Showing papers on "Binary system published in 1987"
TL;DR: A very extensive literature survey of all available phase diagram and thermodynamic data has been carried out for all 40 possible common-anion binary systems (AX•BX) and all 30 possible commoncation binary systems involving the alkali halides (A,B =Li,Na, K,Rb,Cs; X,Y=F,Cl,Br,I).
Abstract: A very extensive literature survey of all available phase diagram and thermodynamic data has been carried out for all 40 possible common‐anion binary systems (AX‐BX) and all 30 possible common‐cation binary systems (AX‐AY) involving the alkali halides (A,B =Li,Na,K,Rb,Cs; X,Y=F,Cl,Br,I). A critical analysis and evaluation of these data have been performed with a view to obtaining a ‘‘best’’ evaluated phase diagram and a set of ‘‘best’’ evaluated thermodynamic parameters for each system. To this end, a computer‐assisted coupled analysis of the phase diagram data and the thermodynamic data for each system has been employed. Mathematical expressions for the thermodynamic properties of all known phases have been obtained which are consistent with the measured thermodynamic properties and phase diagrams as well as with established thermodynamic principles and theories of solution behavior. The parameters of these expressions are reported here and have been used to generate the computer‐calculated diagrams in the compilation.
221 citations
TL;DR: In this paper, the authors reviewed the data and information available through March 1985 on the various thermodynamic properties of five binary aluminum alloy systems: AlFe, AlMn, AlNi, AlSi, and AlTi.
Abstract: This work reviews the data and information available through March 1985 on the various thermodynamic properties of five binary aluminum alloy systems: Al–Fe, Al–Mn, Al–Ni, Al–Si, and Al–Ti The thermodynamic properties covered in this work are heat capacity, Gibbs energy, enthalpy, and entropy of formation Existing data have been evaluated and analyzed The values for heat capacity and room‐temperature enthalpy of formation for a large number of alloys have been generated For each of the binary alloy systems, the recommended values for integral Gibbs energy, enthalpy, and entropy of formation as well as the partial quantities, activity, and activity coefficients for each component covering the entire composition range have been reported These values are reported for both solid and liquid alloys
164 citations
Book•
01 Jan 1987
TL;DR: In this paper, the authors present a model of liquid-liquid equilibria in binary systems and quantitatively calculate the parameters of the empirical relationship for the excess Gibbs energy for heterogeneous systems.
Abstract: I. The Basis of the Thermodynamic Description of Non-Electrolyte Solutions. Introduction. Basic thermodynamic relationships. Equilibrium conditions at constant temperature and pressure. Conditions for thermodynamic stability and the critical point. The nonclassical behaviour of systems in the critical region. Empirical and semi-empirical equations for the concentration dependence of the Gibbs energy. The dependence of the excess Gibbs energy on temperature. II. Liquid-Liquid Equilibria in Binary Systems. The shape of the equilibrium curve (liquid-liquid equilibrium) for binary systems. Description of the behaviour of binary systems using the relationship for a strictly regular solution. Calculation of the compositions of coexisting phases in a binary system. Calculation of the parameters of the empirical relationships for the excess Gibbs energy for heterogeneous systems. Parameter calculation in empirical relationships for the Gibbs energy for homogeneous binary systems. III. Liquid-Liquid Equilibria in Ternary and Multi-Component Systems. The shape of the equilibrium curve (envelope) in ternary and quaternary systems. The concentration dependence of the excess Gibbs energy for multi-component systems. Modelling of liquid-liquid equilibria in ternary systems. Calculation of the compositions of coexisting phases in multi-component systems. Calculation of the critical point. Calculation of the parameters in the empirical relationships for the excess Gibbs energy from data on liquid-liquid equilibria in ternary systems. Prediction of liquid-liquid equilibria and empirical relationships used to describe liquid-liquid equilibria in ternary systems. Experimental determination of liquid-liquid equilibria. Appendices. References. Index.
152 citations
TL;DR: In this paper, the evolution of an ultracompact binary wherein mass transfer is driven by the emission of gravitational radiation is calculated, emphasizing the systematic study of how the rate of change in orbital period depends on the various system parameters.
Abstract: The evolution of an ultracompact binary wherein mass transfer is driven by the emission of gravitational radiation is calculated, emphasizing the systematic study of how the rate of change in orbital period depends on the various system parameters. Analytic scaling laws are derived describing how the mass of the secondary, the mass transfer rate, and the rate of change of period depend on the binary system parameters, and these simple relations are applied to the 4U 1820-30 system. Detailed numerical evolutionary calculations are performed utilizing Zapolsky-Salpeter (1969) models for cold stars, but allowing for the possibility that the secondary has not yet reached a completely degenerate configuration. The results are used to set significant constraints on the deviation from a completely degenerate configuration of the secondary, the systemic mass-loss parameters, and the mass of the neutron star in the 4U 1820-30 system.
120 citations
106 citations
104 citations
TL;DR: The hole lattice model for pure fluids and fluid mixtures of molecules differing in size and shape is presented in this article, where orientational effects are taken into account with the aid of the quasichemical approximation.
69 citations
TL;DR: The Treszczanowicz-Kehiaian model for binary mixtures of various liquids (component 1) with the n-alkane series (component 2) was used as a first approximation to the prediction of these quantities.
69 citations
TL;DR: In this paper, the authors measured liquid equilibrium relations (LLE) using double-walled glass cells and reported for four binary systems containing methanol (methanol - n-heptane, n-octane, N-nonane, and n-decane) in the 25 − 60 °C region.
57 citations
TL;DR: In this paper, phase equilibria in the binary system CaTiO 3 -SrTiO3 were studied above 1300°C and the volume change of the unit cell as a function of composition showed very little deviation from Vegard's law for solid solutions.
50 citations
TL;DR: The advantages of the Hoch-Arpshofen model are the effect of a binary system in a ternary which is included in the basic derivation of the model, and that no special interpolation formulas are needed.
Abstract: The Hoch-Arpshofen model is derived for ternary, quaternary and larger systems. The advantages of the model are the effect of a binary system in a ternary which is included in the basic derivation of the model, and that no special interpolation formulas are needed. Also, the maximum number of constants needed to describe a binary system is four: two for H m , the enthalpy of mixing, and two for S m ex , the excess entropy of mixing.
TL;DR: In this article, the CeFe binary system was investigated and an Fe-Ce binary phase diagram was proposed and the solid solubility of cerium in iron in the temperature range 850-900 °C was found to be less than 0.04 at.
Abstract: The CeFe binary system was investigated and an FeCe binary phase diagram was proposed. This system consists of 1. (i) two peritectic reactions, γ-Fe + L → Ce2Fe17 and Ce2Fe17 + L → CeFe2, occurring isothermally at 1063°C and 925°C respectively; 2. (ii) a eutectic reaction, L → CeFe2 + Ce, occurring isothermally at 592°C with eutectic containing 83.3 at.% Ce (92.6 wt.% Ce); 3. (iii) a peritectoid reaction, γ-Fe + Ce2Fe17 → α-Fe(Ce), occurring isothermally at 922 °C. The solid solubility of cerium in iron in the temperature range 850–900 °C was found to be less than 0.04 at.% (0.1 wt.%). The Curie temperature of α-Fe(Ce) was slightly lowered with increasing cerium content in solid solution.
TL;DR: In this article, the authors measured excess molar enthalpies H m E of (methanol + water) at pressures from 7 to 40 MPa at temperatures from 298 to 573 K. The results reported here were combined with available measured values of other thermodynamic quantities and represented with thermodynamically consistent empirical functions of temperature, pressure and composition.
TL;DR: Theoretical values of sound velocity, U, for the above mixtures are evaluated using Jacobson's relation, based on the free length theory, and that of Schaffs based on collision factor theory as discussed by the authors.
TL;DR: Viscosity and density of 27 binary mixtures of sec-, iso-, and tert-butanol with water were measured at 273 ǫ T/K/ǫ353 and the results summarized using polynomials as mentioned in this paper.
Abstract: Viscosity and density of 27 binary mixtures of sec-, iso-, and tert-butanol with water were measured at 273 ≤ T/K ≤ 353 and the results summarized using polynomials. At fixed T the density depended...
TL;DR: In this paper, a static equilibrium cell was used to measure the vapor-liquid equilibrium (VLE) data for the binary systems of benzene/toluene, diphenylmethane/toline, m-cresol/1,2,3,4-tetrahydronaphthalene, and benene/quinoline, which were correlated by using the Peng-Robinson equation of state to describe both vapor and liquid phases.
Abstract: Vapor-liquid equilibrium (VLE) data for the binary systems of benzene/toluene, diphenylmethane/toluene, m-cresol/1,2,3,4-tetrahydronaphthalene, and benzene/quinoline were measured at low to moderate pressures (0-1733 kPa) by using a static equilibrium cell. The data were isothermally correlated by using the Peng-Robinson equation of state to describe both vapor and liquid phases. The data were also correlated by using the Peng-Robinson equation of state to describe the vapor phase and the universal quasi-chemical (UNIQUAC) excess Gibbs free energy expression for the liquid phase.
TL;DR: In this article, a selfconsistent set of thermodynamic formation data for the silicon boridesr SiB3, SiB6 and SiB14 was calculated after review of the relevant literature regarding thermodynamic and phase equilibria data in the silicon-boron binary system.
Abstract: A self-consistent set of thermodynamic formation data for the silicon boridesr SiB3, SiB6 and SiB14 was calculated after review of the relevant literature regarding thermodynamic and phase equilibria data in the silicon-boron binary system. This was accomplished using the computer program BINGSS, which is a least squares fitting routine for binary systems developed by Lukas et al. (ref. 1).
TL;DR: In this article, the details of the mass transfer flow near the inner Lagrangian point in a semidetached binary system are numerically calculated using a polytropic equation of state with n = 3/2.
Abstract: The details of the mass transfer flow near the inner Lagrangian point in a semidetached binary system are numerically calculated. A polytropic equation of state with n = 3/2 is used. The dependence of the mass transfer rate on the degree to which the star overfills its Roche lobe is calculated, and good agreement with previous analytic estimates is found. The variation of mass transfer rate which occurs if the binary system has a small eccentricity is calculated and is used to cast doubt on the model for superhumps in dwarf novae proposed by Papaloizou and Pringle (1979).
TL;DR: In this paper, a new calorimetric study or the Cr-C system coupled with a phase diagram computation is presented and compared with former results and a new phase diagram is presented.
Abstract: A new calorimetric study or the Cr-C system, coupled with a phase diagram computation, will be presented and compared with former results.
TL;DR: In this article, a concentration profile is generated in a fluidized bed binary system during a time interval, and the resulting profile of the measured system was found to be very little affected by the initial arrangement.
TL;DR: The molar excess enthalpies HmE of binary solvent mixtures of N-methylacetamide with methanol, ethanol, 1-propanol, 2-Propanol and t-butanol have been measured with a flow microcalorimeter at 40°C as discussed by the authors.
Abstract: The molar excess enthalpies HmE of binary solvent mixtures of N-methylacetamide with methanol, ethanol, 1-propanol, 2-propanol, 1-butanol, and t-butanol have been measured with a flow microcalorimeter at 40°C. The excess enthalpies are negative for methanol and positive for the other alcohols over the whole composition range, except for t-butanol which exhibits a sigmoid curve with a deep minimum at low mole fractions of the amide. The values for the primary alcohols increase in the order methanol < ethanol < 1-propanol < 1-butanol. The partial molar excess enthalpies have also been evaluated. Intermolecular interactions in these mixtures are discussed through comparison of the results with those for the corresponding binary mixtures of N,N-dimethylacetamide.
TL;DR: In this article, the authors reported the solubilities and equilibrium data of the ternary mixture water + acetic acid + methyl ethyl ketone at 25, 35 and 45°C.
01 Dec 1987
TL;DR: In this article, a model-supported analysis of nine binary mixture systems AB is presented, where A = 2-pyrrolidinone, N-methyl-2-polycyclohexyl-2 pyrrolidsinone and B = water, methanol or ethanediol.
Abstract: Nine binary mixture systems AB are considered, where A = 2-pyrrolidinone, N-methyl-2-pyrrolidinone or N-cyclohexyl-2-pyrrolidinone and B = water, methanol or ethanediol. Their complex permittivity, as measured in the 20 MHz to 36 GHz range at 20°C, is interpreted by a model supported analysis. It applies in particular an empirical correlation between relaxation time and viscosity as established for the case of rigid molecules, relaxing by rotational tumbling. From this, constraints are obtained for those spectral components which are due to species of that category. The procedure yields, among others, for any system a spectral component which can be ascribed to heteroassociates of probably definite AB or AB2 composition. Again with any system, self association of B type molecules is observed, which is strongly affected by addition of A. Special relaxation features of some substances are also considered.
TL;DR: In this paper, the subcritical isothermal behavior for some of the isotherms near three-phase liquid liquid liquid vapor loci is interpreted as being analogous to that seen for supercritical extraction.
TL;DR: In this paper, the composition-temperature-pressure phase relations of binary alloy systems are discussed, including the effect of pressure on liquidi and eutectic points, the effect on solid solubility, polymorphism of intermetallic compounds, formation and dissociation of inter-metall compounds, the similarity of phase diagrams of related systems, and the coupling of compositiontemperature pressure phase diagrams with thermochemical data.
Abstract: The composition-temperature-pressure phase relations of binary alloy systems are discussed. Topics include the effect of pressure on liquidi and eutectic points, the effect of pressure on solid solubility, polymorphism of intermetallic compounds, the formation and dissociation of intermetallic compounds, the similarity of phase diagrams of related systems and the coupling of composition-temperature-pressure phase diagrams with thermochemical data. The systems HgTl, AlSi, AlGe, ZnAs and CdPb are presented as examples.
TL;DR: In this paper, phase diagrams for Cu-W, Au-W systems have been calculated based on available thermodynamic data, assuming that there is no mutual solid solubility in all the cases.
Abstract: Phase diagrams for Cu-W, Au-W systems have been calculated based on available thermodynamic data. It was assumed that there is no mutual solid solubility in all the cases. Liquid phase equilibria were calculated on the basis of sub-regular solution model using Miedema's interaction parameters. Vapour phase boundaries have also been determined.
TL;DR: In this paper, the mutual solubilities at the three-phase vapor-liquid-liquid equilibrium pressure were experimentally determined for the binary mixtures of water with m-cresol, quinoline, indoline, 1,2,3,4-tetrahydroquinoline (THQ), thianaphthene, or 9,10-dihydrophenanthrene at temperatures from 293 to 502 K.
Abstract: Mutual solubilities at the three-phase vapor-liquid-liquid equilibrium pressure were experimentally determined for the binary mixtures of water with m-cresol, quinoline, indoline, 1,2,3,4-tetrahydroquinoline (THQ), thianaphthene, or 9,10-dihydrophenanthrene at temperatures from 293 to 502 K. The equilibrium compositions of both liquid phases, temperature, and three-phase equilibrium pressure are reported.
TL;DR: In this article, an analytic solution for the behavior of the inner binary separation with time for a coplanar hierarchical triple system in which both the inner and outer orbit are (initially) circular is presented.
Abstract: This paper presents an analytic solution for the behavior of the inner binary separation with time for a coplanar hierarchical triple system in which both the inner and outer orbit are (initially) circular. This separation will be important if the inner binary is a mass transferring binary system, since in this case small changes in the inner binary separation are likely to result in significant changes in the mass-transfer rate and hence in the luminosity. The timing of the minima in the separation, when such luminosity bursts would occur, is shown to be strongly dependent on the inner binary mass ratio and might therefore serve as a diagnostic on the inner binary mass ratio in such systems. The advantages and drawbacks of the method are discussed.