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

被引：4
|
作者：
Wei, Wenjie [1 ]
Li, Shu [1 ]
Wang, Hongmei [1 ]
Cao, Zhanmin [1 ]
机构：
[1] Univ Sci & Technol Beijing, Sch Met & Ecol Engn, Beijing, Peoples R China
来源：
JOURNAL OF PHASE EQUILIBRIA AND DIFFUSION | 2023年 / 44卷 / 05期
关键词：
Nd2O3-CaO-Fe2O3; system; phase equilibria; x-ray diffraction; SPIN REORIENTATION TRANSITION; THERMODYNAMIC PROPERTIES; PHYSICAL-PROPERTIES; CRYSTAL-STRUCTURE; COMPLEX OXIDES; EQUILIBRIA; PEROVSKITE; FE; CA; NONSTOICHIOMETRY;
D O I：
10.1007/s11669-023-01069-5
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 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 Nd1-xCaxFeO3-delta formed in the ranges of 0 <= x <= 0.2, 0.5 <= x <= 0.6, and 0.6 < x <= 1 were found. Ternary compound Ca1-xNd1+xFeO4-delta 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.
引用
收藏
页码：631 / 641
页数：11
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