Synthesis process and growth mechanism of γ′-Fe4N nanoparticles by phase-transformation

被引：6
|
作者：
Cao, MS [1 ]
Liu, HT
Chen, YJ
Wang, B
Zhu, J
机构：
[1] Harbin Engn Univ, Dept Mat Sci & Engn, Harbin 150001, Peoples R China
[2] Tsing Hua Univ, Sch Mat Sci & Engn, Beijing 100084, Peoples R China
[3] Harbin Inst Technol, Ctr Composite Mat, Harbin 150001, Peoples R China
来源：
SCIENCE IN CHINA SERIES E-TECHNOLOGICAL SCIENCES | 2003年 / 46卷 / 01期
关键词：
nanoparticles; surface reaction; phase-transformation; iron nitride; gamma '-Fe4N;
D O I：
10.1360/03ye9010
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Multiphase Fe/N nanoparticles were synthesized by means of chemical vapor reaction, the influence of the preparing parameters on the properties of particles was studied carefully during the first nitriding process. The optimum process was determined. Single phase gamma'-Fe4N was prepared by twice-nitriding. Multiphase iron-nitride really transforms gamma'-Fe4N nanoparticle of single-phase and uniform. Moreover, the mechanism of nanoparticle nucleation and growth, including phase-transformation, was revealed. In addition, the mircograph, particle size, physical phases, schemical constituents and magnetic properties before and after phase-transformation were characterized initially.
引用
收藏
页码：104 / 112
页数：9
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