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Control of iron nitride formation by a high magnetic field

Published online by Cambridge University Press:  31 January 2011

W.P. Tong ,
H. Zhang ,
J. Sun ,
L. Zuo ,
J.C. He  and
J. Lu
W.P. Tong*
Affiliation:
Key Laboratory of Electromagnetic Processing of Materials, Ministry of Education, Northeastern University, Shenyang 110004, China
H. Zhang
Affiliation:
Key Laboratory of Electromagnetic Processing of Materials, Ministry of Education, Northeastern University, Shenyang 110004, China
J. Sun
Affiliation:
Key Laboratory of Electromagnetic Processing of Materials, Ministry of Education, Northeastern University, Shenyang 110004, China
L. Zuo
Affiliation:
Key Laboratory of Electromagnetic Processing of Materials, Ministry of Education, Northeastern University, Shenyang 110004, China
J.C. He
Affiliation:
Key Laboratory of Electromagnetic Processing of Materials, Ministry of Education, Northeastern University, Shenyang 110004, China
J. Lu
Affiliation:
Department of Mechanical Engineering, the Hong Kong Polytechnic University, Hong Kong, China
*
a)Address all correspondence to this author. e-mail: wptong@mail.neu.edu.cn
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Abstract

The influence of high magnetic field on nitriding behavior was investigated in a mixture of NH3 and H2. It was found that high magnetic field could shift the equilibrium of nitriding reaction; this proved that the critical nitrogen potential to form γ′-Fe4N and ε-Fe3N phase was evidently enhanced compared with conventional nitriding. This research provides a new approach for a selective nitriding process.

Keywords

DiffusionMagneticNitride
Type
Materials Communications
Information
Journal of Materials Research , Volume 25 , Issue 11 , November 2010 , pp. 2082 - 2085
Copyright
Copyright © Materials Research Society 2010

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References

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