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论文类型：期刊论文

发表时间：2009-12-01

发表刊物：2nd International Conference on Nanoscale Materials and Engineering

收录刊物：SCIE、EI、CPCI-S、PubMed、Scopus

卷号：9

期号：12

页面范围：7383-7387

ISSN号：1533-4880

关键字：Nanoparticles Precursor; Nitridation; Iron-Nitrides

摘要：Nitridation of Fe nanoparticle precursor was performed in a NH3 atmosphere at the temperatures of 473 K and 673 K for one hour. Fe nanoparticles precursor had a typical spherical shape with iron oxides shell and alpha-Fe core, which was obtained by an arc-discharge method. Up to date, the nitriding temperature of 473 K in present work was the lowest by thermal ammonolysis method because of the characteristics of the nano-sized particles. The resultant product after nitridation was a mixture of iron-nitrides (gamma'-Fe4N and epsilon-Fe3N) nanoparticles with homogeneous dispersion. The nitriding mechanism, oxidizing behaviors and magnetic properties of iron-nitride nanoparticles were measured and discussed.