TY - JOUR
T1 - Diffusion of carbon and titanium in γ -iron in a magnetic field and a magnetic field gradient
AU - Nakamichi, S.
AU - Tsurekawa, S.
AU - Morizono, Y.
AU - Watanabe, T.
AU - Nishida, M.
AU - Chiba, A.
N1 - Funding Information:
The authors would like to express their hearty thanks Mr. T. Tsurudome (Sumitomo Heavy Industries Ltd.) for supplying the magnetic field gradient data shown in Fig. 2, Mr. T. Matsuzaki for his help in the experimental work and Dr. K. Kawahara for useful discussion. This work was supported by the Grant-in-Aid for Basic Research (A) (Grant No.15201015) from the Ministry of Education, Science, Sports and Culture of Japan and ISIJ (The Iron and Steel Institute of Japan) Research Promotion Grant. Their supports are very much appreciated.
PY - 2005/6
Y1 - 2005/6
N2 - 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.
AB - 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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U2 - 10.1007/s10853-005-2683-3
DO - 10.1007/s10853-005-2683-3
M3 - Article
AN - SCOPUS:20544469012
SN - 0022-2461
VL - 40
SP - 3191
EP - 3198
JO - Journal of Materials Science
JF - Journal of Materials Science
IS - 12
ER -