title: Low-temperature nitridation of Fe nanoparticles precursor.
abstract: 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.
authors.affiliation: School of Materials Science and Engineering, Dalian University of Technology, Dalian, Liaoning 116024, PR China.
authors.forename: H
authors.initials: H
authors.lastname: Huang
authors.forename: B
authors.initials: B
authors.lastname: Lu
authors.forename: J P
authors.initials: JP
authors.lastname: Lei
authors.forename: X L
authors.initials: XL
authors.lastname: Dong