Particle size dependence in low temperature nitridation reaction for Fe16N2
Particle size dependence in low temperature nitridation reaction for Fe16N2
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DOI：
10.1016/j.jallcom.2005.12.134
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发表时间：
2008-01-31
影响因子：
6.2
通讯作者：
Takeda, Takashi
中科院分区：
文献类型：
--
作者：
Kikkawa, Shinichi;Kubota, Kohei;Takeda, Takashi
采用流动氢气对三种粒径的α - fe2o3进行还原，研究了α - fe粉末的低温氮化。最合适的α - fe2o3粉末平均粒径为60 nm。氢还原后的α - fe平均粒径约为120 nm。在130 ~ 170℃的氮化产物中，140℃反应100 h得到的铁磁性Fe16N2产率最高。五羰基铁的热分解也得到了30 nm的单分散α - fe球形颗粒的窄粒度分布。在辛基醚溶剂中，在油酸稳定剂的存在下进行。(C) 2006 Elsevier b.v.版权所有
Low temperature nitridation of alpha-Fe powder was studied by reduction of alpha-Fe2O3 with three particle sizes using flow hydrogen. Most suitable alpha-Fe2O3 powder had an average particle size of 60 nm. After hydrogen reduction, the alpha-Fe showed average particle size of about 120 nm. The yield of ferromagnetic Fe16N2 obtained at 140 degrees C for 100 h was the highest of its nitrided product among the products nitrided in a temperature range of 130-170 degrees C. Thermal decomposition of iron pentacarbonyl was also applied to obtain a narrow particle size distribution of monodispersed alpha-Fe spherical particles of 30 nm. It was performed in the presence of oleic acid stabilizer in octyl ether solvent. (C) 2006 Elsevier B.V All rights reserved.