The ternary system BaO-ZnO-SiO2

1970 ◽  
Vol 23 (6) ◽  
pp. 1077 ◽  
Author(s):  
ER Segnit ◽  
AE Holland
Keyword(s):  
Melting Point ◽  
Ternary System ◽  
Ternary Compounds ◽  
Molar Ratios ◽  
Invariant Points ◽  
Equilibrium Relationships

The equilibrium relationships in the greater part of the ternary system BaO-ZnO-SiO2 have been determined. Fifteen ternary invariant points have been located; six of these are eutectics, and the minimum melting point in the system is 1100� at a composition of 41.7% BaO, 17.00/0 ZnO, 41.3% SiO2 by weight. Five ternary compounds with molar ratios of BaO : ZnO : SiO2 of 1 : 1 : 1, 1 : 1 : 3, 1 : 2 : 2, 2 : 1 : 2, and 2 : 3 : 3 are described.

The ternary system Na2O-ZnO-SiO2

1966 ◽  
Vol 19 (6) ◽  
pp. 905 ◽  
Author(s):  
AE Holland ◽  
ER Segnit
Keyword(s):  
Melting Point ◽  
Ternary System ◽  
Incongruent Melting ◽  
Melting Points ◽  
Ternary Compounds ◽  
Molar Ratios ◽  
Invariant Points ◽  
Equilibrium Relationships

The equilibrium relationships in a large part of the system Na2O-ZnO-SiO2 have been determined. Of the eleven invariant points located, four are eutectics, the minimum melting point in the system being 680� at a composition of 21.5% Na2O, 12.0% ZnO, 66.5% SiO2 by weight. Four ternary compounds with molar ratios of Na2O : ZnO : SiO2 of 1 : 1 : 1, 1 : 1 : 2, 1 : 2 : 2, 2 : 2 : 3, all with incongruent melting points, are described.

The ZnO-rich area of the ternary system ZnO-TiO2-SiO2

1975 ◽  
Vol 28 (11) ◽  
pp. 2373 ◽  
Author(s):  
AE Holland ◽  
ER Segnit
Keyword(s):  
Melting Point ◽  
Ternary System ◽  
High Temperatures ◽  
Liquid Immiscibility ◽  
Large Area ◽  
Ternary Compounds ◽  
Invariant Points ◽  
Equilibrium Relationships

Equilibrium relationships in the zinc-rich corner of the ternary system ZnO-TiO2-SiO2 have been studied. No ternary compounds were found. Three invariant points were located, all eutectics. The minimum melting point in the system was 1315(�5)�C. A large area of liquid immiscibility at high temperatures is postulated.

Untersuchungen zum ternären System Bi/Te/O, III. Bestimmung thermodynamischer Daten der ternären Verbindungen/Investigations on the Ternary System Bi/Te/O,III. Determination of Thermodynamic Data of Ternary Compounds

1999 ◽  
Vol 54 (2) ◽  
pp. 252-260 ◽  
Author(s):  
P. Schmidt ◽  
C. Hennig ◽  
H. Oppermann
Keyword(s):  
Solid State ◽  
Ternary System ◽  
Thermodynamic Data ◽  
Phase Relations ◽  
Solid State Reactions ◽  
Enthalpies Of Formation ◽  
Ternary Compounds ◽  
Heats Of Solution

The phase relations in the ternary system Bi/Te/O have been determined in previous studies by solid state reactions. Thermodynamical data have now been obtained for the pertinent equilibria. The heats of solution of Bi2O3, Bi12TeO20, Bi10Te2O19, Bi16Te5O34, Bi2TeO5, Bi2Te2O7, Bi2Te4O11 and TeCl4 were determined in 4N HCl. From these the enthalpies of formation of bismuth tellurites at 298 K have been derived:⊿H°b (Bi12TeO20, f, 298) = -901,6 ± 8 kcal/mol,⊿H°b (Bi10Te2O19, f, 298) = -856,1 ± 9 kcal/mol,⊿H°b (Bi16Te5O34, f, 298) = -1519,5 ± 17 kcal/mol,⊿H°b (Bi2TeO5, f, 298)= -222,8 ± 3 kcal/mol,⊿H°b (Bi2Te2O7, f, 298)= -299,4 ± 4 kcal/mol,⊿H°b (Bi2Te4O11, f, 298)= -448,2 ± 7 kcal/mol.

The Crystal Structures of the Cubic and Tetragonal Phases of Y1Ba3Cu2O6.5 + δand Y1Ba4Cu2O7.5 + δ

1988 ◽  
Vol 32 ◽  
pp. 497-505
Author(s):  
M. A. Rodriguez ◽  
J. J. Simmins ◽  
P. H. McCluskey ◽  
R. S. Zhou ◽  
R. L. Snyder
Keyword(s):  
Ternary System ◽  
Crystal Structures ◽  
Perovskite Structure ◽  
World Wide ◽  
Space Group ◽  
Ternary Compounds ◽  
Superconducting Material ◽  
Complete Study

The discovery of the superconducting material Y1Ba2Cu3O6+δ( “123” material) resulted in a world wide interest in the pseudo-ternary system BaO·YO·CuO. A complete study of the phases present in this system was initiated to develop a better understanding and processing of the superconducting 123 material. The crystal structures were established for two of the three ternary compounds in this system immediately after the discovery of superconductivity. One such phase was a green insulating compound Y2Ba1Cu1O5(”211”) which has the space group. The superconducting 123 compound was found to have the space group Pmmm and an ordered triple-celled perovskite structure.

102. Melting point equations for the ternary system water/sodium chloride/ethylene glycol revisited

Cryobiology ◽  
2008 ◽  
Vol 57 (3) ◽  
pp. 336 ◽  
Author(s):  
Erik J. Woods ◽  
Aniruddha Bagchi ◽  
James D. Benson ◽  
Xu Han ◽  
John K. Critser
Keyword(s):  
Sodium Chloride ◽  
Melting Point ◽  
Ternary System ◽  
Ethylene Glycol ◽  
System Water

scholarly journals Er-Cr-Ge Ternary System

2019 ◽  
Vol 20 (4) ◽  
pp. 376-383
Author(s):  
M. Konyk ◽  
L. Romaka ◽  
Yu. Stadnyk ◽  
V.V. Romaka ◽  
R. Serkiz ◽  
...  
Keyword(s):  
Phase Diagram ◽  
Isothermal Section ◽  
Ternary System ◽  
Electron Microprobe ◽  
Homogeneity Region ◽  
Space Group ◽  
X Ray ◽  
Type Space ◽  
Ternary Compounds ◽  
Pearson Symbol

The isothermal section of the phase diagram of the Er–Cr–Ge ternary system was constructed at 1070 K over the whole concentration range using X-ray diffractometry, metallography and electron microprobe (EPM) analysis. The interaction between the elements in the Er−Cr−Ge system results in the formation of two ternary compounds: ErCr6Ge6 (MgFe6Ge6-type, space group P6/mmm, Pearson symbol hP13; a = 5.15149(3), c = 8.26250(7) Ǻ; RBragg = 0.0493, RF = 0.0574) and ErCr1-хGe2 (CeNiSi2-type, space group Cmcm, Pearson symbol oS16, a = 4.10271(5), b = 15.66525(17), c = 3.99017(4) Ǻ; RBragg = 0.0473, RF = 0.0433) at investigated temperature. For the ErCr1-xGe2 compound, the homogeneity region was determined (ErCr0.28-0.38Ge2; a = 4.10271(5)-4.1418(9), b = 15.6652(1)-15.7581(4), c = 3.99017(4)-3.9291(1) Ǻ).

scholarly journals Isothermal section of the Ni-Mn-Sb ternary system at 773K

2019 ◽  
Vol 55 (2) ◽  
pp. 147-156 ◽  
Author(s):  
W.-Q. Ao ◽  
H.-Z. Yu ◽  
F.-L. Liu ◽  
F.-S. Liu ◽  
J.-Q. Li ◽  
...  
Keyword(s):  
Isothermal Section ◽  
Ternary System ◽  
Binary Systems ◽  
Type Structure ◽  
X Ray Diffraction ◽  
Energy Dispersion Spectroscopy ◽  
Heusler Compound ◽  
Space Group ◽  
Ternary Compounds ◽  
Binary Compounds

The isothermal section of the Ni-Mn-Sb ternary system at 773 K was measured by means of 117 alloys which were analyzed by using X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersion spectroscopy (EDS), and electron probe microanalysis (EPMA) techniques. The existence of 7 binary compounds, namely NiMn, Mn2Sb, MnSb, NiSb2, NiSb, Ni5Sb2, Ni3Sb and 2 ternary compounds, namely Ni2MnSb and NiMnSb were confirmed for this isothermal section. The four binary compounds Ni3Sb (Cu3Ti structure, Pmmn space group), Ni5Sb2 (Ni5Sb2-type structure, C2 space group), NiSb2 (FeS2-type structure, Pnnm space group) and Mn2Sb (Cu2Sb-type structure, P4/nmm space group) in the binary systems Ni-Sb and Mn-Sb were stoichiometric compounds, the homogeneity ranges of which were negligible. However the five single phases in the Ni-Mn system and the two binary compounds MnSb and NiSb showed more or less homogeneity ranges formed by substitution of Mn and Sb for Ni atom. The Heusler compound ? (Ni2MnSb) has L21-type ordered structure with space group Fm-3m, a = 0.6017 nm. And the crystal structure for the Half-Heusler compound ? (NiMnSb) is C1b-type (F-43m) with a = 0.5961 nm. The approximate homogeneity ranges of the two ternary compounds ? and ? at 773 K were investigated.

scholarly journals Experimental Investigation of the Phase Equilibria in the Al-Mn-Zn System at 400°C

2014 ◽  
Vol 2014 ◽  
pp. 1-13 ◽  
Author(s):  
Tian Wang ◽  
Dmytro Kevorkov ◽  
Ahmad Mostafa ◽  
Mamoun Medraj
Keyword(s):  
Solid Solution ◽  
Ternary System ◽  
Terminal Solid Solution ◽  
Stoichiometric Compound ◽  
Diffusion Couples ◽  
Ternary Compounds ◽  
Ternary Solubility ◽  
Limited Solid Solubility ◽  
Binary Compounds ◽  
Phase Relationships

Al-Mn-Zn ternary system is experimentally investigated at 400°C using diffusion couples and key alloys. Phase relationships and homogeneity ranges are determined for binary and ternary compounds using EPMA, SEM/EDS, and XRD. Reported ternary compound T3 (Al11Mn3Zn2) is confirmed in this study and is denoted as τ2 in this paper. Two new ternary compounds (τ1 and τ3) are observed in this system at 400°C. τ1 is determined as a stoichiometric compound with the composition of Al31Mn8Zn11. τ3 has been found to have homogeneity range of AlxMnyZnz (x=9–13 at%; y=11–15 at%; z=75–77 at%). The binary compounds Al4Mn and Al11Mn4 exhibit limited solid solubility of around 6 at% and 4 at% Zn, respectively. Terminal solid solution Al8Mn5 is found to have maximum ternary solubility of about 10 at% Zn. In addition, ternary solubility of Al-rich β-Mn′ at 400°C is determined as 4 at% Zn. Zn-rich β-Mn′′ has a ternary solubility of 3 at% Al. The solubility of Al in Mn5Zn21 is measured as 5 at%. Based on the current experimental results, the isothermal section of Al-Mn-Zn ternary system at 400°C has been constructed.

scholarly journals MODELING OF THERMOCHEMICAL PROPERTIES AND GLASSFORMING TENDENCY OF THE MELTS OF TERNARY Mn–Al–Gd SYSTEM

2018 ◽  
pp. 46-50
Author(s):  
N. Kotova ◽  
N. Golovata ◽  
N. Usenko
Keyword(s):  
Ternary System ◽  
Binary Systems ◽  
Hard Spheres ◽  
Regular Solution Model ◽  
Ternary Systems ◽  
Ternary Alloys ◽  
Liquid Alloys ◽  
Thermochemical Properties ◽  
Ternary Compounds ◽  
Enthalpies Of Mixing

In the present work, the enthalpies of mixing of liquid alloys of the ternary Mn-Al-Gd system have been calculated using the regular solution model by the Redlich-Kister-Muggianu formula. Also a comparison was made of calculated values of enthalpies of mixing in this system with the experimentally determined thermochemical properties of liquid alloys of the Mn-In-Gd ternary system obtained previously. In general, we estimate that the values of the enthalpies of mixing in the Mn-Al-Gd ternary system should be more exothermic than in the Mn–In-Gd one. This fact can be explained taking into consideration the main features of the component interaction in the boundary binary systems, namely, such important characteristics as electronegativity of the components, their electron work functions and a large difference in size of atoms. It can be concluded that it is the binary Mn–Al system that makes a significant contribution to the formation energy of ternary alloys. An imaginary line drawn through the points of maximum curvature of the isoenthalpic lines is considerably shifted towards the binary Mn–Al boundary, thus expanding significantly the region of rather exothermic enthalpies of mixing in the corresponding ternary system. For the two indicated ternary systems the size mismatch entropy has been calculated within the framework of hard spheres model and the Sσ/kB parameter has been determined. On the basis of the comprehensive analysis carried out, the criteria for the probability of occurrence of regions of easy amorphization in these ternary systems are proposed. The determination of the topology of the mixing enthalpy surface and the Sσ/kB parameter for the melts of studied ternary systems together with the data on binary and ternary compounds existing in these systems allowed to reasonably assume the concentration regions where the investigated ternary alloys have tendency for easy amorphization while rapid cooling of the melt. The simultaneous realization of the following three conditions was taken as a criterion for the possible existence of a region of easy amorphization: the absolute value of the enthalpies of mixing is at least 6 kJ/mol, the Sσ/kB parameter is not less than 0.3–0.4 and a certain distance from the concentration region corresponding to the exact composition of binary or ternary compounds.

Surface tension and density of the molten PbCl2–KCl–NaCl ternary system

1985 ◽  
Vol 63 (5) ◽  
pp. 1132-1138 ◽  
Author(s):  
T. Fujisawa ◽  
T. Utigard ◽  
J. M. Toguri
Keyword(s):  
Surface Tension ◽  
Ternary System ◽  
Surface Tensions ◽  
Maximum Bubble Pressure ◽  
Maximum Bubble Pressure Method ◽  
Temperature Range ◽  
Molar Ratios ◽  
Pressure Method ◽  
Bubble Pressure ◽  
Increasing Temperature

The maximum bubble pressure method was used to determine the surface tension and density of melts within the PbCl2–KCl–NaCl system. The temperature range of this study was from 450 to 800 °C. In all cases, the surface tension was found to decrease with increasing temperature. At constant molar ratios of KCl to NaCl, a minimum in the surface tension was observed at approximately 40 mol% PbCl2. The ternary surface tension values were found to obey the simple additivity expression of the binary surface tensions of PbCl2–KCl and PbCl2–NaCl. Based on these findings, constant surface tension contours have been drawn.The density obtained in the present study agree well with the previously determined densities using a bottom-balance Archimedean technique reported by this laboratory.

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