ChemInform Abstract: Subsolidus Phase Equilibrium in the Cu-Sb-O System.

ChemInform ◽  
2010 ◽  
Vol 29 (37) ◽  
pp. no-no
Author(s):  
M. STAN ◽  
S. MIHAIU ◽  
D. CRISAN ◽  
M. ZAHARESCU
Keyword(s):  
Phase Equilibrium ◽  
Subsolidus Phase ◽  
Subsolidus Phase Equilibrium

Subsolidus solubility between : a hydrothermal investigation

1966 ◽  
Vol 35 (273) ◽  
pp. 742-755 ◽  
Author(s):  
R. S. Bradley ◽  
P. Engel ◽  
D. C. Munro
Keyword(s):  
Phase Equilibrium ◽  
Solid Solutions ◽  
Kinetic Properties ◽  
Subsolidus Phase ◽  
Temperature Range ◽  
Subsolidus Phase Equilibrium ◽  
Geological Factors ◽  
Preliminary Study ◽  
Experimental Findings

SummaryThe subsolidus phase equilibrium of the lithiophilite-tephroite system was studied in the temperature range 500 to 900° C. The solubility of tephroite in lithiophilite is limited and increases with temperature. The reaction is very sluggish and has peculiar kinetic properties. No reverse solubility was observed. Similar asymmetry was found in the LiMgPO4-forsterite system of which a preliminary study was made. Apparent absences of silicate phosphate olivine solid solutions in nature are related to our experimental findings and to geological factors.

scholarly journals Subsolidus phase equilibrium in the system Y2O3-BaO-CuO at 900.DEG.C in air.

1987 ◽  
Vol 34 (10) ◽  
pp. 580-582 ◽  
Author(s):  
Yasunori Ikeda ◽  
Mikio Takano ◽  
Yoshichika Bando ◽  
Hitoshi Kitaguchi ◽  
Jun Takada ◽  
...  
Keyword(s):  
Phase Equilibrium ◽  
Subsolidus Phase ◽  
Subsolidus Phase Equilibrium

Subsolidus phase equilibrium in Cs2MoO4-Al2(MoO4)3-Zr(MoO4)2 system and crystal structure of new ternary molybdate Cs(AlZr0.5)(MoO4)3

2010 ◽  
Vol 55 (2) ◽  
pp. 209-214 ◽  
Author(s):  
T. V. Namsaraeva ◽  
B. G. Bazarov ◽  
R. F. Klevtsova ◽  
L. A. Glinskaya ◽  
K. N. Fedorov ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Phase Equilibrium ◽  
Subsolidus Phase ◽  
Subsolidus Phase Equilibrium ◽  
Ternary Molybdate

Subsolidus phase equilibrium in the Cu-Sb-O system

1998 ◽  
Vol 35 (3) ◽  
pp. 243-254 ◽  
Author(s):  
M. Stan ◽  
S. Mihaiu ◽  
D. Crisan ◽  
M. Zaharescu
Keyword(s):  
Phase Equilibrium ◽  
Subsolidus Phase ◽  
Subsolidus Phase Equilibrium

Equilibrium phase diagram for the system PbO-CaO-CuO

1990 ◽  
Vol 5 (5) ◽  
pp. 929-931 ◽  
Author(s):  
Hitoshi Kitaguchi ◽  
Jun Takada ◽  
Kiichi Oda ◽  
Yoshinari Miura
Keyword(s):  
Eutectic Reaction ◽  
Equilibrium Phase ◽  
Eutectic Point ◽  
Equilibrium Phase Diagram ◽  
X Ray Diffraction ◽  
Subsolidus Phase ◽  
Essential Information ◽  
X Ray ◽  
Subsolidus Phase Equilibrium ◽  
System Phase

In order to obtain essential information on the formation process of the high-Tc phase in the Bi, Pb-Sr-Ca-Cu-O system, phase equilibria in the system PbO-CaO-CuO have been studied, mainly by x-ray diffraction analysis and thermal analysis. Temperature versus composition diagrams were established for the systems PbO-CuO(Cu2O) and PbO(PbO2)–CaO in air. Three invariant points were detected in these systems: a eutectic reaction (PbO + Ca2PbO4 = L) at 847 ± 6°C, a peritectic reaction (Ca2PbO4 = L + CaO) at 980 ± 2°C, and a eutectic reaction (PbO + CuO = L) at 789 ± 3°C. For the system PbO(PbO2)-CaO-CuO, subsolidus phase equilibrium in air was established. The liquidus was also examined at 780, 800, and 820°C, and a ternary (PbO-Ca2PbO4-CuO) eutectic point was detected at 772 ± 6°C.

Synthesis, crystal structure, and thermal stability of new borates Na3REB2O6 (RE = Pr, Sm, Eu)

2016 ◽  
Vol 31 (2) ◽  
pp. 110-117 ◽  
Author(s):  
Zhixun Wang ◽  
Hangkong Li ◽  
Gemei Cai ◽  
Zhanpeng Jin
Keyword(s):  
Diffraction Method ◽  
Structure Type ◽  
Monoclinic Space Group ◽  
X Ray Diffraction ◽  
Experimental Conditions ◽  
Subsolidus Phase ◽  
Thermal Stabilities ◽  
Subsolidus Phase Equilibrium ◽  
Three Phase ◽  
First Time

Subsolidus phase equilibrium of Na2O–Sm2O3–B2O3 system has been investigated mainly by solid-state reaction and powder X-ray diffraction method. There are nine definite three-phase regions and three ternary compounds determined under present experimental conditions. A novel compound Na3SmB2O6 was found and confirmed in this system, along with its two homogeneous compounds Na3REB2O6 (RE = Pr, Eu) synthesized for the first time. The indexing results showed that all three compounds crystallize in the monoclinic space group P21/c (No.14) with the same structure type as both Na3NdB2O6 and Na3GdB2O6. The lattice parameters (a, b, and c) of new borates Na3REB2O6 (RE = Pr, Sm, Eu) decrease linearly with a decreasing radius of RE ion, which obeys the Lanthanide-contraction rule. The existence of a trigonal BO3 group in the Na3REB2O6 (RE = Pr, Sm) compounds was confirmed by analysis of their infrared absorption spectra. Thermal stabilities of the three new borates have been investigated.

Equilibrium phase diagrams for the systems PbO–SrO–CuO and PbO–CaO–SrO

1990 ◽  
Vol 5 (7) ◽  
pp. 1397-1402 ◽  
Author(s):  
Hitoshi Kitaguchi ◽  
Jun Takada ◽  
Kiichi Oda ◽  
Yoshinari Miura
Keyword(s):  
Solid Solution ◽  
Equilibrium Phase ◽  
Xrd Analysis ◽  
Hexagonal Structure ◽  
Lattice Parameters ◽  
Subsolidus Phase ◽  
Essential Information ◽  
Solubility Range ◽  
Subsolidus Phase Equilibrium ◽  
Typical Composition

In order to obtain essential information on the formation process of the high-Tc phase in the Bi, Pb–Sr–Ca–Cu–O system, subsolidus phase equilibrium in the systems PbO(PbO2)–SrO–CuO and PbO(PbO2)–CaO–SrO has been studied, mainly by XRD analysis. A pseudoternary Pb–Sr–Cu–O solid solution was newly found. This solid solution has a wide solubility range including its typical composition Pb2.03Sr3Cu0.73O7.70. It has a hexagonal structure with lattice parameters a = 10.11 and c = 7.11 in AU. Composition dependences of the lattice parameters and the decomposition (incongruent melting) temperature of (Ca1−xSrx)2PbO4 solid solution are also reported.

Convergent-bceam diffraction studies on lead zirconate titanate Ceramics

1986 ◽  
Vol 44 ◽  
pp. 482-483
Author(s):  
M.L.A. Dass ◽  
T.A. Bielicki ◽  
G. Thomas ◽  
T. Yamamoto ◽  
K. Okazaki
Keyword(s):  
Lead Zirconate Titanate ◽  
Direct Proof ◽  
Lead Zirconate ◽  
Subsolidus Phase ◽  
Pzt Ceramics ◽  
Subsolidus Phase Diagram ◽  
Zirconate Titanate ◽  
Two Phases ◽  
Cbd Method ◽  
Titanate Ceramics

Lead zirconate titanate, Pb(Zr,Ti)O3 (PZT), ceramics are ferroelectrics formed as solid solutions between ferroelectric PbTiO3 and ant iferroelectric PbZrO3. The subsolidus phase diagram is shown in figure 1. PZT transforms between the Ti-rich tetragonal (T) and the Zr-rich rhombohedral (R) phases at a composition which is nearly independent of temperature. This phenomenon is called morphotropism, and the boundary between the two phases is known as the morphotropic phase boundary (MPB). The excellent piezoelectric and dielectric properties occurring at this composition are believed to.be due to the coexistence of T and R phases, which results in easy poling (i.e. orientation of individual grain polarizations in the direction of an applied electric field). However, there is little direct proof of the coexistence of the two phases at the MPB, possibly because of the difficulty of distinguishing between them. In this investigation a CBD method was found which would successfully differentiate between the phases, and this was applied to confirm the coexistence of the two phases.

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