Composition-Controlled Fe-Ni Alloy Fine Particles Synthesized by Reduction-Annealing of Polyol-Derived Fe-Ni Hydroxide

被引：5
|
作者：
Fujieda, S. [1 ]
Miyamura, W. [1 ]
Shinoda, K. [1 ]
Suzuki, S. [1 ]
Jeyadevan, B. [2 ]
机构：
[1] Tohoku Univ, Inst Multidisciplinary Res Adv Mat, Sendai, Miyagi 9808577, Japan
[2] Univ Shiga Prefecture, Sch Engn, Hikone 5228533, Japan
来源：
MATERIALS TRANSACTIONS | 2016年 / 57卷 / 09期
关键词：
nanoparticles; layered double hydroxides; polyol; X-ray absorption spectroscopy; MARTENSITIC-TRANSFORMATION; POWDERS; NANOPARTICLES; SIZE; PERMEABILITY; CATALYSTS; XANES;
D O I：
10.2320/matertrans.M2016063
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Fe-Ni hydroxide fine particles with a layered double hydroxide-type structure were precipitated as an intermediate in polyol (ethyleneglycol) solution with Fe compositions ranging between about 10 and 90 at%. Subsequent reduction-annealing of the above polyol-derived particles with 13-56 at% Fe at 673 K resulted in the synthesis of fcc Fe-Ni alloy fine particles with their sizes less than about 50 nm. The lattice constants of fcc Fe-Ni alloy particles were close to those of the bulk fcc Fe-Ni alloy with similar compositions. X-ray absorption spectroscopy measurements suggested that fcc Fe-Ni alloy was formed through simultaneous reduction of Fe and Ni in Fe-Ni hydroxide. Consequently, the reduction-annealing of polyol-derived Fe-Ni hydroxide fine particles is proved to be an effective process for obtaining composition-controlled Fe-Ni alloy fine particles.
引用
收藏
页码：1645 / 1651
页数：7
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