Preparation of DyFe2 and TbFe2 by Reduction-Diffusion Process
摘要
The pure intermetallic compounds (Tb1-xDyx)Fe2 are super-magnetostriction materials, which were produced from DyFe2and 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 k J/mol respectively.
引用本文（GB/T 7714）
GuangsiGUO, GuangtaiWANG, ZhitongSUI. Preparation of DyFe2 and TbFe2 by Reduction-Diffusion Process[J]. Acta Scientiarum Naturalium Universitatis Sunyatseni, 2004.
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