Effect of high magnetic field on intermetallic phase growth in Ni–Al diffusion couples

Ren, Xueli; Chen, Guoqing; Zhou, Wenlong; Wu, Chengwei; Zhang, Junshan

doi:10.1016/j.jallcom.2008.05.010

Cited by 48 publications

(9 citation statements)

References 25 publications

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“…Therefore, the angle between DD and MFD (whether 0° or 180°) does not affect the experimental results. A similar conclusion to the one obtained here was obtained by studies that investigated the effect of a high magnetic field on the diffusion process [ 5 , 6 , 7 , 10 , 11 , 12 , 13 , 14 ]. They suggested that atomic diffusivity is affected by the frequency factor rather than the activation energy.…”

Section: Discussionsupporting

confidence: 90%

“…Recently, research on this subject has been focused on the effect of high magnetic fields on the atomic diffusion of diffusion couples in the paramagnetic/paramagnetic states (Al/Mg [ 5 , 6 ], Ni/Al [ 7 ], Ti/Ni [ 8 ], and Ti/Fe [ 9 ]) and paramagnetic/diamagnetic states (Al/Al–3% Cu [ 10 ], Cu/Ni [ 11 , 12 ], Fe/Fe–50 wt.% Si [ 13 ], Fe/Fe–20 wt.% Si [ 14 ]). Several studies [ 5 , 7 , 10 , 11 , 13 ] have suggested that a high magnetic field restrains atomic diffusion when the diffusion direction is perpendicular to the magnetic field. Other studies [ 6 , 12 , 14 ] have revealed that a high magnetic field parallel to the diffusion direction promotes the diffusion process.…”

Section: Introductionmentioning

confidence: 99%

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Diffusion in Copper/Cobalt Systems under High Magnetic Fields

2021

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Comprehensive research on a high magnetic field’s effect on diffusion is lacking; hence, this study investigates the effect of the magnetization of such a field on diffusion using a copper/cobalt diffusion couple in the diamagnetic/ferromagnetic states, respectively. The diffusion couple was formed using explosive welding to avoid diffusion during manufacturing. The diffusion couple annealed within a temperature range of 1165 –1265 K under a 0–6-T high magnetic field. The angle between the diffusion and magnetic field directions was set as 0° and then 180°. The penetration profiles of cobalt volume diffusion in the copper and grain-boundary diffusion of copper in cobalt were constructed using an electron probe micro analyzer. The high magnetic field increased the volume diffusivity of cobalt in copper, but had no evident effect on the grain-boundary diffusivity of copper in cobalt, irrespective of the magnetic field direction. An Arrhenius plot of the cobalt volume diffusivity in copper demonstrated that the applied high magnetic field enhanced diffusion by changing the frequency factor rather than the activation energy; this can be attributed to the increased diffusion entropy caused by changing the vacancy concentration, which resulted from the introduction of magnetization under a high magnetic field.

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Section: Discussionsupporting

confidence: 90%

Section: Introductionmentioning

confidence: 99%

Diffusion in Copper/Cobalt Systems under High Magnetic Fields

2021

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“…The layer thickness decreasing is suggested to be related with the retardation of atom diffusion under the magnetic field, which is in well agreement with the above mentioned theory. Generally, such atom diffusion process is via atom-vacancy jump mechanism, in which the diffusion coefficient D could also be expressed as [17,18]:…”

Section: Resultsmentioning

confidence: 99%

Effect of static magnetic field on microstructure and interdiffusion behavior of Fe/Fe–Si alloy diffusion couple

Fan

Zhong

et al. 2015

Journal of Alloys and Compounds

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“…ers occurs sequentially and not simultaneously [5][6][7]. Furthermore, phase formation sequence in these multilayers depends on their average chemical composition, modulation period and processing history [7,[8][9][10][11][12]. The influence of the modulation period has been definitely proven in a recently published detailed kinetic study [13].…”

Section: Introductionmentioning

confidence: 98%