1. Enhancement of the Kirkendall effect in Cu–Ni diffusion couples induced by high magnetic fields.
- Author
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Liu, Tie, Li, Donggang, Wang, Qiang, Wang, Kai, Xu, Zhifeng, and He, Jicheng
- Subjects
PHYSICS research ,MAGNETIC fields ,KIRKENDALL effect ,DIFFUSION ,MAGNETIC flux ,ELECTROMAGNETIC induction - Abstract
The shift of the Kirkendall marker at the interface of Cu–Ni diffusion couples was examined under the influence of high magnetic fields up to 12 T. The shift distance of the marker increased remarkably with increasing magnetic flux density (B) in the case of the direction of diffusion parallel to B. However, if the direction of the magnetic field was perpendicular to that of diffusion, there was a negligible effect of the magnetic field on diffusion behavior. A calculation of intrinsic diffusivities of both components showed that the interdiffusion rates (∥B) are increased by high magnetic fields. These effects can be attributed to an increase in the chemical potential gradient induced by magnetic free energy in a high magnetic field. [ABSTRACT FROM AUTHOR]
- Published
- 2010
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