measurements of the relative humidity over such solutions in the range…
The X-ray method has been employed to investigate the occlusion of hydrogen by palladium when the pressure of the hydrogen surrounding the palladium and the temperature of the palladium are varied. Measurements were made of the parameter of palladium at temperatures of 80, 100, 120, 140 and 160° C. when the palladium…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTWater-Soluble Cellulose EthersL. H. BockCite this: Ind. Eng. Chem. 1937, 29, 9, 985–987Publication Date (Print):September 1, 1937Publication History Published online1 May 2002Published inissue 1 September 1937https://pubs.acs.org/doi/10.1021/ie50333a006https://doi.org/10.102…
I E N T summary of the early work on thin metallic films, performed prior to 1928, is provided by Bartlett(').The observations varied profoundlyA not only from one worker to another but also in the experiments of the same investigator performed under similar experimental conditions.As a result of these discrepancies,…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPermeability of Varnish FilmsHenry F. Payne and WM. Howlett GardnerCite this: Ind. Eng. Chem. 1937, 29, 8, 893–898Publication Date (Print):August 1, 1937Publication History Published online1 May 2002Published inissue 1 August 1937https://pubs.acs.org/doi/10.1021/ie50332a011h…
Heat-Qf-solution and ignition-loss methods have been developed for determining the degree of hydration of magnesia in hydrated dolomitic limes and in hydrated dolomitic lime putties. The rate of hydratiQn Qf magnesia in such limes has been studied when the limes were aged as putties at different temperatures, when sub…
Molecular structures of P4O6 and As4O6 were determined from electron diffraction data. P4O6 was found to have the symmetry of the point group Td with an angle P–O–P of 128.5±1.5°, and a P–O distance of 1.67±0.03A. In this structure the phosphorus oxygen distances and the phosphorus valence angles were preserved with r…
The current density in a focused beam of cathode rays is shown to have an upper limit defined by I = I0(Ee/kT+1) sin2φ, where I is the maximum current density obtainable in the focused spot, I0is the current density at the cathode, E is the voltage at the focus relative to the cathode, T is the absolute temperature of…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTInitial Corrosion Rate of Mild Steel Influence of the cationC. W. BorgmannCite this: Ind. Eng. Chem. 1937, 29, 7, 814–821Publication Date (Print):July 1, 1937Publication History Published online1 May 2002Published inissue 1 July 1937https://pubs.acs.org/doi/10.1021/ie50331a0…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTThe Vapor Pressure of Copper and IronA. L. Marshall, R. W. Dornte, and F. J. NortonCite this: J. Am. Chem. Soc. 1937, 59, 7, 1161–1166Publication Date (Print):July 1, 1937Publication History Published online1 May 2002Published inissue 1 July 1937https://pubs.acs.org/doi/10.1…
An attempt was made in a previously reported research (14) to determine the volumetric contraction occurring in the water adsorbed by cellulosic materials. Apparent density measurements of wood and cellulose containing various amounts of adsorbed water were made in benzene. Benzene causes no swelling of cellulosic mat…
The mathematical treatment of dipole-dipole coupling in my previous article on magnetism applies with but little modification to the electric case. Because of fluctuation effects, the use of the usual Lorentz local field E+4πP/3 and of the Clausius-Mossotti formula cannot be justified except as a first approximation v…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTGluconic Acid Production Effect of Pressure, Air flow and Agitation on Gluconic Acid Production by Submerged Mold GrowthsP. A. Wells, A. J. Moyer, J. J. Stubbs, H. T. Herrick, and O. E. MayCite this: Ind. Eng. Chem. 1937, 29, 6, 653–656Publication Date (Print):June 1, 1937Pu…
ADVERTISEMENT RETURN TO ISSUEArticleNEXTAn X-ray Diffraction Study of the Action of Liquid Ammonia on Cellulose and Its DerivativesG. L. Clark and E. A. ParkerCite this: J. Phys. Chem. 1937, 41, 6, 777–786Publication Date (Print):June 1, 1937Publication History Published online1 May 2002Published inissue 1 June 1937ht…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTThe Vapor Pressure of Phosphorus PentoxideJ. C. Southard and R. A. NelsonCite this: J. Am. Chem. Soc. 1937, 59, 5, 911–916Publication Date (Print):May 1, 1937Publication History Published online1 May 2002Published inissue 1 May 1937https://doi.org/10.1021/ja01284a042Request…
The system PbO-B20 3, of interest to investigators and manufacturers of ceramic glazes and glasses, was studied by well-known methods involving quenching and petrographic examination.In addition, limits of liquid immiscibility were obtained by direct observation.Seven crystalline forms of binary compounds were found a…
Abstract Die Verbindungen (NH 4 ) 2 SbBr 6 , Rb 2 SbBr 6 und Rb 2 SbCl 6 sind kubisch, flächenzentriert, mit Metallatomen in (8e), Antimonatomen in (4b) und Halogenatomen in (24a) (Bezeichnungen nach WYCKOFF). Die Gitterkonstanten wurden zu 10,69, 10,67 und 10,17 ± 0,02 Å und der Halogenparameter zu 0,243 ± 0,003 best…
Abstract Es wurden die Schmelzdiagramme einer Reihe von Oxyden gemischt mit CeO 2 untersucht. Alle Gemische ergaben nur ein einfaches Zusammenschmelzen bis auf Cr 2 O 3 welches eine Verbindung CeCrO 3 zeigte. Das CeO 2 wurde nur beim Schmelzen in Gemischen mehr oder weniger zu Ce 2 O 3 reduziert, allein erwies es sich…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTThe Formula of Ammonium ParamolybdateJ. H. SturdivantCite this: J. Am. Chem. Soc. 1937, 59, 4, 630–631Publication Date (Print):April 1, 1937Publication History Published online1 May 2002Published inissue 1 April 1937https://pubs.acs.org/doi/10.1021/ja01283a010https://doi.org…