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

页码：1645 / 1651

页数：7

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