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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: [email protected]
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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

REFERENCES

1.Bell, T.: Source Book on Nitriding (ASM, Metals Park, OH 1977)266Google Scholar
2.Tong, W.P., Tao, N.R., Wang, Z.B., Lu, J., Lu, K.: Nitriding iron at lower temperatures. Science 299, 686 (2003)CrossRefGoogle ScholarPubMed
3.Somers, M.A.J., Mittemeijer, E.J.: Layer-growth kinetics on gaseous nitriding of pure iron: Evaluation of diffusion coefficients for nitrogen in iron nitrides. Metall. Mater. Trans. A 26, 57 (1995)CrossRefGoogle Scholar
4.Ferkel, H., Glatzer, M., Estrin, Y., Valiev, R.Z., Blawert, C., Mordike, B.L.: RF plasma nitriding of severely deformed iron-based alloys. Mater. Sci. Eng., A 348, 100 (2003)CrossRefGoogle Scholar
5.Lehrer, E.: On the iron-hydrogen-ammonia equilibrium. Zeitschrift für Elektrochemie 36, 383 (1930)Google Scholar
6.Kooi, B.J., Somers, M.A.J., Mittemeijer, E.J.: An evaluation of the Fe–N phase diagram considering long-range order of N atoms in γ′-Fe4N1–x and ε-Fe2N1–z. Metall. Mater. Trans. A 27, 1063 (1996)CrossRefGoogle Scholar
7.Tong, W.P., Tao, N.R., Wang, Z.B., Zhang, H.W., Lu, J., Lu, K.: The formation of ε-Fe3N phase in a nanocrystalline Fe. Scr. Mater. 50, 647 (2004)CrossRefGoogle Scholar
8.Bell, T., Birch, B.J., Korotchenko, V., Evans, S.P.: Controlled nitriding in ammonia-hydrogen mixtures, Heat Treatment '73: Book No. 163 (The Metals Society, London, UK 1973)51Google Scholar
9.Sun, Y., Bell, T.: Computer prediction of threshold nitriding potential curves. Heat Treat. Met. 24, 43 (1997)Google Scholar
10.Joo, H.D., Kim, S.U., Shin, N.S., Koo, Y.M.: An effect of high magnetic field on phase transformation in Fe–C system. Mater. Lett. 43, 225 (2000)CrossRefGoogle Scholar
11.Jaramillo, R.A., Babu, S.S., Ludtka, G.M., Kisner, R.A., Wilgen, J.B., Mackiewicz-Ludtka, G., Nicholson, D.M.: Effect of 30 Tesla magnetic field on transformations in a novel bainitic steel. Scr. Mater. 52, 461 (2004)CrossRefGoogle Scholar
12.Zhang, Y.D., Gey, N., He, C.S., Zhao, X., Zuo, L., Esling, C.: High temperature tempering behaviors in a structural steel under high magnetic field. Acta Mater. 52, 3467 (2004)CrossRefGoogle Scholar
13.Hillert, M., Jarl, M.: A thermodynamic analysis of the iron-nitrogen system. Metall. Trans. A 6, 553 (1975)CrossRefGoogle Scholar
14.Guggenheim, E.A.: Thermodynamics 6th ed (North Holland, Amsterdam, The Netherlands 1977)Google Scholar
15.Cyrot, M., Décorps, M., Dieny, B.: Magnétisme (Presses Universitaires de Grenoble, Grenoble, France 1999)Google Scholar
16.Crangle, J.: The Magnetic Properties of Solids (Edward Arnold, London, UK 1977)Google Scholar
17.Leineweber, A., Jacobs, H., Huning, F., Lueken, H., Schilder, H., Kockelmann, W.: Fe3N: Magnetic structure, magnetization and temperature dependent disorder of nitrogen. J. Alloys Compd. 288, 79 (1999)CrossRefGoogle Scholar
18.Chen, S.K., Jin, S., Kammlott, G.W., Tiefel, T.H., Johnson, D.W. Jr., Gyorgy, E.M.: Synthesis and magnetic properties of Fe4N and (Fe, Ni)4N sheets. J. Magn. Magn. Mater. 110, 65 (1992)CrossRefGoogle Scholar
19.Zhang, Y.D., Zhao, X., Bozzolo, N., He, C.S., Zuo, L., Esling, C.: Low temperature tempering of a medium carbon steel in high magnetic field. ISIJ Int. 45, 913 (2005)CrossRefGoogle Scholar
20.Xie, W.H., Xue, D.S., Li, F.S.: Local coordination influence on the magnetic properties of iron nitride. J. Phys. Condens. Matter 12, 9061 (2000)CrossRefGoogle Scholar
21.Faraoun, H.I., Zhang, Y.D., Esling, C., Aourag, H.: Crystalline, electronic, and magnetic structures of θ-Fe3C, χ-Fe5C2, and η-Fe2C from first principle calculation. J. Appl. Phys. 99, 093508 (2006)CrossRefGoogle Scholar