Materials Literature
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Reflection spectra have been measured in the spectral region of the second and the third order selective reflections for monodomain cholesterics of various cell thicknesses at various angles of incidence. Thicker cells give rise to higher reflectance at larger angles of incidence. The second order reflection region co…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMagnetic circularly polarized luminescence spectra of Eu(.beta.-diketonate)3X2 complexes in nonaqueous solutionDavid R. Foster, F. S. Richardson, L. M. Vallarino, and D. ShilladyCite this: Inorg. Chem. 1983, 22, 26, 4002–4009Publication Date (Print):December 1, 1983Publicati…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTRaman spectroscopic and spectrophotometric study of the system potassium pyrosulfate-potassium hydrogen sulfate in the temperature range 200-450.degree.CRasmus Fehrmann, Niels Holger Hansen, and Niels J. BjerrumCite this: Inorg. Chem. 1983, 22, 26, 4009–4014Publication Date…
A number of variables are important in controlling the exothermic reaction of cast materials. These reactions can reach temperatures capable of producing burns. The most important variables are plaster type, cast thickness, and the presence of externally applied materials, e.g., vinyl pillows. Moderately important fac…
When studying the compounds of the PbNb0.5B0.5O3 series it has been established that with a critical ionic radius RB = 0.85Å there occurs a transition from ferroelectric (B-Cr, Fe, Mn, Sc, In) to antiferroelectric (B-Lu, Yb, Tm). The structure of crystals and polycrystalline specimens has been studied by X-ray diffrac…
The transition between the monoclinic fl and orthorhombic a' phases of strontium orthosilicate was investigated by single-crystal diffractometry and polarizing microscopy at variable temperatures, on the basis of the disappearance or appearance of twin domains of the fl form. The phase change occurred sharply with the…
A wide range of experimental data from several sources, and covering most of the factors known to influence water tree growth, has been collated and assessed in terms of the independent growth parameters. Systematic trends have been identified wherever possible, allowing a critical evaluation of the postulated treeing…
Abstract Sodium metavanadate (NaVO 3 ) has been reported earlier to exhibit ferroelectric behaviour below 380 °C, but unlike many other known ferroelectrics it does not show a very strong dielectric anomaly, indicating that the structural change during the ferroelectric phase transition may be only a slight modificati…
Dense-packed assemblies of hard spheres are standard models of disorder in metallic glasses. Such packings are difficult to obtain with identical disks on flat two-dimensional surfaces because triangular packing units are easily incorporated into a hexagonal close-packed lattice. By packing disks on a two-dimensional…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPreparation and structure of [Cu3(dpm)3(OH)]2+[BF4]2-Douglas M. Ho and Robert BauCite this: Inorg. Chem. 1983, 22, 26, 4079–4083Publication Date (Print):December 1, 1983Publication History Published online1 May 2002Published inissue 1 December 1983https://pubs.acs.org/doi/10…
Calcium silicate hydrate (C‐S‐H) can be viewed as a solid solution, 0.833Ca(OH) 2 .SiO 2 .0.917H 2 O‐xCa(OH) 2 , at equilibrium at 30°C. On this basis, the change in Gibbsfree energy (ΔG r ) in the solid‐solution reaction was calculated from solubility duta for C‐S‐H in water. The change in ΔG r with real ratio decrea…
Dissolution characteristics of mixed-oxide nuclear fuels are important considerations for prediction of biological behavior of inhaled particles. Four representative industrial mixed-oxide powders were obtained from fuel fabrication enclosures. Studies of the dissolution of Pu, Am and U from aerosol particles of these…
In order to elucidate the role of W in improving the passivity of austenitic stainless steels, anodic polarization curves and X-ray photoelectron spectra have been obtained for pure W and W-containing steels passivated in 1 N HCl, 0.1 M NaCl, and in Cl−-containing H3PO4. Similar experiments were also performed on Cr-N…
An investigation is made of the vectorial and geometrical representation of the polarization of light propagating through a weakly inhomogeneous absorbing anisotropic and optically active medium. When the approximations of geometrical optics are used, Maxwell’s equations lead to the equation ∂G/∂x3 = (i/2)(Ω + iT)G, g…
Summary Dialysis and re‐suspension of red‐brown earths showed dispersion in distilled water independent of the adsorbed cations. Whenever the electrolyte concentration is below the critical coagulation concentration the soil and clay will disperse. Mechanical disturbance greatly enhances the dispersion process. The ex…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTA tetranuclear platinum compound containing two diamagnetically coupled platinum(III) atoms: x-ray structural analysis of bis[bis[.mu.-.alpha.-pyrrolidonato(1-)-N2O2]bis[cis-diammineplatinum(II, III)]](Pt-Pt) hexanitrate dihydrate, [Pt4(NH3)8(C4H6NO)4](NO3)6.2H2OKazuko Matsu…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTAnalysis of the proton and carbon-13 NMR spectra of [Ir(Hbpy-C3,N')(bpy-N,N')2]3+: evidence for a carbon-bonded structurePeter J. Spellane, Richard J. Watts, and Calvin J. CurtisCite this: Inorg. Chem. 1983, 22, 26, 4060–4062Publication Date (Print):December 1, 1983Publicati…
Calorimetric measurements have been carried out on specimens of natrolite, mesolite, and scolecite in order to assess the thermodynamic properties of a zeolite series having the same alumino-silicate framework. Low-temperature heat capacity and high-temperature enthalpy increments of natrolite and scolecite were measu…
Abstract Neutron scattering studies have indicated that the non-coordinated water at smectite surfaces has a similar mobility to that of bulk water, but that the water coordinated to the cations is immobile on the time scale of the neutron measurements. Thus hydrophylic polymers can readily displace the non-coordinate…
The Dutch experience with pellet reactors is reviewed, with special emphasis on a new reactor concept based on crystallization on a seeding material with sodium hydroxide. During long‐term, full‐scale operations this concept has provided low‐cost softening and eliminated problems with solids disposal.