A Model Describing the Process of the Electrodeposition of Zinc Loose Deposits in Pulsed Current Modes

A phenomenological model describing the change in the structural characteristics of loose zinc deposits obtained in pulsed current modes is presented. Comparison of experimental data on the structural properties of deposits with the results of model calculations indicates the adequacy of the model....

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Bibliographic Details
Published in:Russian journal of electrochemistry 2023-07, Vol.59 (7), p.501-511
Main Authors: Nikitin, V. S., Ostanina, T. N., Rudoy, V. M., Ostanin, N. I.
Format: Article
Language:English
Subjects:
Adequacy
Chemistry
Chemistry and Materials Science
Deposits
Electrochemistry
Homogeneous structure
Physical Chemistry
Pulsed current
Thickness
Zinc
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Summary:A phenomenological model describing the change in the structural characteristics of loose zinc deposits obtained in pulsed current modes is presented. Comparison of experimental data on the structural properties of deposits with the results of model calculations indicates the adequacy of the model. To describe the features of the dendritic deposit growth and to determine the duration of the homogeneous structure formation in pulsed modes, the concept of critical thickness is introduced, at which a sharp change in the loose deposit density occurs. The dependence of the zinc deposit critical thickness on the pulse duty ratio under pulsed current modes is determined. The increasing of the pulse duty ratio leads to denser deposits with rounded dendrite shapes and fewer growth points, as compared with the deposit obtained in galvanostatic mode.
ISSN:1023-1935
1608-3342
DOI:10.1134/S1023193523070066