物理化学学报 >> 2004, Vol. 20 >> Issue (10): 1239-1241.doi: 10.3866/PKU.WHXB20041014

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溶液中铝还原制备Fe-Co合金纳米粉体

张烃烃;周增均;张启运;李星国   

  1. 北京大学化学与分子工程学院; 北京大学介观物理国家重点实验室, 北京　100871
  • 收稿日期:2004-02-12 修回日期:2004-04-26 发布日期:2004-10-15
  • 通讯作者: 张启运 E-mail:qyzh@pku.edu.cn

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

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摘要： 为了获得价廉而方便的制取Fe-Co纳米粉体的方法,在pH～3, 40 ℃条件下用铝粉还原FeSO4•(NH4)2SO4和CoSO4•(NH4)2SO4的混合溶液,制得了平均粒径为15 nm的Fe-Co固溶体粉体.用XRD鉴定了合金的物相和粒度,ICP方法分析了合金的成份.实验表明,固溶体的成份可以通过改变溶液中Fe2＋和Co2＋的比例而得以调整.

关键词: Fe-Co合金, 固溶体, 纳米粉体

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