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.

scholarly journals Thermodynamic assessment of the Co-Mg binary system

2021 ◽  
pp. 51-51
Author(s):  
L.-F. Yang ◽  
X-D Si ◽  
H.-D. Zhang ◽  
F.-G. Gao ◽  
Y.-P. Zeng ◽  
...  
Keyword(s):  
Experimental Data ◽  
Phase Diagram ◽  
Binary System ◽  
Literature Review ◽  
Thermodynamic Assessment ◽  
Thermodynamic Description ◽  
Thermodynamic Optimization ◽  
Experimental Phase ◽  
Experimental Phase Diagram ◽  
Self Consistent

No thermodynamic description was performed for the Co-Mg binary system according to literature review. Consequently, this binary system has been investigated by means of CALPHAD (CALculation of PHAse Diagrams) approach in the present work. The experimental phase diagram and thermodynamic data available in the literature were critically assessed. Based on the reliable literature data, a new set of self-consistent thermodynamic parameters for the Co-Mg system is obtained. The calculated results agree well with the experimental data from the literature, indicating the reasonability of the present thermodynamic optimization.

Thermodynamic Evaluation and Assessment of the Ti-U Binary System

2012 ◽  
Vol 187 ◽  
pp. 272-277 ◽  
Author(s):  
Zhan Min Cao ◽  
Kun Peng Wang ◽  
Guang Wei Du ◽  
Zhi Yu Qiao
Keyword(s):  
Phase Diagram ◽  
Binary System ◽  
Thermodynamic Description ◽  
Phase Diagram Data ◽  
Thermodynamic Evaluation ◽  
Miedema Model ◽  
Experimental Phase ◽  
Experimental Phase Diagram ◽  
Thermo Calc Software ◽  
Good Agreement

The thermodynamic description of the Ti-U binary system is obtained by the CALPHAD method using Thermo-Calc software and based on the estimated thermodynamic properties using ion-bonding model and Miedema model as well as the experimental phase diagram information. The liquid, αU, βU, δTi, and γ phases are assumed to be substitutional solutions with Redlich-Kister formula for the expressions of their excess Gibbs energy. The intermetallic compound TiU2 is treated as a stoichiometric compound. The calculated phase equlibria are in good agreement with the estimated and available experimental phase diagram data.

Thermodynamic Re-Assessment of the Co-Nb System

2008 ◽  
Vol 1128 ◽  
Author(s):  
Cuiyun He ◽  
Frank Stein ◽  
M. Palm ◽  
Dierk Raabe
Keyword(s):  
Experimental Data ◽  
Phase Diagram ◽  
Thermodynamic Assessment ◽  
Phase Diagram Data ◽  
Calculated Phase Diagram ◽  
Experimental Phase ◽  
Laves Phases ◽  
Experimental Phase Diagram ◽  
Gibbs Energies ◽  
The Individual

AbstractA new thermodynamic assessment of the Co-Nb system is presented. All experimental phase diagram data available from the literature have been critically reviewed and assessed using thermodynamic models for the Gibbs energies of the individual phases (Thermo-Calc). Compared to previous assessments more elaborate models for the description of the C14 and C36 Laves phases and for the μ phase were employed. Thereby a calculated phase diagram is obtained which satisfactorily agrees with the experimental data.

scholarly journals Thermodynamic modeling of the Al-K system

2009 ◽  
Vol 45 (1) ◽  
pp. 89-93 ◽  
Author(s):  
Y. Du ◽  
X. Yuan ◽  
W. Sun ◽  
B. Hu
Keyword(s):  
Phase Diagram ◽  
Gas Phase ◽  
Thermodynamic Modeling ◽  
Phase Diagram Data ◽  
Ideal Gas ◽  
Monotectic Reaction ◽  
Present Calculation ◽  
Experimental Phase ◽  
Experimental Phase Diagram ◽  
Ideal Gas Model

A thermodynamic modeling for the Al-K system is conducted. The thermodynamic parameters for liquid, (Al), and (K) are evaluated by using the experimental phase diagram data from the literature. The gas phase is described with an ideal gas model. The calculated Al-K phase diagram agrees well with the experimental data. In particular, the observed monotectic reaction is well described by the present calculation.

Hexadecane (C16H34) + 1-Hexadecanol (C16H33OH) Binary System:  Crystal Structures of the Components and Experimental Phase Diagram. Application to Thermal Protection of Liquids

2005 ◽  
Vol 17 (12) ◽  
pp. 3302-3310 ◽  
Author(s):  
Valérie Métivaud ◽  
Adeline Lefèvre ◽  
Lourdes Ventolà ◽  
Philippe Négrier ◽  
Evelyn Moreno ◽  
...  
Keyword(s):  
Phase Diagram ◽  
Binary System ◽  
Crystal Structures ◽  
Thermal Protection ◽  
Experimental Phase ◽  
Experimental Phase Diagram

Thermodynamic assessment of Hafnium Iridium binary system

2018 ◽  
Vol 115 (5) ◽  
pp. 503 ◽  
Author(s):  
Mohamed Idbenali ◽  
Colette Servant ◽  
M’barek Feddaoui
Keyword(s):  
Phase Diagram ◽  
Solid Solution ◽  
Thermodynamic Assessment ◽  
Phase Diagram Data ◽  
High Temperature Phase ◽  
Temperature Phase ◽  
Calphad Approach ◽  
Stoichiometric Compound ◽  
Sublattice Model ◽  
Good Agreement

The Hf–Ir system has been thermodynamically modeled by the CALPHAD approach. Hf2Ir, αHfIr, βHfIr, γHfIr (high temperature phase) and HfIr3 which have a homogeneity range, were treated as the formula (Hf,Ir)x:(Ir,Hf)1−x by a two-sublattice model with a mutual substitution of Hf and Ir in both sublattices.Hf5Ir3 has been treated as a stoichiometric compound while a solution model has been used for the description of the FCC (Ir) solid solution. Additionally, two different models describing the excess Gibbs energy for the liquid and for the solid solutions (BCC, FCC and HCP) were used and their predictions are compared. The calculations based on the thermodynamic modeling are in good agreement with the phase diagram data and experimental thermodynamic values available in the literature.

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.

scholarly journals Thermodynamic reassessment of the La-Mn system

2012 ◽  
Vol 48 (3) ◽  
pp. 391-394
Author(s):  
Y. Wang ◽  
B. Hu ◽  
S. Liu ◽  
Y. Du
Keyword(s):  
Experimental Data ◽  
Phase Diagram ◽  
Thermodynamic Data ◽  
Calculated Phase Diagram ◽  
Miscibility Gap ◽  
Calphad Approach ◽  
Experimental Phase ◽  
Experimental Phase Diagram ◽  
Gibbs Energies ◽  
Consistent Thermodynamic Data

The binary La-Mn system is investigated by CALPHAD approach. The experimental phase diagram and thermodynamic data available in the literature are critically reviewed and assessed using the thermodynamic models for the Gibbs energies of individual phases. A set of consistent thermodynamic data for the La-Mn system is obtained by optimization of the selected experimental data. The miscibility gap is no more existent in the optimized phase diagram. The calculated phase diagram agrees well with the experimental data.

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