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Laser Synthesis of Iron Nitride Nanoparticles from Pyrolysis of Fe(CO)5-NH3 System

Published online by Cambridge University Press:  15 February 2011

X. Q. Zhao ,
Y. Liang ,
F. Zheng ,
Z. Q. Hu ,
G. B. Zhang  and
K. C. Bai
X. Q. Zhao
Affiliation:
Dept. of RS Crystallite and Laser Processing, Inst. of Metal Research, Academia Sinica, Shenyang 110015, PR.China.
Y. Liang
Affiliation:
Dept. of RS Crystallite and Laser Processing, Inst. of Metal Research, Academia Sinica, Shenyang 110015, PR.China.
F. Zheng
Affiliation:
Dept. of RS Crystallite and Laser Processing, Inst. of Metal Research, Academia Sinica, Shenyang 110015, PR.China.
Z. Q. Hu
Affiliation:
Dept. of RS Crystallite and Laser Processing, Inst. of Metal Research, Academia Sinica, Shenyang 110015, PR.China.
G. B. Zhang
Affiliation:
The Northeastern University, Shenyang 110015, PR.China.
K. C. Bai
Affiliation:
The Northeastern University, Shenyang 110015, PR.China.
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Abstract

By vapor-phase pyrolysis of Fe(CO) 5 and NH3 induced by CW CO2 laser, γ'-Fe4N and ε- Fe3N nanoparticles(≤35nm) were prepared in Ar and N2 atmospheres. In Ar, γ'-Fe4N accompanied by a little α-Fe was formed at low temperatures below 650°C, while higher temperatures favored the formation of γ-Fe. In N2 atmospheres, a mixture of Fe4N and Fe3N nanoparticles were obtained at high temperatures. In addition, the influences of synthesis parameters on the structure, morphology and magnetic properties of the nanoparticles were discussed.

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Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 368: Symposium T – Synthesis and Properties of Advanced Catalytic Materials , 1994 , 39
Copyright
Copyright © Materials Research Society 1995

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References

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