Acta Phys. -Chim. Sin. ›› 2004, Vol. 20 ›› Issue (10): 1239-1241.doi: 10.3866/PKU.WHXB20041014

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The Preparation of Fe-Co Alloy Nanoparticles by the Reduction of Aluminum Powders in a Mixed Sulfate Solution

Zhang Ting-Ting;Zhou Zeng-Jun;Zhang Qi-Yun;Li Xing-Guo   

  1. College of Chemistry and Molecular Engineering, Peking University; State Key Laboratory for Mesoscopic Physics, Beijing 100871
  • Received:2004-02-12 Revised:2004-04-26 Published:2004-10-15
  • Contact: Zhang Qi-Yun E-mail:qyzh@pku.edu.cn

Abstract: A cost effective and convenient method for preparing nanopowders of Fe-Co alloy has been developed. The finely divided powders of Fe-Co alloy in the form of solid-solution were obtained in the FeSO4•(NH4)2SO4 and CoSO4•(NH4)2SO4 mixed solution by the reduction of aluminum powders at 40 ℃ and pH~3.The product of Fe-Co alloy was identified by XRD method and the calculated size of these nanoparticles was about 15 nm. Meanwhile, the compositions of obtained samples were analyzed by ICP-AES method. Experiment indicated that the composition of the alloy could be easily controlled by changing the mass ratio of Fe2+:Co2+ in the solution.

Key words: Fe-Co alloy, Solid-solution, Nanopowders