The crystal structure of nickel hydride
Nickel hydride is face centered cubic. H occupies the octahedral sites with a H/Ni ratio equal to 0,6 ± 0,1.
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Investigation of the Photochemical Behaviour of ZnS Single Crystals
Abstract The photochemical effects of uv irradiation on ZnS single crystals are investigated. The crystals are exposed to short‐wavelength uv irradiation, in both high vacuum and a water vapour atmosphere. Certain crystals show weak photochemical decomposition even when irradiated in vacuum. An analysis of the experim…
Phase Equilibria and Manganese-Activated Luminescence in the Systems CdO-P[sub 2]O[sub 5] and Zn[sub 2]P[sub 2]O[sub 7]-Cd[sub 2]P[sub 2]O[sub 7]; Summary for the System ZnO-CdO-P[sub 2]O[sub 5]
The equilibrium relationships in the system and a portion of the system were constructed from quench, D.T.A., and high‐ temperature x‐ray data. The compatibility and solid solution relationships in the system are summarized. The pyrophosphate join is a simple eutectic‐type binary system with a maximum of soluble in an…
The Fracture of Titanium Dioxide Single Crystals with Particular Reference to Non‐Stoichiometry
Abstract Rutile (TiO 2 ) single crystals of various degrees of stoichiometry have been compressed at temperatures in the range 600 to 1300 °C; there is no ductility below 600 °C. Cleavage has been observed on (100), (110) and (101) planes, the exact mode of fracture being dependent on orientation and composition. Thes…
The 1010° and 800°C Isothermal Sections in the System Na[sub 3]AIF[sub 6]-AI[sub 2]O[sub 3]-SiO[sub 2]
Isothermal sections at 1010° and 800°C have been determined in the system by the quenching technique. A determined solubility of system at 1010°C is in good agreement with recent revisions of that binary melting diagram. The steep nature of the corundum liquidus curve in the system is found to continue into the ternar…
The Mechanism of Protection by Organic Coatings
(1964). The Mechanism of Protection by Organic Coatings. Transactions of the IMF: Vol. 41, No. 1, pp. 121-126.
MOLTEN-SALT REACTOR EXPERIMENT
Materials and components used in the MSRE are described and design data are given. The objectives of the program are discussed. (P.C.H.)
The Oxidation of Pyrolytic Graphite at Temperatures of 1400°–1800°F and at Air Velocities of 25–100 cm/sec
Abstract not Available.
Étude cristallographique de sulfures de terres rares et de sodium
On décrit deux catégories de sulfures de terres rares et de sodium. Dans les deux cas, la terre rare T et l'ion Na ont la coordinence six. La première catégorie comprend les terres rares T = La, Ce, Pr, Nd. La structure peut être considérée comme étant du type NaCl, lacunaire et désordonnée. Les anions S forment un pa…
Étude sur la structure magnétique de FeCr2O4
Nous avons étudié FeCr2O4 dans le but de déterminer sa structure magnétique. A la température de 4,2 °K la structure est certainement différente du modèle Yafet-Kittel et peut, en première approximation, être considérée comme une spirale ferrimagnétique du même type que celle proposée par Hastings et Corliss dans le c…
Magnetism of Dilute Alloys
Dilute ferromagnetic alloys with iron, nickel, or cobalt as host metal and dilute alloys of transition metals with hosts such as copper, gold, silver, or zinc were studied using the Mossbauer effect. (R.E.U.)
Gallium-Palladium Alloys as Dental Filling Material
The remarkable ability of liquid gallium to wet the surfaces of many solids, including human teeth (1), has stimulated interest in gallium alloys as possible filling materials in dentistry (1, 2). A number of gallium alloys which possess some of the properties necessary in dental filling materials have been reported (…
The Reaction of Oxides with Water at High Pressures and Temperatures
Abstract The reactions of the oxides SiO 2 , MoO 3 , and WO 3 with steam at temperatures between 400 and 700 °C and pressures of 5 to 500 atm were studied by means of the transfer method. The results were evaluated by a new method. In the system Sio 2 /H 2 O the formation of gaseous Si(OH) 4 , Si 2 O(OH) 6 , and [SiO…
Displacement Threshold Energy and Focuson‐Impurity Interaction in Copper near 10 °K
Abstract The increase in resistivity of Cu single crystals oriented near 〈110〉 and 〈111〉 is measured as a function of integrated electron flux at various electron energies below 1 MeV. Specially prepared thin single crystals of about 0.1 mm thickness are used. It is found that the damage production curves thus obtaine…
X-RAY STUDY OF TRIDYMITE (3)
Four phases named S1, S2, S3 and S4 in tridymite of type S were confirmed on the close examination of the change of X-ray powder reflections with increasing temperatures.Unit cell dimensions are: S1; monoclinic, a=10.04Å, b=17.28Å, c=8.20Å, β=91.50°, S2; orthorhombic, a=10.04Å, b=17.28Å, c=8.20Å, S3; domain structure,…
Melting and Pre-Melting Phenomena in Alkali Metal Nitrates.
ADVERTISEMENT RETURN TO ISSUEPREVarticleNEXTMelting and Pre-Melting Phenomena in Alkali Metal Nitrates.G. J. Janz, F. J. Kelly, and J. L. PeranoCite this: J. Chem. Eng. Data 1964, 9, 1, 133–136Publication Date (Print):January 1, 1964Publication History Published online1 January 1964Published inissue 1 January 1964http…
739. Stability constants and spectra of some lanthanide complexes
J. C. Barnes, J. Chem. Soc., 1964, 3880 DOI: 10.1039/JR9640003880
Some Observations on the Growth Mechanism of Hard Anodic Oxide Coatings on Aluminium
SummaryIn general, Keller, Hunter and Robinson's theory will explain the reactions taking place during the anodic oxidation of aluminium and many of the properties of the coatings. However, there are instances where observations do not agree with this theory. For example, when aluminium is anodized under special condi…
The Fluorescence of the Europium and Terbium Dibenzoylmethides
Data on the fluorescence spectra, fluorescence lifetimes, and the temperature dependence of these quantities for the dibenzoylmethane chelates of europium and of terbium in a variety of environments are presented. The effect of the environments studied on the europium chelate is much more pronounced than on the terbiu…
623. The colour isomerism and structure of copper co-ordination compounds. Part VII. The crystal of bissalicylaldehydatocopper(II)
A. J. Mckinnon, T. N. Waters and D. Hall, J. Chem. Soc., 1964, 3290 DOI: 10.1039/JR9640003290