Phase equilibria at high temperatures in oxide systems involving changes in oxidation states

1958 ◽  
Vol 256 (3) ◽  
pp. 171-207 ◽  
Author(s):  
A. Muan
2006 ◽  
Vol 45 ◽  
pp. 17-24
Author(s):  
Matvei Zinkevich

This paper shows how phase equilibria and thermodynamic properties of various multicomponent oxide systems can be represented with the use of model equations for the Gibbs energies of all phases as functions of temperature and composition. Starting from the stoichiometric phases and random solutions, the complexity of the models increases tremendously when ordering tendencies or certain defects in the lattice of ionic crystals, such as vacancies and/or variable oxidation states have to be taken into account.


1998 ◽  
Vol 6 (2) ◽  
pp. 79-94 ◽  
Author(s):  
A. Hellwig ◽  
M. Palm ◽  
G. Inden

2001 ◽  
Vol 141-142 ◽  
pp. 689-694 ◽  
Author(s):  
Alexander Ye. Barantchikov ◽  
Andrey N. Baranov ◽  
Vladimir K. Ivanov ◽  
Nickolay N. Oleynikov ◽  
Yuriy D. Tretyakov

2020 ◽  
Vol 299 ◽  
pp. 468-474 ◽  
Author(s):  
Gennady G. Mikhailov ◽  
L.A. Makrovets ◽  
O.V. Samoilova

Thermodynamic modeling of phase equilibria in a liquid metal of Fe–La–Ce–O system at 1600 °С, using the technique of constructing the solubility surfaces for the components of a metal, was carried out. The calculation technique allowed assessing the depth of liquid iron de-oxidation at a complex use of lanthanum and cerium as deoxidizing agents. Also, diagrams of de-oxidants’ consumption for one ton of liquid oxygen-containing iron were calculated in the course of the work. Carrying out a calculation of the solubility surfaces for the components of a metal required simulation of phase diagrams of the following oxide systems: FeO–La2O3–Ce2O3, FeO–CeO2–La2O3, CeO2–La2O3–Ce2O3. The obtained results might be of interest for optimization of the use of rare-earth metals in steelmaking technology.


2007 ◽  
Vol 71 (8) ◽  
pp. 1183-1186 ◽  
Author(s):  
L. B. Vedmid’ ◽  
V. F. Balakirev ◽  
A. M. Yankin ◽  
Yu. V. Golikov

1998 ◽  
Vol 19 (5) ◽  
pp. 409-411
Author(s):  
N. A. Gokcen ◽  
L. L. Oden

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