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

页码：68 / 70

页数：3

共 12 条

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