Materials Literature
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Crystals of K2S5 are orthorhombic, space group P212121 with Z= 4 in a unit cell of dimensions: a= 6.494(1), b= 6.600(2), c= 17.414(5)Å. The structure has been elucidated by vector methods from 656 independent diffracted intensities measured on a four-circle diffractometer and refined to R 0.045. The [S5]2– anion exist…
Abstract The disproportionation of thiosulfate, trithionate, tetrathionate and sulfite in acidic solutions has been studied at relatively high temperatures. Thiosulfate hardly decomposes in the absence of sulfuric acid, even at 150 °C, but decomposes very easily in the presence of sulfuric acid at 70 °C, forming eleme…
The phase diagrams for the mixtures of p-cyanophenyl-p-alkylbenzoates and p-alkoxycarbonyl-oxyphenyl p-butyloxybenzoates were investigated. The Schröder-Van Laar equation was found inapplicable for calculations of composition, eutectic-mixture melting points and crystalline-nematic transition heats of these compounds.
This series was organized to provide a forum for review papers in the area of corrosion. The aim of these reviews is to bring certain areas of corrosion science and technology into a sharp focus. The
The subsolidus compatibility relations in the system SrO‐B 2 O 3 ‐ SiO 2 were determined by solid‐state reaction techniques and X‐ray powder diffraction methods. The system was found to contain 11 subsolidus compatibility relations, one stable ternary compound (Sr 3 B 2 SiO 8 ), and one metastable ternary compound wit…
Organized bone ingrowth in endosteal porous implants fabricated from VMC titanium alloy and surgically implanted with a tight interference fit, securely anchored the implants in fresh and healed mandibular premolar sites of miniature swine. This bone-implant union retained its integrity under high as well as slight ma…
Experimental results are presented for the thermal conductivity of P-doped Si over the concentration range 2.5 x 10^14 to 1.1 × 10^18 cm-3 in the temperature region 1.5-50 K. In the low concentration range, phonon scattering by isolated P donors is very weak in contrast with that by Group-V donors in Ge and Li donor i…
When human subjects are irradiated with pulse modulated microwave energy they report the perception of a sound that appears to originate from within or slightly behing the head. Three of the possible mechanisms are examined using first order mathematical approximations and several simplifying assumptions. The results…
This research explores the basic hypothesis that microporosity may play a significant role in the mechanism of breakdown of XLPE cable. The potential improvement achieved by impregnating the cable core with a neutral liquid is evaluated, in relation to ac voltage life and impulse strength. The effect at higher frequen…
The structure and dynamics of “graphon”, a carbon black, have been characterised by a combination of neutron diffraction and inelastic scattering experiments. The techniques employed were those of neutron diffraction, time-of-flight and beryllium-filter spectroscopy.The dimensions of the unit cell were found to be: a=…
The three independent components of the second order Raman spectra of SrTiO3 have been measured at 300 K. They show a strong similarity to the second order spectra of SrO. Very recently, the lattice dynamics1 and the Raman spectra of SrO have been successfully explained on the basis of a nonlinear shell model. It is s…
Abstract Organic volatiles formed in the thermooxidation of polyethylene at 150 and 160°C, 760 torr oxygen pressure were investigated by gas chromatographic analysis. Aldehydes and ketones having a linear chain were identified as the major components of the organic fragments investigated. Their concentration in the ga…
The crystal structure of the title compound (I) has been determined by symbolic-addition and rotation-function procedures and refined by full-matrix least-squares methods to R 0.063 for 568 observed reflections. Crystals are triclinic, space group P, with Z= 2 in a cell of dimensions a= 5.83(2), b= 5.78(2), c= 7.31(2)…
ABSTRACT Rates of lactose crystallization from solutions of constant alpha lactose concentration were determined at temperatures of 15–50°C. Commercially produced crystalline lactose was used as the seed material. Surface integration rather than diffusion of alpha lactose to the crystal surface was the rate controllin…
A wide variety of anodic oxide films were investigated from the photoluminescent point of view. It was found that the phenomenon of photoluminescence appears only on the films anodically formed in organic acids instead of inorganic acids. In particular, thick oxalic acid films formed in low electrolyte concentration,…
The hysteresis characteristics of stabilized Pb(Ti, Zr)3 ceramics are normally described by the introduction of an internal bias field. It is shown that the domain reversals are controlled by this field but that this field does not really exist inside the ceramic grains. A stabilization model describing the field dist…
Weight loss trials, potential'time, and potentiostatic polarisation curves have been used to study the inhibitive properties of zinc gluconate (ZnGl) towards the corrosion of mild steel in sea water. ZnGl completely protects mild steel in stagnant sea water at concentrations ≥ 1 × 10−3 mol/l; at concentrations between…
The applicability of a newly devised technique, based on the Wilhelmy principle, for measuring wetting properties of textile fibers has been demonstrated for a series of wood pulp fibers. The wettability of unbleached kraft, neutral sulfite semichemical (NSSC), and thermomechanical pulp fibers was determined and diffe…
Fine-grained PLZT and TiO2 ceramics subjected to applied electric fields can, depending upon composition and temperature, undergo disorder-order structural transformations that carry the materials from non-polar to polar structures. This paper proposes that the observed transformations are the result of crystallograph…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTStereochemistry of carboxylate complexes. Crystal structure of (-)598-malatodiaquomanganese(II) hydrateAnastas. Karipides and A. Thomas. ReedCite this: Inorg. Chem. 1976, 15, 1, 44–47Publication Date (Print):January 1, 1976Publication History Published online1 May 2002Publis…