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ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTIMMERSIONAL WETTING OF SOLID SURFACESA. C. ZettlemoyerCite this: Ind. Eng. Chem. 1965, 57, 2, 26–36Publication Date (Print):February 1, 1965Publication History Published online1 May 2002Published inissue 1 February 1965https://pubs.acs.org/doi/10.1021/ie50662a005https://doi.…
The smooth, nearly Gaussian, optical absorption band of $F$ centers in most alkali halides contrasts with that observed at low temperatures in the cesium halides, where two or sometimes three components are partially resolved. A strong spin-orbit coupling could account for two components, but the third has remained a…
The emission spectra of the tris and tetrakis forms of four β-diketone chelates of europium were studied in the solid powder, and in alcohol solution with and without dimethylformamide added. Partial dissociation of the tetrakis form was observed in solution. Effective site symmetries, subject to steric distortion, we…
Electron spin resonance data for [VOCl5]3— and [MoOCl5]2— in dilute single crystals are reported and and analyzed to give the spin Hamiltonian parameters for these complexes. A molecular orbital formulation is given for the spin Hamiltonian parameters, and terms dependent on spin—orbit interactions near ligand nuclei…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTDifferentilal Thermal Analysis and Reaction KineticsR. L. Reed, Leon Weber, and B. S. GottfriedCite this: Ind. Eng. Chem. Fundamen. 1965, 4, 1, 38–46Publication Date (Print):February 1, 1965Publication History Published online1 May 2002Published inissue 1 February 1965https:…
This paper reports experiments with KI to determine whether the near-uv emission characteristic of the "pure" crystal arises from the recombination of an electron with a ${V}_{K}$ center. KI crystals containing Tl or Eu, when irradiated at 77\ifmmode^\circ\else\textdegree\fi{}K with 1.7-MeV electrons, exhibit absorpti…
The quadrupole splitting of 57Fe Mössbauer spectra gives the magnitude, but not the sign, of the electric-field gradient. The sign can be determined by magnetically perturbing the energy levels, such that one line splits into a triplet and the other line splits into a doublet. A first-order perturbation treatment for…
Spiral etch pits are produced by etching natural graphite cleavage flakes in sodium peroxide. By etching matched cleavage faces, a correspondence has been found between the number, nature and position of the spiral etch pits on these faces. Similar correspondence has been found in the etch patterns produced on the two…
Abstract The crystallization kinetics of a sample of isotactic polystyrene have been measured at various temperatures. Despite the presence of secondary crystallization sufficient accuracy can be attained to enable an Avrami relationship with a constant integral value of n to be assigned to most of the rate curves. Th…
Views Icon Views Article contents Figures & tables Video Audio Supplementary Data Peer Review Share Icon Share Twitter Facebook Reddit LinkedIn Tools Icon Tools Reprints and Permissions Cite Icon Cite Search Site Citation J. H. Norman, H. Gene Staley, Wayne E. Bell; Mass‐Spectrometric Study of Gaseous Oxides of Iridiu…
Tetsuo Nozoe, Kahei Takase, Masao Tada; The Anionoid Substitution Reaction of Diethyl 6-Bromoazulene-1,3-dicarboxylate, Bulletin of the Chemical Society of
Abstract A number of commercial and experimental fluoropolymers were subjected to ionizing radiation at elevated temperatures and the changes in melt viscosity were measured as an indication of the degree of crosslinking or degradation which occurred. Polytetrafluoroethylene, polychlorotrifluoroethylene, polyhexafluor…
Abstract Numerous failures of aluminium–brass heat‐exchanger tubes and copper–nickel–iron sea‐water pipes in polluted estuarine sea‐water were found to be associated with sulphide films which stimulated pitting and stress‐corrosion cracking at holidays (breaks) in the film. The use of sodium dimethyl dithiocarbamate w…
Abstract The swelling of natural rubber vulcanizates under equal two‐dimensional compression has been investigated. The degree of crosslinking of the vulcanizate and the nature of the swelling liquid have both been varied. The reduction in equilibrium swelling produced by the stresses is found to agree well with theor…
The prediction that metal rich diboride compounds would exhibit superior oxidation resistance was verified. Studies were made of high pressure hot pressed Hf and Zr diborides, the most oxidation resistant diborides, at B/ metal ratios between 1.7 and 2.1. Measurements between 1200 and 2200 K at partial pressures of 7…
Based upon the recent observations that a slip dislocation in b.c.c. metals is associated with three twinning dislocations (Ogawa and Maddin 1964), the atomic configuration of the dissociated slip dislocation as well as those of mono-layer, two-layer and three-layer twins were studied in detail. The interfacial energi…
α-Zn 3 (PO 4 ) 2 crystallized in the monoclinic space group C2/c with lattice parameters a = 8.14 ± 0.02 Å, b = 5.63 ± 0.01 Å, c = 15.04 ± 0.04 Å, β = 105°08′ ± 05′, and Z = 4. The cations are found in two types of tetrahedrally coordinated sites. One-third of the cations lie on twofold axes within an oxygen tetrahedr…
A typical coated diamond has been examined by x-ray diffraction and absorption topography. At the commencement of the coat an abrupt change to fibrous, radial growth occurs. This radial mode of growth gives rise to the general spherical habit of thickly coated diamonds. In the specimen studied the range of misorientat…
Abstract The thermal conductivities of linear high polymers were studied experimentally and theoretically. A theory of thermal conductivity in linear amorphous high polymers was derived based on a simple model of molecular structure. Predictions on the effects of molecular weight and molecular orientation on thermal c…
Constitution of iron-germanium system is discussed based on x-ray and magnetic studies, and a new phase diagram is proposed. Fe solid solution (α) ranges up to 20.4 at.% Ge at 710°C and to 21.3 at.% Ge at 520°C. Homogeneity range of the most iron rich compound ( ε above 700°C and ε 1 below) are 23.8–26 at.% Ge at 710°…