Phase diagram and thermochemical properties of the ZrTa system. An assessment based on Gibbs energy modelling

1995 ◽  
Vol 226 (1-2) ◽  
pp. 174-184 ◽  
Author(s):  
A. Fernández Guillermet
Keyword(s):  
Phase Diagram ◽  
Gibbs Energy ◽  
Thermochemical Properties ◽  
Energy Modelling

Calphad description of the Ge-Mn system

2014 ◽  
Vol 1642 ◽  
Author(s):  
Alexandre Berche ◽  
Jean-Claude Tédenac ◽  
Philippe Jund ◽  
Stéphane Gorsse
Keyword(s):  
Phase Diagram ◽  
Liquid Phase ◽  
Thermodynamic Properties ◽  
Gibbs Energy ◽  
Critical Review ◽  
Thermodynamic Description ◽  
Calphad Method ◽  
Review Of The Literature ◽  
Solid Phases

ABSTRACTThe germanium-manganese system has been experimentally studied but no Calphad description is available yet. After a critical review of the literature concerning the phase diagram and the thermodynamic properties, a thermodynamic description of the Gibbs energy of the phases is performed using the Calphad method. The liquid phase is described with an associated model and the variation to the stoichiometry of the solid phases is taken into account.

Experimental Study and Thermodynamic Calculation of BaO-Lu2O3 Binary System

2016 ◽  
Vol 852 ◽  
pp. 443-448 ◽  
Author(s):  
Xin Yu Ye ◽  
Qin Li ◽  
Yang Luo ◽  
Di Wu
Keyword(s):  
Phase Diagram ◽  
High Temperature ◽  
Binary System ◽  
Gibbs Energy ◽  
High Temperature Superconductivity ◽  
Intermediate Phase ◽  
Calculated Phase Diagram ◽  
Intermediate Compound ◽  
Experimental Phase Diagram ◽  
Metallurgical Slags

Only one intermediate compound Ba3Lu4O9was identified at 1373, 1573 and 1773K in the BaO-Lu2O3system in present work.Based on the available experimental phase diagram and relevant thermodynamic data, BaO-Lu2O3 binary system was optimized and calculated by using CALPHAD method. The Gibbs free energy of high temperature solution was described by an ionic two-sublattice model as (Ba2+,Lu3+)P(O2-)Q. The calculated phase diagram, Gibbs energy of intermediate phase Ba3Lu4O9and Gibbs energy of mixingagreewell with experimental resultswithin error limits. The study will offer theoretical basis for further research of the phosphor matrix system of BaO-Lu2O3-SiO2, but also provide new idea for the phase diagram and thermodynamic research on related metallurgical slags, refractories, high-temperature superconductivity material systems.

Sign in / Sign up

Export Citation Format

Share Document