The physical and mechanical model of electrochemical processes of forming copper and electrocorundum micro- and nanocomposite coatings

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Abstract

The article describes a mathematical model and the results of a numerical study of electro- chemical, diffuse and kinetic processes of co-deposition of metallic copper and micro- and nano- particles of electrocorundum on the surface of a metal electrode. A mathematical apparatus for complex physical and chemical mathematical modeling of the processes accompanying the for- mation of nanocomposite coatings from copper sulphate electrolytes is presented, i.e. the elec- trochemical deposition of metallic copper on the cathode surface, physical adsorption of micro- and nanoparticles on the cathode surface and growth of the coating layer. To describe the movement of the electrolyte, the k-ε model based on the averaged Reynolds equations with damping functions according to the Abe – Kondoh – Nagano model (k-ε AKN) was used. The modelling results are compared with the experimental data. The mathematical modeling results of the electrochemical deposition of metallic copper Cu on a rotating cylindrical electrode are presented. The mass transfer of the electroactive electrolyte ions occurs due to three main mechanisms: diffusion, migration and convection. Ion and particle mass transfer is described by the equations of convective diffusion and studied in the entire volume of the electrolytic bath. The cathodic and anodic processes are described on the basis of the tertiary current distribution. The mathematical modeling results of the joint electrochemical deposition of Cu-Al2O3 composite coatings on a rotating cylindrical electrode are presented taking into account the hydrodynamics of the electrolyte flow. The simulation is carried out in the entire volume of the electrochemical cell, and not only within the diffusion layer, which allows taking into account the transfer of elec- trolyte particles and ions by convection and migration. The current numerical study made it pos- sible to investigate in detail the kinetics of these processes and showed good agreement with the experimental results.

Keywords

mathematical modelingelectrochemistryelectrokinetic forcesdiffusionhydrodynamicscomposite coatingsmicro- and nanoparticles.

Bibliography

  1. 1.Raghavendra C.R., Basavarajappa S., Sogalad I. Comparative study on Ni and Ni- \(\alpha\) - Al2O3 nano composite coating on Al6061 substrate material. Materials Today: Proceedings, 2020, Vol.24, pp.975- 982. https://doi.org/10.1016/j.matpr.2020.04.410 Scholar
  2. 2.Raghavendra C.R., Basavarajappa S., Sogalad I. A review on Ni based nano composite coatings. Materials Today: Proceedings, 2021, Vol. 39, pp. 6- 16 https://doi.org/10.1016/j.matpr.2020.04.810 Scholar
  3. 3.Pinate S., Leisner P., Zanella C. Wear resistance and self- lubrication of electrodeposited Ni- SiC:MoS2 mixed particles composite coatings. Surface and Coatings Technology, 2021, Vol.421, https://doi.org/10.1016/j.surfcoat.2021.127400 Scholar
  4. 4.Zhang Y., Zhang J., Wang Z., Liu J. Electrochemical behavior and electro- crystallization mechanism of Cu- Ni/ Nano- Al2O3 coating with a deposition current density dependence. Journal of Alloys and Compounds, 2023, Vol.952. https://doi.org/10.1016/j.jallcom.2023.169988 Scholar
  5. 5.Ayoola A., Fayomi O., Popoola A. Anticorrosion properties and thin film composite deposition of Zn- SiC- Cr3C2 coating on mild steel. Defence Technology, 2019, Vol.15, pp. 106- 110. https://doi.org/10.1016/j.dt.2018.04.008 Scholar
  6. 6.Wang Y., Qi Y. Study on Electrodeposition of ZnNiAl2O3 Composite Coating on 40Mn Steel and its Corrosion Behavior in Simulated Concrete Pore Solution. International Journal of Electrochemical Science, 2022, Vol.17. https://doi.org/10.20964/2022.10.46 Scholar
  7. 7.Guglielmi N. Kinetics of the Deposition of Inert Particles from Electrolytic Baths. Journal of The Electrochemical Society, 1972, Vol.119, pp.137- 146. https://doi: 10.1149/1.24043 Scholar
  8. 8.Guo H., Qin Q., Wang A. Mass transport process of solid particles in composite electrodeposition. Electrochem.Soc, 1988, Vol.46, pp.8- 18 Scholar
  9. 9.Fransaer J. Analysis of the Electrolytic Codeposition of Non- Brownian Particles with Metals. Journal of The Electrochemical Society, 1992, Vol.139, pp.413- 420. doi:10.1149/1.2069233 Scholar
  10. 10.Walsh F.C., Ponce de Leon C. A review of the electrodeposition of metal matrix composite coatings by inclusion of particles in a metal layer: an established and diversifying technology. Transactions of the IMF, 2014, Vol.92, pp. 83- 98. doi:10.1179/0020296713Z.000000000161 Scholar
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Article information

Published
4 December 2023
Issue date
4 December 2023
Issue
No. 5 (2023)
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