Thermodynamic calculation of phase equilibria in the Al–Fe–Zn–O system

IF 1.6 4区材料科学 Q4 MATERIALS SCIENCE, MULTIDISCIPLINARY

High Temperature Materials and Processes Pub Date : 2022-01-01 DOI:10.1515/htmp-2022-0249

N. Matsumoto, T. Tokunaga

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引用次数: 0

Abstract

Abstract The thermodynamics of the phase equilibria in the Al–Fe–Zn–O quaternary system was studied using the calculation of phase diagrams method to understand the oxidation behavior of the Zn bath surface during galvanizing process. The thermodynamic parameters for the Gibbs energies of the different constituent phases in the binary and ternary systems relevant to this quaternary system were taken mainly from previous studies. In this study, the thermodynamic assessment of the Al2O3–ZnO system was carried out based on the available experimental data, and some modifications to the thermodynamic model and/or parameters for the Fe–Zn–O ternary system were made to maintain consistency with the thermodynamic descriptions of other binary and ternary systems, making up the Al–Fe–Zn–O quaternary system adopted in this study. The calculated results on the ternary and quaternary systems generally agreed with the available experimental results on phase equilibria. The set of thermodynamic parameters enabled us to calculate the phase equilibria in the Al–Fe–Zn–O quaternary system over the entire composition and temperature ranges.

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Al–Fe–Zn–O体系相平衡的热力学计算

摘要:采用相图计算方法研究了Al-Fe-Zn-O四元体系的相平衡热力学，以了解镀锌过程中锌浴表面的氧化行为。与该四元体系相关的二元和三元体系中不同组成相的吉布斯能的热力学参数主要来源于前人的研究。本研究根据已有的实验数据对Al2O3-ZnO体系进行了热力学评价，并对Fe-Zn-O三元体系的热力学模型和/或参数进行了一些修改，使其与其他二、三元体系的热力学描述保持一致，构成了本研究采用的Al-Fe-Zn-O四元体系。对三元体系和四元体系的计算结果与已有的相平衡实验结果基本一致。这组热力学参数使我们能够计算出Al-Fe-Zn-O四元体系在整个组成和温度范围内的相平衡。

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来源期刊

High Temperature Materials and Processes 工程技术-材料科学：综合

CiteScore

2.50

自引率

0.00%

发文量

审稿时长

3.9 months

期刊介绍： High Temperature Materials and Processes offers an international publication forum for new ideas, insights and results related to high-temperature materials and processes in science and technology. The journal publishes original research papers and short communications addressing topics at the forefront of high-temperature materials research including processing of various materials at high temperatures. Occasionally, reviews of a specific topic are included. The journal also publishes special issues featuring ongoing research programs as well as symposia of high-temperature materials and processes, and other related research activities. Emphasis is placed on the multi-disciplinary nature of high-temperature materials and processes for various materials in a variety of states. Such a nature of the journal will help readers who wish to become acquainted with related subjects by obtaining information of various aspects of high-temperature materials research. The increasing spread of information on these subjects will also help to shed light on relevant topics of high-temperature materials and processes outside of readers’ own core specialties.