Study on High-Temperature Interaction Mechanism of Nd-Fe-As System

被引：2
作者：
Fu, Chenghui [1 ,2 ]
Huang, Run [1 ,2 ]
Xie, Wenhao [1 ,2 ]
Luo, Jinxiao [1 ,2 ]
Li, Yulian [1 ,2 ]
Zhang, Jinzhu [1 ,2 ]
机构：
[1] Guizhou Univ, Sch Met & Mat, Guiyang 550025, Guizhou, Peoples R China
[2] Guizhou Prov Key Lab Met Engn & Energy Proc Savin, Guiyang 550025, Guizhou, Peoples R China
来源：
MATERIALS | 2019年 / 12卷 / 19期
基金：
中国国家自然科学基金;
关键词：
Nd; Fe; As; compounds;
D O I：
10.3390/ma12193060
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：
In this study, Nd and As are mainly sealed into industrial pure Fe cylinders. The effect of different temperatures on the high-temperature interaction of an Nd-Fe-As ternary system is studied via X-ray diffraction, optical microscopy, and scanning electron microscopy after heat insulation for 30 h at 1173, 1223, and 1273 K. The results show that the common products under high-temperature interaction are NdAs, Fe17Nd2, and Fe. Fe12As5 is present at 1173 K, whereas Fe2As is produced at 1223 and 1273 K. The diffusion ability of Nd is weaker than that of As. Nd mainly diffuses through the Fe atomic vacancy mechanism. As mainly binds to Fe to form Fe and As compounds.
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页数：8
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