三元 Co-Fe-Ge 系统的相图 (I):实验

IF 1.9 3区 材料科学 Q4 CHEMISTRY, PHYSICAL
Yao-de Guo , Yohanes Hutabalian , Sinn-wen Chen
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引用次数: 0

摘要

Co-Fe-Ge 是一种重要的磁性和催化剂应用材料体系。然而,Co-Fe-Ge 三元体系的相平衡信息非常有限。本研究制备了在 950 ℃ 下平衡的三元 Co-Fe-Ge 合金。确定了各相的微观结构、化学成分和晶体结构。然后提出了 Co-Fe-Ge 三元体系在 950 ℃ 下的相平衡等温截面。在 Co5Ge3 和 Fe5Ge3 相之间形成了一个连续的固溶相,被标记为 β(Co,Fe)5Ge3 相。在 950 °C 时,体系中有五个三相区域。在贫Ge和富Ge两侧分别确认了宽阔的α2单相区和成分范围较大的液相区。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Phase diagram of ternary Co–Fe–Ge system (I): Experimental

Co–Fe–Ge is an important material system for magnetic and catalyst applications. However, phase equilibria information of the Co–Fe–Ge ternary system is limited. Ternary Co–Fe–Ge alloys equilibrated at 950 °C were prepared. The microstructures, chemical compositions and crystal structure of each phase were determined. The phase equilibria isothermal section at 950 °C of the Co–Fe–Ge ternary system was then proposed. A continuous solid solution phase was formed between the Co5Ge3 and Fe5Ge3 phases and was labeled the β(Co,Fe)5Ge3 phase. There are five three-phase regions in the system at 950 °C. A wide α2 single-phase, and liquid phase regions with large composition ranges being confirmed at the Ge-poor and Ge-rich sides, respectively.

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来源期刊
CiteScore
4.00
自引率
16.70%
发文量
94
审稿时长
2.5 months
期刊介绍: The design of industrial processes requires reliable thermodynamic data. CALPHAD (Computer Coupling of Phase Diagrams and Thermochemistry) aims to promote computational thermodynamics through development of models to represent thermodynamic properties for various phases which permit prediction of properties of multicomponent systems from those of binary and ternary subsystems, critical assessment of data and their incorporation into self-consistent databases, development of software to optimize and derive thermodynamic parameters and the development and use of databanks for calculations to improve understanding of various industrial and technological processes. This work is disseminated through the CALPHAD journal and its annual conference.
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