Preparation of DyFe2 and TbFe2 by reduction-diffusion process

被引：0
|
作者：
Guo, GS [1 ]
Wang, GT
Sui, ZT
机构：
[1] Shenyang Inst Technol, Dept Mat Sci & Engn, Shenyang 110016, Peoples R China
[2] Northeastern Univ, Sch Met & Mat, Shenyang 110004, Peoples R China
来源：
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY | 2004年 / 20卷 / 01期
关键词：
Ca-Dy2O3-Fe; Ca-Tb4O7-Fe; reduction-diffusion; DyFe2; TbFe2; contracting core model;
D O I：
暂无
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The pure intermetallic compounds (Tb1-xDyx)Fe-2 are super-magnetostriction materials, which were produced from DyFe2 and TbFe2 in this paper. The thermodynamic possibility and kinetic feasible conditions for DyFe2 and TbFe2 preparation by reduction-diffusion in Ca-Dy2O3-Fe and Ca-Tb4O7-Fe systems were analyzed and the products of DyFe2 and TbFe2 were confirmed by XRD. The contracting core model was applied to describe the reduction-diffusion process in which the diffusion is a rate-controlled step. The apparent activation energies of DyFe2 and TbFe2 processes are 45 and 39 kJ/mol respectively.
引用
收藏
页码：68 / 70
页数：3
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