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

Thermodynamic assessment of the Co-Th and Fe-Th systems
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Co-Th 和 Fe-Th 系统的热力学评估

DOI:
10.1016/j.jallcom.2007.03.003
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发表时间:
2008-06
影响因子:
6.2
通讯作者:
--
中科院分区:
材料科学2区
文献类型:
--
作者:

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以Co-Th和Fe-Th二元体系的热力学性质和相平衡等实验数据为基础,采用相图计算(CALPHAD)方法对其进行了热力学评价。液相、bcc、fcc和hcp相的吉布斯自由能用Redlich-Kister方程用亚规则溶液模型描述,金属间化合物(Co17Th2、Co5Th、Co7Th2、CoTh、Co3Th7、Fe17Th2、Fe5Th、Fe7Th2、Fe3Th7和Fe3Th7)的吉布斯自由能用亚晶格模型描述。对Co-Th和Fe-Th二元体系的热力学参数进行了优化,分别再现了实验数据,计算结果与实验数据基本吻合。
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.
DOI: 10.1016/0022-5088(90)90412-d
发表时间: 1990
期刊: Journal of The Less Common Metals
影响因子: --
作者:
S. C. Axtell;Albert J. Bevolo-;O. Carlson
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