scholarly journals Thermodynamic assessment of the Mg-Pb and Mg-Bi systems using substitutional solution and associate models for the liquid phase

2014 ◽  
Vol 50 (2) ◽  
pp. 115-126 ◽  
Author(s):  
F. Zhang ◽  
Y. Tang ◽  
B. Hu ◽  
S. Liu ◽  
Y. Du ◽  
...  
Keyword(s):  
Experimental Data ◽  
Liquid Phase ◽  
Short Range ◽  
Short Range Order ◽  
Thermodynamic Assessment ◽  
Calphad Approach ◽  
Associate Model ◽  
Substitutional Solution Model ◽  
Self Consistent ◽  
Equilibrium Data

By means of CALPHAD approach, thermodynamic assessments of the Mg-Pb and Mg-Bi systems were carried out based on the available experimental data including thermodynamic properties and phase equilibrium data. The liquid phase was described with both the substitutional solution model and the associate model, and two sets of self-consistent thermodynamic parameters for the Mg-Pb and Mg-Bi systems were obtained, respectively. It was found that the associate model can account for the experimental data more satisfactorily than the substitutional solution one, especially for the liquid phase with the short-range order behavior.

Thermodynamic Assessment of SiO2-ZrO2 Binary System

2014 ◽  
Vol 628 ◽  
pp. 73-78 ◽  
Author(s):  
Hong Mei Chen ◽  
Jian Mei Chen ◽  
Song Wang ◽  
Wu Tao Li ◽  
Fan Gui Meng ◽  
...  
Keyword(s):  
Phase Diagram ◽  
Binary System ◽  
Thermodynamic Assessment ◽  
Phase Diagram Data ◽  
Solution Model ◽  
Calphad Approach ◽  
Experimental Phase ◽  
Experimental Phase Diagram ◽  
Substitutional Solution Model ◽  
Self Consistent

The SiO2-ZrO2binary system has been thermodynamically assessed with CALPHAD approach. The substitutional solution model is adopted for liquid. A set of self-consistent parameters capable of reproducing the corresponding experimental phase diagram data and liquidus immiscibility data has been obtained.

Thermodynamic Assessment of B2O3-SiO2 Binary System

2014 ◽  
Vol 628 ◽  
pp. 68-72
Author(s):  
Hong Mei Chen ◽  
Jian Mei Chen ◽  
Song Wang ◽  
Wu Tao Li ◽  
Fan Gui Meng ◽  
...  
Keyword(s):  
Phase Diagram ◽  
Binary System ◽  
Thermodynamic Assessment ◽  
Phase Diagram Data ◽  
Solution Model ◽  
Calphad Approach ◽  
Experimental Phase ◽  
Experimental Phase Diagram ◽  
Substitutional Solution Model ◽  
Self Consistent

The B2O3-SiO2binary system has been thermodynamically reassessed with CALPHAD approach. The substitutional solution model is adopted for liquid. A set of self-consistent parameters capable of reproducing the corresponding experimental phase diagram data and subliquidus immiscibility data has been obtained.

Thermodynamic assessment of the MgO–Al2O3–SiO2 system

2005 ◽  
Vol 20 (4) ◽  
pp. 975-986 ◽  
Author(s):  
Huahai Mao ◽  
Olga Fabrichnaya ◽  
Malin Selleby ◽  
Bo Sundman
Keyword(s):  
Experimental Data ◽  
New Species ◽  
Liquid Phase ◽  
Thermodynamic Assessment ◽  
Liquidus Surface ◽  
Sublattice Model ◽  
Ternary Compounds ◽  
Self Consistent ◽  
A New Species ◽  
Consistent Thermodynamic Data

Thermodynamic properties of the phases in the MgO–Al2O3–SiO2 system were assessed, resulting in a set of self-consistent thermodynamic data. The two ternary compounds, cordierite and sapphirine, were optimized from subsolidus reactions. The liquid phase was described by the ionic two-sublattice model with a new species AlO2−1, yielding the formula (Al+3,Mg+2)P(AlO2−1,O−2,SiO4−4,SiO20)Q. Projection of the liquidus surface was calculated. Various isothermal and isoplethal sections were compared with the experimental data.

scholarly journals Sn-Ni-Bi liquid phase thermodynamic properties

2011 ◽  
Vol 9 (1) ◽  
pp. 149-156 ◽  
Author(s):  
Nikolina Milcheva ◽  
Jolanta Romanowska ◽  
Gueorgui Vassilev
Keyword(s):  
Experimental Data ◽  
Liquid Phase ◽  
Thermodynamic Properties ◽  
Binary Systems ◽  
Isopiestic Method ◽  
Miscibility Gap ◽  
Calphad Approach ◽  
Activity Data ◽  
General Solution Model ◽  
Good Agreement

AbstractExperimental data of bismuth activity coefficients at 1773 K were obtained by isopiestic method and compared to calculated values. Thermodynamic properties of the Sn-Ni-Bi liquid phase were estimated by means of the general solution model and by the methods of Kohler. Description of the ternary liquid phase (Gibbs excess energy dependence on the temperature and the composition) was achieved by using available thermodynamic data of the constitutive binary systems (Ni-Bi, Sn-Bi, Sn-Ni). A comparison between calculated quantities and experimental data wasconducted. The present assessment with thermodynamically optimized values of the system Sn-Ni-Bi (obtained by the CALPHAD approach) was in good agreement. The suggested appearance of a liquid phase miscibility gap at high temperatures is in agreement with the experimental bismuth activity data and with the assessed thermochemical functions.

ENERGETIC EFFECT IN LIQUID ANTIMONY-INDIUM ALLOYS

1995 ◽  
Vol 09 (26n27) ◽  
pp. 1729-1738 ◽  
Author(s):  
R.N. SINGH ◽  
K.K. SINGH
Keyword(s):  
Liquid Phase ◽  
Order Parameter ◽  
Short Range ◽  
Short Range Order ◽  
Atomic Level ◽  
Range Order Parameter ◽  
Equiatomic Composition ◽  
Formation Model ◽  
Indium Alloys ◽  
Dependent Behaviour

The complex formation model has been used to extract the atomic level interactions in liquid Sb-In alloys. The phase diagram, the concentration fluctuations and the chemical short range order parameter indicate that the chemical complexes of the equiatomic composition (SbIn) exist in the liquid phase. The nature of interactions between Sb, In and the complexes (SbIn) in the liquid phase are attractive. The observed concentration dependent behaviour of activity, HM, GxsSxs and Scc(0) have been successfully explained.

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