Materials Literature
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A set of thermoviscoplastic nonlinear constitutive relationships (TVP-NCR) is presented. This set is unique and has been developed mainly for application to high-temperature metal matrix composites (HT-MMC) and is applicable to thermal and mechanical properties. Formulation of the TVP-NCR is based at the micromechanic…
Abstract High-resolution solid-state 1H and 31P NMR revealed that there were at least three different states for protons of H3PW12O40·nH2O; (i) protons present in highly hydrated samples, (ii) protonated water which is hydrogen-bonded to terminal oxygen, W = O···H+ (H2O)2 (n \doteqdot 6), and (iii) proton which is dir…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTDiffusive anion exchange in polypyrrole filmsLarry S. Curtin, Glenn C. Komplin, and William J. PietroCite this: J. Phys. Chem. 1988, 92, 1, 12–13Publication Date (Print):January 1, 1988Publication History Published online1 May 2002Published inissue 1 January 1988https://pubs…
Abstract A simple model is developed to explain the measured temperature dependence of the growth rate of polymerfilms in a C 6 H 6 ‐Ne‐glow discharge. The negative Arrhenius‐behaviour obtained that means a decreasing growth rate with increasing temperature — is determined by an adsorption‐desorption‐equilibrium of th…
Silicon carbide has been grown at 1100 to 1400 °C by chemical vapor deposition using CH3SiCl3 and H2 gaseous mixture onto a graphite substrate. The effect of deposition temperature, total system pressure, and the CH3SiCl3 input fraction on growth characteristics and structure of deposits has been studied. The experime…
Macromolecular assemblies can be self-organized into patterns with controllable feature sizes ranging from ∼10 Å to ∼100 μm. Smallest features are produced by organizing macromolecules into a Langmuir–Blodgett film. Using this method, we have produced quasiperiodic arrays of metal oxide islands with peroidicities as s…
1. Equilibrium of Chemical and Electrochemical Reactions. Galvanic cells. The potential of the cell reaction. The electrodes. Equilibria potential expressed by the formal potential. Equilibrium of the cell reaction. Electrochemical equilibrium diagrams. The equilibrium diagram of water. Electrochemical equilibrium dia…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTDielectric normal mode process in semidilute and concentrated solutions of cis-polyisopreneKeiichiro Adachi and Tadao KotakaCite this: Macromolecules 1988, 21, 1, 157–164Publication Date (Print):January 1, 1988Publication History Published online1 May 2002Published inissue 1…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTHigh-valent iron phthalocyanine .mu.-nitrido dimersClaudio Ercolani, Marcello Gardini, Giovanna Pennesi, Gentilina Rossi, and Umberto RussoCite this: Inorg. Chem. 1988, 27, 2, 422–424Publication Date (Print):January 1, 1988Publication History Published online1 May 2002Publis…
The preparation of the 2,3,9,10,16,17,23,24-octabutoxyphthalocyanine zinc complex (1) is described. The electron-donating groups influence the properties of the compound. The oxidation–reduction potentials studied by cyclic voltammetry in solution shift by ca. 20 mV in the cathodic direction showing easier oxidation a…
A statement of the general principles of capillary condensation in porous networks and the ascertainment of its particularities for a given structure are difficult, since either independent or dependent vapour–liquid transitions arise at each point of the network and also because porous materials occurring in nature a…
Abstract Three possible locations on clay minerals exist where Cd can be sorbed by ion exchange. These are the external planar, interlayer, and edge surfaces. In this study, montmorillonite, kaolinite, vermiculite, and biotite minerals were used to separate these sorption sites. The vermiculite and biotite were fracti…
Luminescence and decay-time measurements are presented for ${\mathrm{Sb}}^{3+}$-doped ${\mathrm{YPO}}_{4}$, ${\mathrm{LuPO}}_{4}$, and ${\mathrm{ScPO}}_{4}$. In these phosphates (with tetragonal zircon structure) only one crystallographic position is available for the ${L}^{3+}$ions (L=Sc,Lu,Y). The emission of the ${…
The fiber-optic-conveyed, laser-induced fluorescence of a thermographic phosphor was used to measure the surface temperature of the rotor in an operating permanent-magnet motor. The technique uses a pulsed laser to interrogate a surface-bonded film of europium-doped lanthanum oxysulfide for the purpose of determining…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSolubility of synthesis gases in heavy n-paraffins and Fischer-Tropsch waxStanley H. Huang, Ho Mu Lin, Fuan Nan Tsai, and Kwang Chu ChaoCite this: Ind. Eng. Chem. Res. 1988, 27, 1, 162–169Publication Date (Print):January 1, 1988Publication History Published online1 May 2002P…
Solvent-cast films of polycarbonate (PC)/polymethyl methacrylate (PMMA) mixtures exhibit a single-phase structure with outstanding optical clarity. Differential scanning calorimetry (DSC) studies show a single glass transition in the intermediate blends. However, the blends undergo phase separation upon heating above…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTLaser-induced optical emission studies of europium(3+) sites in polycrystalline powders of monoclinic and bcc. europium sesquioxideK. C. Sheng and G. M. KorenowskiCite this: J. Phys. Chem. 1988, 92, 1, 50–56Publication Date (Print):January 1, 1988Publication History Publishe…
Stable colloidal dispersions of polypyrrole latex particles in water and methanol (charge-stabilised), and in dioxane (sterically stabilised) have been prepared; the particles have a conductivity of ca. 1–2 S cm–1.
Дефекты в жидких кристаллах: гомотопическая теория и экспериментальные исследования, Курик М.В., Лаврентович О.Д.
Crystallographic concepts are extended to quasicrystalline structures and applied to icosahedral quasicrystals. 2-dimensional N fold rotational symmetries are shown to be compatible with Bravais lattices in (at least) ϕ (N) dimensions, where ϕ (N) is the Euler number, while for 3-dimensional icosahedral symmetry the m…