Solid state phase equilibria in the Fe-Pt-Dy ternary system at 900°C

被引：7
|
作者：
Ma Lei [1 ]
Gu Zhengfei
Zhong Xiaping
Cheng Gang
Zhou Bo
Xu Chengfu
机构：
[1] Guilin Univ Elect Technol, Dept Informat Mat Sci & Engn, Guilin 541004, Peoples R China
[2] Guilin Univ Technol, Dept Chem & Mat Engn, Guilin 541004, Peoples R China
来源：
JOURNAL OF ALLOYS AND COMPOUNDS | 2007年 / 427卷 / 1-2期
基金：
中国国家自然科学基金;
关键词：
transition metal compounds; rare earth compounds; phase diagram; crystal structure; X-ray diffraction;
D O I：
10.1016/j.jallcom.2006.02.063
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 solid state phase equilibria in the Fe-Pt-Dy ternary system at 900 degrees C (Dy <= 75 at.%) were investigated by X-ray diffraction (XRD), scanning electron microscopy (SEM) and energy dispersion spectroscopy (EDS) techniques. It is found that the 900 degrees C isothermal section consists of 18 single-phase regions, 33 two-phase regions and 16 three-phase regions. At 900 degrees C, it is observed that the maximum solid solubility of Pt in Fe2Dy and alpha-(Fe, Dy) is 5 at.% Pt and 3 at.% Pt, respectively. The binary phase Fe5Dy was not observed. The existence of DyPt5, DYPt3, DYPt2, DY3Pt4, DyPt, DY5Pt4, Dy5Pt3, Dy2Pt and Dy3Pt compounds is confirmed and the maximum solubility of Fe in them is below I at.% Fe; the maximum solubility of Dy in alpha-(Fe, Pt), gamma-(Fe, Pt), FePt, FePt3 and (Pt, Fe) (the solid solution of Fe in Pt) is 3 at.% Dy, 2 at.% Dy, 2 at.% Dy, 1.5 at.% Dy and 1.5 at.% Dy, respectively. (c) 2006 Elsevier B.V. All rights reserved.
引用
收藏
页码：130 / 133
页数：4
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