Solidification Paths within the Ceramic Systems

The aim of this work is to assemble the computer models of phase diagrams (PD) for the typical ternary systems and to examine the processes of crystallization on its base. Spatial schemes of mono-and invariant equilibria have been used for it. Analysis of concentration fields, obtained by the projection of the surfaces on the Gibbs triangle, allows establish the boundaries of phase regions (located above the considered fields), the sequence of phase transformations and microstructural elements for the solidification of the initial melt at equilibrium condition. Concentration fields have been analyzed by means of mass balances for their centers of masses. Based on this technology, the research identifies concentration fields with coinciding sets of phase reactions and microconstituents, and the fields with individual characteristics.

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Reference Book on the Oxide Systems Space Diagrams as a Tool for Data Mining

Solid State Phenomena ◽

10.4028/www.scientific.net/ssp.230.51 ◽

2015 ◽

Vol 230 ◽

pp. 51-54 ◽

Cited By ~ 1

Author(s):

V.I. Lutsyk ◽

V.P. Vorob'eva ◽

Anna Zelenaya

Keyword(s):

Data Mining ◽

Phase Diagram ◽

Phase Diagrams ◽

Computer Model ◽

Computer Models ◽

Ternary Oxide ◽

Reference Book ◽

Mass Balances ◽

Oxide Systems

The Reference Book of Ternary Oxide Systems phase diagrams computer models is presented. Its computer models of T-x-y diagrams give a possibility to calculate the mass balances at any temperature, to observe crystallization history and the process of microstructure forming at different crystallization stages. The investigation of concentration fields with the different phase constituents on the T-x-y diagram projection by means of its computer model is considered. Phase diagram of CaO-SiO2-Al2O3system is used as an example.

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Calculation of phase diagrams and thermodynamic properties of 14 additive and reciprocal ternary systems containing Li2CO3, Na2CO3, K2CO3, Li2SO4, Na2SO4, K2SO4, LiOH, NaOH, and KOH

Canadian Journal of Chemistry ◽

10.1139/v84-078 ◽

1984 ◽

Vol 62 (3) ◽

pp. 457-474 ◽

Cited By ~ 19

Author(s):

A. D. Pelton ◽

C. W. Bale ◽

P. L. Lin

Keyword(s):

Phase Diagram ◽

Thermodynamic Properties ◽

Molten Salt ◽

Phase Diagrams ◽

Binary Systems ◽

Ternary Phase ◽

Ternary Phase Diagram ◽

Ternary Systems ◽

Maximum Error ◽

Critical Assessment

Phase diagrams and thermodynamic properties of five additive molten salt ternary systems and nine reciprocal molten salt ternary systems containing the ions Li+, Na+, [Formula: see text], OH− are calculated from the thermodynamic properties of their binary subsystems which were obtained previously by a critical assessment of the thermodynamic data and the phase diagrams in these binary systems. Thermodynamic properties of ternary liquid phases are estimated from the binary properties by means of the Conformal Ionic Solution Theory. The ternary phase diagrams are then calculated from these thermodynamic properties by means of computer programs designed for the purpose. It is found that a ternary phase diagram can generally be calculated in this way with a maximum error about twice that of the maximum error in the binary phase diagrams upon which the calculations are based. If, in addition, some reliable ternary phase diagram measurements are available, these can be used to obtain small ternary correction terms. In this way, ternary phase diagram measurements can be smoothed and the isotherms drawn in a thermodynamically correct way. The thermodynamic approach permits experimental data to be critically assessed in the light of thermodynamic principles and accepted solution models. A critical assessment of error limits on all the calculated ternary diagrams is made, and suggestions as to which composition regions merit further experimental study are given.

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Phase diagrams of the ternary systems Mn, Fe, Co, NiSiN

Journal of Solid State Chemistry ◽

10.1016/0022-4596(87)90054-5 ◽

1987 ◽

Vol 70 (2) ◽

pp. 178-184 ◽

Cited By ~ 39

Author(s):

F. Weitzer ◽

J.C. Schuster

Keyword(s):

Phase Diagrams ◽

Ternary Systems

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The multivariate calculation of material balances of flowsheets for separating ternary mixtures of different physical-chemical nature

Тонкие химические технологии ◽

10.32362/2410-6593-2016-11-3-47-57 ◽

2016 ◽

Vol 11 (3) ◽

pp. 47-57 ◽

Cited By ~ 3

Author(s):

A. V. Frolkova ◽

M. A. Ablizin ◽

M. A. Mayevskiy ◽

A. K. Frolkova

Keyword(s):

Phase Diagrams ◽

Chemical Nature ◽

Material Balance ◽

Ternary Systems ◽

Butyl Alcohol ◽

Ternary Mixtures ◽

Two Phase ◽

Physical Chemical ◽

Alcohol Water

An approach to the determination of free variables required for calculating the material balance of the flowsheet of ternary mixtures separation is presented. Phase diagrams of the considered ternary systems are characterized by the presence of a two-phase splitting area and by the presence of different amounts of azeotropes (classes 3.1.0, 3.1.1, 3.2.1 and 3.3.1). For all the systems flowsheets containing three rectification columns and a florentine vessel for separation were suggested. The multivariance of the solution of the balance problem was shown. The approach was illustrated by the example of real ternary systems characterized by different phase diagrams (methanol - chloroform - water, butyl alcohol - water - toluene, nitromethane - hexane - water). The parameters of the rectification columns were presented.

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