Affiliation:
1. School of Material Science and Engineering, Central South University, Changsha, Hunan, China
2. Hunan Institute for Drug Control, Changsha, Hunan, China
3. School of Material Science and Engineering, Central South University, Changsha, Hunan, China + Key Laboratory of Non-ferrous Metallic Materials Science and Engineering, Ministry of Education, Changsha, Hunan, China
Abstract
The phase equilibria of Bi-Te-RE (Yb, Nd, Sm, Er, Tb) at 673 K were established through equilibrated alloys. The isothermal sections of Bi-Te-RE (Yb, Nd, Sm, Er, Tb) at 673 K 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) was established, while 3 three-phase regions (NdTe2+?+Bi2Te3, NdTe2+?+Bi, Nd2Te3+Bi+BiTeNd) in Bi-Te-Nd system, 3 threephase 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 were also identified, respectively. Among the Bi-Te-RE (Nd, Sm, Er, Tb, Yb) systems, the solubilities of RE in Bi2Te3 were 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 became larger with the increase in RE atomic number. A ternary compound BiTeNd in the Bi-Te-Nd ternary system was confirmed in this work.
Publisher
National Library of Serbia
Subject
Materials Chemistry,Metals and Alloys,Mechanics of Materials,Geotechnical Engineering and Engineering Geology
Reference34 articles.
1. F. J. DiSalvo, Thermoelectric Cooling and Power Generation, Science, 285 (5428) (1999) 703-706. http://dx.doi.org/10.1126/science.285.5428.703
2. V. L. Kuznetsov, L. A. Kuznetsova, A. E. Kaliazin & D. M. Rowe, High performance functionally graded and segmented Bi2Te3-based materials for thermoelectric power generation, Science, 37(2002) 2893-2897. https://doi.org/10.1023/A:1016092224833
3. H.P. Hu, K.Y. Xia, T.J. Zhu, X.B. Zhao, Recent Advances in Ag-Based Superionic Thermoelectric Materials, Chinese Journal of Rare Metals, 45(2021) 513-529. https://doi.org/10.13373/j.cnki.cjrm.XY20070024
4. Q.F. Chen，X.X. Wang，Z.S. Wu，C.Y. Liu，L. Miao, Recent Advances in SnSe-Based Thermoelectric Materials, Chinese Journal of Rare Metals. 44(2020) 1316-1324. https://doi.org/10.13373/j.cnki.cjrm.XY19050002
5. P. Liu, L.C. Liu, H.R. Gong, Stacking fault energy and electronic structure of molybdenum under solid solution softening/hardening, Journal of Central South University, 28(2021) 39-41. https://doi.org/10.1007/s11771-021-4584-2
Cited by
1 articles.
订阅此论文施引文献
订阅此论文施引文献，注册后可以免费订阅5篇论文的施引文献，订阅后可以查看论文全部施引文献