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Diffusion of carbon and titanium in γ -iron in a magnetic field and a magnetic field gradient

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Abstract

The diffusion coefficients of carbon and titanium in γ -iron were measured in a 6T magnetic field and in magnetic field gradients ranging from 30 to 45 T/m. We have found that the diffusion of carbon in γ -iron is retarded by application of a 6T magnetic field. In contrast with carbon diffusion, no noticeable effect of a magnetic field on the diffusivity of titanium in γ -iron is observed. On the other hand, the diffusion of carbon in γ -iron can be enhanced in a magnetic field gradient when carbon atoms move towards the direction with a higher magnetic field strength. The higher the magnetic field gradient strength becomes, the more the carbon diffusion is enhanced. Nevertheless, a magnetic field gradient causes a decrease in diffusivity of carbon in γ -iron when the opposite magnetic field gradient is applied.

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Authors and Affiliations

  1. Lab. Materials Design and Interface Engineering, Department of Nanomechanics, Graduate School of Engineering, Tohoku University, 980-8579, Japan

    S. Nakamichi & S. Tsurekawa

  2. Department of Mechanical Engineering and Materials Science, Faculty of Engineering, Kumamoto University, 860-8555, Japan

    Y. Morizono

  3. Lab. Materials Design and Interface Engineering, Department of Nanomechanics, Graduate School of Engineering, Tohoku University, 980-8579, Japan

    T. Watanabe

  4. Department of Mechanical Engineering and Materials Science, Faculty of Engineering, Kumamoto University, 860-8555, Japan

    M. Nishida & A. Chiba

Authors
  1. S. Nakamichi
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  2. S. Tsurekawa
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  3. Y. Morizono
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  4. T. Watanabe
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  5. M. Nishida
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  6. A. Chiba
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Correspondence to S. Tsurekawa.

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Nakamichi, S., Tsurekawa, S., Morizono, Y. et al. Diffusion of carbon and titanium in γ -iron in a magnetic field and a magnetic field gradient. J Mater Sci 40, 3191–3198 (2005). https://doi.org/10.1007/s10853-005-2683-3

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  • DOI: https://doi.org/10.1007/s10853-005-2683-3

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