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 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.

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

scholarly journals Thermodynamic modeling of the Fe-Mg-Si system

2007 ◽  
Vol 43 (1) ◽  
pp. 39-56 ◽  
Author(s):  
Y. Du ◽  
J.R. Zhao ◽  
C. Zhang ◽  
H.L. Chen ◽  
L.J. Zhang
Keyword(s):  
Phase Diagram ◽  
Thermodynamic Data ◽  
Dynamic Models ◽  
Thermodynamic Description ◽  
Reaction Scheme ◽  
Experimental Phase ◽  
Experimental Phase Diagram ◽  
Gibbs Energies ◽  
High Temperature Form ◽  
Measured Phase

A thermo dynamic modeling for the Fe-Mg-Si system is conducted. All of the experimental phase diagram and thermodynamic data available from the literature are critically reviewed and assessed using thermo dynamic models for the Gibbs energies of individual phases. The thermodynamic parameters for ternary liquid as well as binary phases ?FeSi, (high-temperature form of FeSi2) and FeSi showing noticeable solubilities for Mg are evaluated in the optimization. Comparisons between the calculated and measured phase diagrams show that the measured isothermal six-lions at 1600?, 1454?, 727? and 710?C, the observed regions of primary phases are satisfactorily accounted for by the thermodynamic description. The limited thermodynamic data concerning the activity of Mg in liquid at 1350?C are found to be inconsistent with the well established phase relations. The liquidus projection and reaction scheme for the entire Fe-Mg-Si system are also presented. .

Thermodynamic Evaluation of the Fe-Pr Binary System

2010 ◽  
Vol 654-656 ◽  
pp. 2442-2445 ◽  
Author(s):  
Guo Jun Zhou ◽  
De Chang Zeng
Keyword(s):  
Experimental Data ◽  
Phase Diagram ◽  
Binary System ◽  
Intermediate Phase ◽  
Eutectic Reaction ◽  
Thermodynamic Description ◽  
Liquid Solution ◽  
Solution Phase ◽  
Mixing Enthalpy ◽  
Thermodynamic Evaluation

The Fe–Pr binary system was thermodynamic evaluation by means of the CALPHAD method based on phase diagram experimental data from the literature and a few values of the mixing enthalpy in the liquid phase obtained by the Miedema theory technique. Each of the selected data values is given a certain weight, which is chosen and adjusted based on the thermodynamic data and diagram phase data. A consistent thermodynamic description of the Fe–Pr binary system is presented: only one intermediate compound, Fe17Pr2, is stable in the system and forms peritectically at 1371K. An eutectic reaction L↔Pr+ Fe17Pr2 occurs at 939K and the eutectic liquid contains 82 at% Pr, five solid solution phases (Fe-rich αFe, γFe and δFe, Pr-rich αPr and βPr) and the liquid solution phase were considered in the evaluation. The intermediate phase was treated as stoichiometric compound, the solid solutions as ideal and the liquid solution phase by the Redlich–Kister formalism. The calculated phase diagram and thermodynamic properties are in good agreement with available experimental data.

scholarly journals Spectroscopic Characterization of Urea Aqueous Solutions: Experimental Phase Diagram of the Urea–Water Binary System

2013 ◽  
Vol 67 (10) ◽  
pp. 1205-1209 ◽  
Author(s):  
Ivana Durickovic ◽  
Laura Thiébaud ◽  
Patrice Bourson ◽  
Thomas Kauffmann ◽  
Mario Marchetti
Keyword(s):  
Phase Diagram ◽  
Binary System ◽  
Aqueous Solutions ◽  
Spectroscopic Characterization ◽  
Experimental Phase ◽  
Experimental Phase Diagram

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.

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