ChemInform Abstract: Construction of the Quasi-Ternary Phase Diagram in the NdO1.5-BaO-CuOx System in an Air Atmosphere. Part 1. Equilibrium Tie Lines in the Nd1+xBa2-xCu3O6+δ (Nd 123) Solid Solution and Liquid Region.

ChemInform ◽  
2010 ◽  
Vol 29 (44) ◽  
pp. no-no
Author(s):  
M. KAMBARA ◽  
T. UMEDA ◽  
M. TAGAMI ◽  
X. YAO ◽  
E. A. GOODILIN ◽  
...  
1998 ◽  
Vol 13 (1) ◽  
pp. 118-125 ◽  
Author(s):  
Minoru Tagami ◽  
Makoto Kambara ◽  
Takateru Umeda ◽  
Yuh Shiohara

This paper presents tie-lines between Pr1+xBa2−xCu3O7−δ and liquid on a PrOy –BaO–CuO ternary phase diagram at 965, 970, 975, 980, and 990 °C in air atmosphere, for which knowledge is necessary to fabricate composition controlled Pr1+xBa2−xCu3O7−δ single crystals by the solution growth method. Liquidus faces have been investigated by dipping MgO single crystal rods into the thermal equilibrium melt at various temperatures and analyzing the composition of the adhering melt by ICP. The compositions of Pr1+xBa2−xCu3O7−δ solid solution coexisting with various compositions of liquids were obtained by quantitative EPMA analysis of quenched melts. Tie-lines were calculated by applying the lever rule to these experimental data for solid compositions and liquidus faces. Furthermore, the relationships between solid solubilities and peritectic temperatures of Pr1+xBa2−xCu3O7−δ are reported.


2019 ◽  
Vol 44 (3) ◽  
pp. 43-49
Author(s):  
Aline Amaral Madeira

This article was elaborated in an approach to the liquid-liquid equilibrium of the extraction process of ethanoic acid (C2H4O2) in aqueous phase using ethyl ethanoate as solvent. The liquid-liquid extraction was modeled by the construction of a ternary phase diagram for the water-ethanoic acid- ethyl ethanoate system with the aid of the Origin software. The equilibrium data were obtained experimentally by titration at room temperature (298.15 K) and atmospheric pressure (101325 Pa) using four mixtures of water, ethanoic acid, and ethyl ethanoate. The determination of the composition of the extract and residue portions in the equilibrium of each mixture by of the tie-lines method allowed to examine the percentages of liquid-liquid extraction achieved. The distribution coefficients and separation factors calculated made it possible an evaluation of the distribution and of the mutual solubility of the solute in the aqueous and organic phases. The results showed a good performance of ethyl ethanoate in the extraction of ethanoic acid for concentrations of solute until 16% of the feed.


Ionics ◽  
1997 ◽  
Vol 3 (1-2) ◽  
pp. 149-154 ◽  
Author(s):  
M. Jean ◽  
S. Peulon ◽  
J. -F. Guillemoles ◽  
J. Vedel

Materials ◽  
2020 ◽  
Vol 13 (2) ◽  
pp. 450
Author(s):  
Yandong Li ◽  
Tongsheng Zhang ◽  
Yefeng Feng ◽  
Chengjun Liu ◽  
Maofa Jiang

The Al2O3-SiO2, La2O3-Al2O3, and La2O3-SiO2 binary phase diagrams were estimated by Redlich–Kister expression. La4.67Si3O13 (=La4.67(SiO4)3O) was introduced to improve the existing phase diagrams. The Al2O3-SiO2-La2O3 ternary phase diagram extrapolated by Kohler method was optimized. Then, the liquidus of Al2O3-SiO2-La2O3 system at 1600 °C was compared with Al2O3-SiO2-RE2O3 (RE = Rare Earth Elements) systems and experimental results in other literature. The high temperature experiments were conducted in the tube furnace at 1500 °C. Then the field emission scanning electron microscope (FE-SEM), energy dispersive spectrometer (EDS), and X-ray diffraction (XRD) were employed to verify the calculated liquid region and precipitates phase at 1500 °C. Moreover, the liquidus of binary systems were compared with FactSage results and experiments. The optimized ternary phase diagram shows the relatively reliable region of liquid phase, and it is significant to the seal glass of solid oxide fuel cells and other fields being related to RE containing silicates.


1996 ◽  
Vol 11 (2) ◽  
pp. 80-84
Author(s):  
S. Wies ◽  
W. Eysel

The ternary phase diagram of the system Bi2O3-CdO-GeO2 was investigated in several isothermal sections using predominantly X-ray powder diffraction. The following phases are described with respect to their crystal chemistry, phase relations and powder patterns: Bi2−2xCd2x(O3−x⍽9+x) (solid solution with anti-α-AgI structure), CdGeO3 (complicated polymorphism), Bi12GeO20 (stoichiometric sillenite), Cd-sillenite (solid solution), Bi1.8Cd0.2GeO4.9 (metastable, new phase, new structure type with GeO5 polyhedra), Bi2CdGeO6 (new ternary oxide, new structure type).


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