1473 K空气中Nd2O3-CaO-Fe2O3体系的相关系

IF 1.5 4区材料科学 Q4 CHEMISTRY, PHYSICAL

Journal of Phase Equilibria and Diffusion Pub Date : 2023-11-28 DOI:10.1007/s11669-023-01069-5

Wenjie Wei, Shu Li, Hongmei Wang, Zhanmin Cao

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引用次数: 0

摘要

采用高温等温平衡技术研究了Nd2O3-CaO-Fe2O3体系在1473 K空气中的平衡相关系。通过x射线衍射(XRD)和扫描电镜能谱(SEM-EDS)对淬火样品进行分析，观察到12个两相平衡区和11个三相平衡区。在0≤x≤0.2、0.5≤x≤0.6和0.6 < x≤1范围内形成了一系列固溶体Nd1−xCaxFeO3−δ。三元化合物Ca1−xNd1+xFeO4−δ在1473 K下稳定，Ca对Nd的取代作用有限。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Phase Relations of the Nd2O3-CaO-Fe2O3 System at 1473 K in Air

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Phase Relations of the Nd2O3-CaO-Fe2O3 System at 1473 K in Air

The equilibrium phase relations of the Nd₂O₃-CaO-Fe₂O₃ system were investigated at 1473 K in air using a high-temperature isothermal equilibration technique followed by quenching. Using x-ray diffraction (XRD) and scanning electron microscopy with energy-dispersive spectroscopy (SEM-EDS) analysis of quenched samples, twelve two-phase equilibria regions and eleven three-phase equilibria regions were observed. A series of solid solutions Nd_1−xCa_xFeO_3−δ formed in the ranges of 0 ≤ x ≤ 0.2, 0.5 ≤ x ≤ 0.6, and 0.6 < x ≤ 1 were found. Ternary compound Ca_1−xNd_1+xFeO_4−δ was observed to be stable at 1473 K with limited substitution of Nd by Ca. The 1473 K isothermal section was constructed for the Nd₂O₃-CaO-Fe₂O₃ system.

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来源期刊

Journal of Phase Equilibria and Diffusion 工程技术-材料科学：综合

CiteScore

2.50

自引率

7.10%

发文量

审稿时长

1 months

期刊介绍： The most trusted journal for phase equilibria and thermodynamic research, ASM International''s Journal of Phase Equilibria and Diffusion features critical phase diagram evaluations on scientifically and industrially important alloy systems, authored by international experts. The Journal of Phase Equilibria and Diffusion is critically reviewed and contains basic and applied research results, a survey of current literature and other pertinent articles. The journal covers the significance of diagrams as well as new research techniques, equipment, data evaluation, nomenclature, presentation and other aspects of phase diagram preparation and use. Content includes information on phenomena such as kinetic control of equilibrium, coherency effects, impurity effects, and thermodynamic and crystallographic characteristics. The journal updates systems previously published in the Bulletin of Alloy Phase Diagrams as new data are discovered.