Materials Literature
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Cathodic and anodic behaviour of aluminium has been investigated in AlCl3DMSO2—dimethylsulfone—(1 mole/kg) electrolyte at 130 °C by current reversal chronopotentiometry (CRC) and chronoamperometry. Al deposition study showed that a diffusion-limited current density close to 83 mA cm−2 is reached for potentials less th…
Abstract Polyurethane elastomers were investigated as electrically active materials for actuators. Components in hard segment and soft segment in the elastomers were varied. The elastomers with excellent electrostrictive properties were limited to those which had soft segments of polyesters and polylactones. It turned…
Other| August 01, 1996 Heat capacity and thermodynamic properties of nearly stoichiometric wustite from 13 to 450 K Svein Stolen; Svein Stolen University of Oslo, Department of Chemistry, Oslo, Norway Search for other works by this author on: GSW Google Scholar Ronny Glockner; Ronny Glockner Search for other works by…
The chemical structure of sodium aluminosilicate glasses is determined by high resolution x-ray photoelectron spectroscopy (XPS) as silicon is gradually replaced by aluminum. A well-defined chemical state is found for silicon, aluminum, and sodium atoms, while three different environments are identified for oxygen ato…
Abstract The changes in amount and location of layer charge during diagenetic alteration have been investigated for smectites and smectite layers of illite/smectite interstratified minerals (I/S) by X-ray powder diffraction analysis with various expansion behavior tests: 1) ethylene glycol (EG) solvation (XRD); 2) K-s…
The electrochemical corrosion potential (ECP) of stainless steel (SS) was measured under simulated boiling-water reactor (BWR) coolant circuit conditions using a rotating cylinder electrode (RCE). Based upon those measurements, an empirical model was developed to predict ECP of structure materials in a BWR primary cir…
Abstract The excitation and emission spectra of CaWO4, MgWO4, PbWO4, ZnWO4, and CaMoO4 were analyzed by a configurational coordination model. The spectral line shapes simulated by a configurational coordination model with a singlet ground state and an excited triplet state well explained the line shape of the luminesc…
The deep-level photoluminescence (PL) emission in the 1.1 eV spectral region in p-type CdTe:Cl polycrystalline samples was studied as a function of the excitation laser power and temperature. The relatively broad 1.1 eV PL band has a nonsymmetrical shape which can be easily changed by varying the excitation laser powe…
The CaO–MgO system is used as a prototype system to evaluate the accuracy of several energy and entropy approximations for predicting solid‐state phase diagrams in ionic materials. Configurational disorder between the cations is parameterized with the cluster expansion technique. The vibrational contribution to the fr…
A homologous series of heterocyclic liquid crystals containing the quinoline unit have been synthesized and characterized. These compounds show a smectic phase at low temperatures. The quinoline unit containing lone pair electrons introduces a significant dipole moment resulting in attractive forces to form a smectic…
Abstract This question was addressed using various methods to monitor the process of curing and state of the final network. Attention was particularly focused on the possible inhomogeneous network formation as a consequence of the crosslinking process. An analysis of experimental data has revealed that some cured resi…
The internal stress and strain in boron-doped diamond films grown by microwave plasma chemical vapor deposition (MWCVD) and hot filament CVD (HFCVD) were studied as a function of boron concentration. The total stress (thermal+intrinsic) was tensile, and the stress and strain increased with boron concentration. The str…
Gallium is a metal that literally melts in your hand. It has low toxicity, near-zero vapor pressure, and a viscosity similar to water. Despite possessing a surface tension larger than any other liquid (near room temperature), gallium can form nonspherical ...Read More
Abstract The electronic effect of substituting CH with N in poly(pyrazolyl)‐borato ligands and their transition‐metal complexes is shown to be a decrease in energy of the filled metal and ligand orbitals. This conclusion is based on the cyclovoltammograms and photoelectron spectra of bis(hydrotris(azolyl)borato)‐iron(…
Other| August 01, 1996 Light-induced variations in realgar and beta -As 4 S 4 ; X-ray diffraction and Raman studies P. Bonazzi; P. Bonazzi Universita di Firenze, Dipartimento di Scienze della Terra, Florence, Italy Search for other works by this author on: GSW Google Scholar S. Menchetti; S. Menchetti Search for other…
We report magnetic properties and magnetic relaxation phenomena in a sample comprised of nanocrystalline ${\mathrm{CoFe}}_{2}$${\mathrm{O}}_{4}$ (\ensuremath{\sim}97%)+\ensuremath{\gamma}-${\mathrm{Fe}}_{2}$${\mathrm{O}}_{3}$ (\ensuremath{\sim}3%) and polymer in potassium silicate (as magnetic glass) nanoparticle syst…
The electrochemistry and electrogenerated chemiluminescence (ECL) of a series of europium chelates, cryptates, and mixed-ligand chelate/cryptand complexes were studied. The complexes were of the following general forms: EuL(4)(-), where L = β-diketonate, a bis-chelating ligand (such as dibenzoylmethide), added as salt…
Synthetic polymers are the most widely used materials for packaging because of their ease of processing, low cost, and low density. However, many of these materials are not easily recyclable and are difficult to degrade completely in nature, creating environmental problems. Thus, there is a tendency to substitute such…
Abstract Experiments on thermal decomposition of calcium carbonate were carried out in a thermogravimetric analyser under non‐isothermal conditions of different heating rates (10 to 100°C/ min). A new technique for determining the kinetic parameters from non‐ isothermal thermogravimetric data was described. The activa…
This article concerns the functionalization of polypropylene (PP) with oxazoline functionality by melt free radical grafting along with a low degree of degradation of PP in a batch mixer. A low volatile oxazoline, ricinoloxazoline maleinate (OXA), was used as the monomer. The grafting yield of OXA ranged from about 0.…