J Mater Sci Technol ›› 2000, Vol. 16 ›› Issue (02): 181-182.

• Research Articles • Previous Articles     Next Articles

Preparation of DyFe2 by the reduction-diffusion process

Guangsi GUO, Guangqiang LI, Zhenqi HUANG, Zhitong SUI, Liang LIU, Yulin ZHOU   

  1. School of Materials and Metallurgy, Northeastern University, Shenyang 110006, China...
  • Received:1999-07-02 Revised:1999-12-28 Online:2000-03-28 Published:2009-10-10
  • Contact: Guangsi GUO

Abstract: The free energy change for the reduction-diffusion reaction which was used to prepare the DyFe2 Dy2O3(s) + 3Ca(g) + 4Fe(s) = 3CaO(s) + 2DyFe(2)(s) intermetallic compound powder was calculated. The reduction-diffusion experiments were carried out at 1073, 1123, 1273 and 1373 K respectively using powders of Dy2O3, iron, and calcium grains as raw materials. XRD and EDX analysis confirmed that DyFe2 was formed by the diffusion of Dy into Fe.

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