Isothermal section of Gd-Sm-Co ternary system at 773 K
The isothermal section of the phase diagram of the Gd-Sm-Co ternary system at 773 K was investigated by X-ray powder diffraction (XRD), differential thermal analysis (DTA), optical microscopy and scanning electron microscopy (SEM) techniques. The result shows that the isothermal section consists of...
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Published in | Journal of rare earths Vol. 31; no. 4; pp. 415 - 419 |
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Main Author | |
Format | Journal Article |
Language | English |
Published |
Elsevier B.V
01.04.2013
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Subjects | |
Online Access | Get full text |
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Summary: | The isothermal section of the phase diagram of the Gd-Sm-Co ternary system at 773 K was investigated by X-ray powder diffraction (XRD), differential thermal analysis (DTA), optical microscopy and scanning electron microscopy (SEM) techniques. The result shows that the isothermal section consists of 12 single-phase regions, 16 two-phase regions and 5 three-phase regions. Five pairs of corresponding compounds of Gd-Co and Sin-Co systems, i.e., Gd2Co17 and Sm2Co~7, Gd2Co7 and Sm2Co7, GdCo3 and SmC03, GdCo: and SmCo:, Gd3Co and Sm3Co form continuous series of solid solutions. The maximum solid solubility of Sm in Gd4Co3 arid Gdl2Co7 were about 7.2 at.% and 47.8 at.% Sm, respectively. The maximum solid solubility of Gd in Sm5Col9 and SmsCo2 were about 4.7 at.% and 7.6 at.% Gd, respectively. The binary compounds Sm9Co4, GdCos and SmCo5 were not observed at 773 K. No ternary compound was found. |
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Bibliography: | ternary phase diagram; Gd-Sm-Co system; continuous series of solid solution; rare earths 11-2788/TF The isothermal section of the phase diagram of the Gd-Sm-Co ternary system at 773 K was investigated by X-ray powder diffraction (XRD), differential thermal analysis (DTA), optical microscopy and scanning electron microscopy (SEM) techniques. The result shows that the isothermal section consists of 12 single-phase regions, 16 two-phase regions and 5 three-phase regions. Five pairs of corresponding compounds of Gd-Co and Sin-Co systems, i.e., Gd2Co17 and Sm2Co~7, Gd2Co7 and Sm2Co7, GdCo3 and SmC03, GdCo: and SmCo:, Gd3Co and Sm3Co form continuous series of solid solutions. The maximum solid solubility of Sm in Gd4Co3 arid Gdl2Co7 were about 7.2 at.% and 47.8 at.% Sm, respectively. The maximum solid solubility of Gd in Sm5Col9 and SmsCo2 were about 4.7 at.% and 7.6 at.% Gd, respectively. The binary compounds Sm9Co4, GdCos and SmCo5 were not observed at 773 K. No ternary compound was found. ZHU Qiming, LIANG Jianlie , YAO Qingrong , DENG Jianqiu, MENG Jieli , HUANG Jiagao, ZHUANG Yinghong (1. School of Science, Guangxi University for Nationalities, Nanning 530006, China; 2. School of Material and Engineering, Guilin University of Electronic Technology, Guilin 541004, China; 3. Key Laboratory of Nonferrous Metal Materials and New Processing Technology, Guangxi University, Ministry of Educa- tion, Nanning 530006, China) ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 |
ISSN: | 1002-0721 2509-4963 |
DOI: | 10.1016/S1002-0721(12)60297-X |