The isothermal section of the Nd-Fe-Ga ternary system at 773 K

被引：14
作者：
Li, J. Q. [1 ,2 ]
Zhang, W. H. [1 ,2 ]
Yu, Y. J. [1 ,2 ]
Liu, F. S. [1 ,2 ]
Ao, W. Q. [1 ,2 ]
Yan, J. L. [1 ,2 ,3 ,4 ]
机构：
[1] Shenzhen Univ, Coll Mat Sci & Engn, Shenzhen 518060, Peoples R China
[2] Shenzhen Key Lab Special Funct Mat, Shenzhen 518060, Peoples R China
[3] Guangxi Univ, Coll Mat Sci & Engn, Nanning 530004, Guangxi, Peoples R China
[4] Guangxi Univ, Key Lab Nonferrous Met Mat & New Proc Technol, Minist Educ, Nanning 530004, Guangxi, Peoples R China
来源：
JOURNAL OF ALLOYS AND COMPOUNDS | 2009年 / 487卷 / 1-2期
基金：
中国国家自然科学基金;
关键词：
Rare earth alloys and compounds; Phase diagram; X-ray diffraction; MAGNETIC-PROPERTIES; PHASE-RELATIONS;
D O I：
10.1016/j.jallcom.2009.07.154
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 isothermal section of the Nd-Fe-Ga ternary system at 773 K was constructed using X-ray diffraction analysis. Ten binary compounds, Nd2Fe17, Nd5Fe17, Nd9Ga4, Nd5Ga3, NdGa, NdGa2, FeGa3, Fe3Ga4, alpha-Fe6Ga5 and alpha-Fe3Ga, and three ternary compounds, NdFe2Ga8, NdFe5Ga7 and Nd6Fe13Ga were existed in this isothermal section. The solid solutions Nd2Fe17.00-15.57Ga0-1.43 (Th2Zn17-type structure, space group R (3) over barm, NdFe5.46-4.65Ga6.(54-7.35) (ThMn12-type structure, space group 14/mmm) and Nd6Fe13.0-12.Ga-0(1.0-2.0) (La6Co11Ga3-type structure, space group 14/mcm) were formed by substitution of Ga for Fe in the compounds Nd2Fe17, NdFe5Ga7 and Nd6Fe13Ga at 773 K, respectively. The ternary compound NdFe2Ga8 is CaCo2Al8-type (space group Pbam) with a = 1.43742 (4), b = 1.24601 (4), c = 0.40479 (1)). The homogeneity range of NdGa2 is from 66.7 to 74.7 at.% Gain Nd-Ga side but the solid solubility of Fe in this compound is very small. The homogeneity ranges of Nd6Fe13Ga and NdFe5Ga7 are from 5.0 to 10.0 and from 50.3 to 56.5 at.% Ga, respectively. The maximum solid solubilities of Ga in Nd2Fe17 is 7.5. The homogeneity ranges for the other compounds are small. (C) 2009 Elsevier B.V. All rights reserved.
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页码：116 / 120
页数：5
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