Thermodynamic assessment of the Co-Th and Fe-Th systems

C. P. Wang; P. Yu; X. J. Liu; Ikuo Ohnuma; R. Kainuma; K. Ishida

doi:10.1016/j.jallcom.2007.03.003

Thermodynamic assessment of the Co-Th and Fe-Th systems

C. P. Wang, P. Yu, X. J. Liu, Ikuo Ohnuma, R. Kainuma, K. Ishida

ENG - Metallurgy

Research output: Contribution to journal › Article › peer-review

14 Citations (Scopus)

Abstract

The thermodynamic assessments of the Co-Th and Fe-Th binary systems were carried out by using the calculation of phase diagrams (CALPHAD) method on the basis of the experimental data including the thermodynamic properties and phase equilibria. The Gibbs free energies of the liquid, bcc, fcc, and hcp phases were described by subregular solution model with the Redlich-Kister equation, and those of the intermetallic compounds (Co₁₇Th₂, Co₅Th, Co₇Th₂, CoTh, Co₃Th₇, Fe₁₇Th₂, Fe₅Th, Fe₇Th₂, Fe₃Th and Fe₃Th₇) in these two binary systems were described by sublattice model. The thermodynamic parameters of the Co-Th and Fe-Th binary systems were optimized for reproducing the experimental data, respectively, and an agreement between the calculated results and experimental data was obtained in each binary system.

Original language	English
Pages (from-to)	150-156
Number of pages	7
Journal	Journal of Alloys and Compounds
Volume	457
Issue number	1-2
DOIs	https://doi.org/10.1016/j.jallcom.2007.03.003
Publication status	Published - 2008 Jun 12

Keywords

Phase diagrams
Rare earth alloys and compounds
Thermodynamic modeling

ASJC Scopus subject areas

Mechanics of Materials
Mechanical Engineering
Metals and Alloys
Materials Chemistry

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title = "Thermodynamic assessment of the Co-Th and Fe-Th systems",

abstract = "The thermodynamic assessments of the Co-Th and Fe-Th binary systems were carried out by using the calculation of phase diagrams (CALPHAD) method on the basis of the experimental data including the thermodynamic properties and phase equilibria. The Gibbs free energies of the liquid, bcc, fcc, and hcp phases were described by subregular solution model with the Redlich-Kister equation, and those of the intermetallic compounds (Co17Th2, Co5Th, Co7Th2, CoTh, Co3Th7, Fe17Th2, Fe5Th, Fe7Th2, Fe3Th and Fe3Th7) in these two binary systems were described by sublattice model. The thermodynamic parameters of the Co-Th and Fe-Th binary systems were optimized for reproducing the experimental data, respectively, and an agreement between the calculated results and experimental data was obtained in each binary system.",

keywords = "Phase diagrams, Rare earth alloys and compounds, Thermodynamic modeling",

author = "Wang, {C. P.} and P. Yu and Liu, {X. J.} and Ikuo Ohnuma and R. Kainuma and K. Ishida",

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AU - Wang, C. P.

AU - Yu, P.

AU - Liu, X. J.

AU - Ohnuma, Ikuo

AU - Kainuma, R.

AU - Ishida, K.

PY - 2008/6/12

Y1 - 2008/6/12

N2 - The thermodynamic assessments of the Co-Th and Fe-Th binary systems were carried out by using the calculation of phase diagrams (CALPHAD) method on the basis of the experimental data including the thermodynamic properties and phase equilibria. The Gibbs free energies of the liquid, bcc, fcc, and hcp phases were described by subregular solution model with the Redlich-Kister equation, and those of the intermetallic compounds (Co17Th2, Co5Th, Co7Th2, CoTh, Co3Th7, Fe17Th2, Fe5Th, Fe7Th2, Fe3Th and Fe3Th7) in these two binary systems were described by sublattice model. The thermodynamic parameters of the Co-Th and Fe-Th binary systems were optimized for reproducing the experimental data, respectively, and an agreement between the calculated results and experimental data was obtained in each binary system.

AB - The thermodynamic assessments of the Co-Th and Fe-Th binary systems were carried out by using the calculation of phase diagrams (CALPHAD) method on the basis of the experimental data including the thermodynamic properties and phase equilibria. The Gibbs free energies of the liquid, bcc, fcc, and hcp phases were described by subregular solution model with the Redlich-Kister equation, and those of the intermetallic compounds (Co17Th2, Co5Th, Co7Th2, CoTh, Co3Th7, Fe17Th2, Fe5Th, Fe7Th2, Fe3Th and Fe3Th7) in these two binary systems were described by sublattice model. The thermodynamic parameters of the Co-Th and Fe-Th binary systems were optimized for reproducing the experimental data, respectively, and an agreement between the calculated results and experimental data was obtained in each binary system.

KW - Phase diagrams

KW - Rare earth alloys and compounds

KW - Thermodynamic modeling

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