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

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A Correction to this article was published on 20 December 2023

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Abstract

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−δ 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−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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  1. School of Metallurgical and Ecological Engineering, University of Science & Technology Beijing, Beijing, China

    Wenjie Wei, Shu Li, Hongmei Wang & Zhanmin Cao

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Wei, W., Li, S., Wang, H. et al. Phase Relations of the Nd2O3-CaO-Fe2O3 System at 1473 K in Air. J. Phase Equilib. Diffus. 44, 631–641 (2023). https://doi.org/10.1007/s11669-023-01069-5

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