Thermodynamic Assessment of Zn-Fe-Nb Ternary System

被引：1
|
作者：
Long, Zhaohui [1 ,2 ,3 ]
Gong, Jin [1 ,2 ,3 ]
Ding, Jing [1 ,2 ,3 ]
Tang, Chihua [1 ,2 ,3 ]
Li, Zhi [1 ,2 ,3 ]
Yin, Fucheng [1 ,2 ,3 ]
机构：
[1] Xiangtan Univ, Key Lab Mat Design & Preparat Technol Hunan Prov, Xiangtan 411105, Hunan, Peoples R China
[2] Xiangtan Univ, Sch Mat Sci & Engn, Xiangtan 411105, Hunan, Peoples R China
[3] Xiangtan Univ, Natl Def Key Lab Key Film Mat Applicat Equipment, Xiangtan 411105, Hunan, Peoples R China
来源：
JOURNAL OF PHASE EQUILIBRIA AND DIFFUSION | 2016年 / 37卷 / 03期
基金：
中国国家自然科学基金;
关键词：
ab initio; CALPHAD; phase diagram; Zn-Fe-Nb; IRON-ZINC SYSTEM; PHASE-DIAGRAM; C SYSTEM; NIOBIUM; NBZN3;
D O I：
10.1007/s11669-016-0457-z
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The Nb-Zn binary system has been thermodynamically assessed using CALPHAD approach by combining available experimental data and the data from ab initio calculations of the formation enthalpies for NbZn2, NbZn3 and NbZn15. Solution phases including Liquid, Bcc, Hcp were modeled as substitutional phases, of which the excess Gibbs energies being formulated with the Redlich-Kister polynomial function. All the binary compounds were treated as stoichiometric phases. Incorporated with the reported thermodynamic parameters of Fe-Zn and Fe-Nb binary systems, two isothermal sections at 723 and 873 K of Zn-Fe-Nb ternary system were thermodynamically optimized where one stoichiometric ternary phase (tau) and the ternary solubility in intermetallic compound (epsilon) were taken into consideration. Furthermore, liquidus projection was predicted accordingly.
引用
收藏
页码：293 / 300
页数：8
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