Phase equilibria of Bi-Te-RE (Yb,Nd,Sm,Er,Tb) ternary systems at 673K

IF 0.9 4区材料科学 Q3 METALLURGY & METALLURGICAL ENGINEERING Journal of Mining and Metallurgy Section B-Metallurgy Pub Date : 2022-01-01 DOI:10.2298/jmmb211118007z

L.-G. Zhang, Q. Song, M. Tan, Y. Jiang, L.-B. Liu

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引用次数: 1

Abstract

The phase equilibria of Bi-Te-RE (Yb, Nd, Sm, Er, Tb) at 673K were established through equilibrated alloys, the isothermal sections of Bi-Te-RE (Yb, Nd, Sm, Er, Tb) at 673K were established according to the result of Scanning Electron Microscopy (SEM), Electron probe micro-analysis (EPMA) and Powder X-ray diffractometry (XRD). In the Bi-Te-Yb system at 673 K, the existence of 4 three-phase equilibria (YbTe+Bi2Te3+Te, YbTe+Bi2Te3+?, YbTe+Bi+?, YbTe+Yb5Bi3+Yb4Bi3) has been established, while 3 three-phase regions (NdTe2+?+Bi2Te3, NdTe2+?+Bi, Nd2Te3+Bi+BiTeNd) in Bi-Te-Nd system, 3 three-phase regions (SmTe3+Te+Bi2Te3, SmTe1.8+ Bi2Te3+?, SmTe1.8+?+Bi) in Bi-Te-Nd system, 3 three-phase regions (TbTe3+Te+Bi2Te3, Tb4Te7+Bi2Te3+?, TbTe+Bi+?) in Bi-Te-Nd system, and 4 three-phase regions (ErTe3+Te+Bi2Te3, ErTe3+Bi2Te3+Er2Te3, Bi2Te3+Er2Te3+?, Er2Te3+?+ErTe, ?+ErTe+Bi) in Bi-Te-Nd system have also been identified respectively. Among the Bi-Te-RE (Nd, Sm, Er, Tb, Yb) systems, the solubilities of RE in Bi2Te3 are 0.19 at % Nd, 0.22 at % Sm, 0.28 at % Tb, 0.35 at %Er, and 0.37 at % Yb. In general, the maximum solubility of elements in Bi2Te3 phase alloy become more and more larger with the increase in RE atomic number. A ternary compound BiTeNd in the Bi-Te-Nd ternary system was confirmed in this work.

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673K时Bi-Te-RE (Yb,Nd,Sm,Er,Tb)三元体系的相平衡

通过平衡合金建立了Bi-Te-RE (Yb, Nd, Sm, Er, Tb)在673K处的相平衡，通过扫描电镜(SEM)、电子探针显微分析(EPMA)和粉末x射线衍射(XRD)建立了Bi-Te-RE (Yb, Nd, Sm, Er, Tb)在673K处的等温截面。在673 K的Bi-Te-Yb体系中，存在YbTe+Bi2Te3+Te、YbTe+Bi2Te3+?, YbTe + Bi + ?， YbTe+Yb5Bi3+Yb4Bi3)，而三个三相区(NdTe2+?+ Bi2Te3, NdTe2 + ?+Bi, Nd2Te3+Bi+BiTeNd)， 3个三相区(SmTe3+Te+Bi2Te3, SmTe1.8+ Bi2Te3+?， SmTe1.8+?+Bi)在Bi-Te- nd体系中，3个三相区(TbTe3+Te+Bi2Te3, Tb4Te7+Bi2Te3+?在Bi-Te- nd体系中，有4个三相区(ErTe3+Te+Bi2Te3、ErTe3+Bi2Te3+Er2Te3、Bi2Te3+Er2Te3+?Er2Te3 + ?在Bi- te - nd体系中分别鉴定出了+ErTe、?+ErTe+Bi。在Bi-Te-RE (Nd, Sm, Er, Tb, Yb)体系中，RE在Bi2Te3中的溶解度分别为% Nd = 0.19， % Sm = 0.22， % Tb = 0.28， %Er = 0.35， % Yb = 0.37。总的来说，元素在Bi2Te3相合金中的最大溶解度随着RE原子序数的增加而越来越大。本文证实了Bi-Te-Nd三元体系中存在一种三元化合物BiTeNd。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Mining and Metallurgy Section B-Metallurgy 工程技术-冶金工程

CiteScore

2.00

自引率

40.00%

发文量

审稿时长

2 months

期刊介绍： University of Belgrade, Technical Faculty in Bor, has been publishing the journal called Journal of Mining and Metallurgy since 1965 and in 1997 it was divided in two independent journals dealing with mining and metallurgy separately. Since 2009 Journal of Mining and Metallurgy, Section B: Metallurgy has been accepted in Science Citation Index Expanded. Journal of Mining and Metallurgy, Section B: Metallurgy presents an international medium for the publication of contributions on original research which reflect the new progresses in theory and practice of metallurgy. The Journal covers the latest research in all aspects of metallurgy including hydrometallurgy, pyrometallurgy, electrometallurgy, transport phenomena, process control, solidification, mechanical working, solid state reactions, materials processing, surface treatment and relationships among processing, structure, and properties of materials.