Materials Literature
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[Es wird nachgewiesen, dass Pseudosida szalayi Daday synonym ist mit P. bidentata Herrick. Latonopsis fasciculata Daday wird als Synonym von Pseudosida tridentata Herrick angesehen, die Benutzung des Namens P. tridentata jedoch abgelehnt, weil seine erste Anwendung einen Bruch der Nomenklaturregeln darstellte. Es wird…
The thermodynamic properties of solutions of in were determined by emf measurements over the concentration range unity to 10 −3 mole fraction and the temperature range 800° to 925°C. The solutions behaved nearly ideally under all conditions with small deviations, if any, in the positive direction. The solvent effect o…
J. D. Donaldson, W. Moser and W. B. Simpson, J. Chem. Soc., 1961, 839 DOI: 10.1039/JR9610000839
On the anodic passivation of metals, two different processes, (A) precipitation from a super-saturated solution and (B) direct reaction between a metal and solution, have been previously considered for the anodic formation of passive oxide film. Both of these mechanisms were criticized from the kinetic point of view t…
SYNOPSISThe morphology of pits in decorative nickel+chromium coatings resulting from service corrosion in an industrial atmosphere has been compared with that of pits produced in accelerated corrosion tests. Corrosion in the three accelerated tests examined and in the early stages of service corrosion was frequently c…
Studies have been made on the problems of the glass formation range, which are important as the fundamental data for the science and industry of glass, and the systematic investigation of which has never been carried out.Borate systems were studied using, except B2O3, the oxides of 16 a-group elements-Li, Na, K, Be, M…
W. G. Palmer, J. Chem. Soc., 1961, 1552 DOI: 10.1039/JR9610001552
The importance of suitable seeds in dendritic growth of long ribbons of semiconductors is discussed, and investigations to determine the characteristics of suitable seeds are reported. Studies of growth buttons have yielded information about the initiation of spontaneous and also controlled dendritic growth from butto…
When solid heterocyclic dicarboxylic acids and their hexamethylenediammonium salts are heated in a sealed system, temperature‐pressure diagrams are obtained which allow the determination of the exact temperature at which decarboxylation starts. Some decarboxylation points are indicated.
A tracer study has been made of the polymerization of acrylonitrile in an aqueous solution at 25°C with the use of radioactive K2S352O8 and NaHS35O3 in a redox catalyst system. Persulfate and bisulfite give sulfate and sulfonate endgroups, respectively. The contents of these endgroups in the polymer were determined an…
The crystal structure of CuOHCl has been determined by X‐ray single crystal methods. The structure was refined by F OURIER methods and by three‐dimensional « least square» treatment. CuOHCl has a monoclinic cell with
It is demonstrated that the presence of surface oxide films on aluminum, prior to anodizing in a pore‐forming electrolyte, can reduce the number of surface pores and the surface roughness compared to that normally obtained with fresh aluminum surfaces. Electron micrographs show that, in such a case, porous anodization…
Exploratory experiments are described followed by an account of a more systematic study of the corona discharge with concentric-cylinder electrodes. From experimental records which relate the charge flow in an external circuit to the applied voltage, the corona current and energy loss were derived. An attempt is made…
R. J. Abraham, A. H. Jackson and G. W. Kenner, J. Chem. Soc., 1961, 3468 DOI: 10.1039/JR9610003468
This paper summarizes the measurements which have been made to determine various physical parameters for the compounds Ga 2 Te 3 and In 2 Te 3 . The previously described problems of the preparation of stoichiometric In 2 Te 3 and Ga 2 Te 3 and the associated question of ordering of lattice vacancies in In 2 Te 3 are r…
Electron spin resonance of a water solution and of the pure powder of K3[Cr(CN)5NO]·H2O reveal a single sharp resonance line at room temperature. The water solution resonance gives a Cr53 hyperfine structure which is further split by a ``superhyperfine'' structure due to the nitrogen in the NO ligand. From the electro…
Nach der Barrerschen Methode werden die Permeations-, Diffusions- und Löslichkeitskoeffizienten permanenter Gase in Terylen und Polypropylen verschiedenen Kristallisationsgrades bestimmt. Die drei Größen sind bei den kristallisierten Stoffen gegenüber den entsprechenden amorphen erheblich erniedrigt. Ebenso verhält es…
The action of water at 100°C on barrier anodic aluminum oxide has been studied for reaction times up to 30 min. The hydrated product is essentially the same as that formed when aluminum metal reacts with water under the same conditions. Furthermore, the rate of hydration of anodic oxide is remarkably similar to the ra…
Abstract The polycondensation reaction of hexamethylenediammonium adipate (nylon 66 salt) has been studied in the presence of water in 0.5–10.0 molar ratio. The reaction proceeds extremely fast and reaches equilibrium after about 5 hours at 200‐220°C. The apparent equilibrium constant between chain molecules increases…
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