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Date of Publication:2022-10-10

Journal:大连理工大学学报

Issue:5

Page Number:671-677

ISSN No.:1000-8608

Abstract:The coupling mathematical model of magnetic field, electric field and flow field in the electrodeposition process is established and numerically simulated by using COMSOL. The numerical results are obtained and comparatively analyzed, which are the distribution of the fluid flow field, the electric field distribution characteristics of the bath and the coating thickness variation characteristics in different periods of the plating without magnetic field and in 0.2 T vertical magnetic field. In order to study the effect law of magnetic field on the electric deposition process, electrodeposited nickel experiments are conducted in the conditions of 0, 0.2, 0.4 and 0.8 T vertical magnetic field. The experimental results show that the simulated value of coating thickness variation tendency is close to the experimental value, and the average absolute deviation is 0.443 ��m without magnetic condition and 0.425 ��m in 0.2 T magnetic field. Compared with non-magnetic field, the average thickness of the coating increases by 11% when 0.2 T vertical magnetic field is applied, which is consistent with the simulation results. The experimental results also indicate that the coating grain refinement and surface quality have been improved with the increase of magnetic field strength, and numerical analyses can more accurately reflect the effects of the magnetic field on the electrodeposition process.

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