Effect of the Applied Current Density and Deposition Time on Electro-Codeposition Processof Cobalt Matrix Reinforced with Nano-CeO2

Archives of Metallurgy and Materials

article

N. Simionescu-Bogatu¹  L. Benea¹ 

[1] Dunarea de Jos University of Galati, Faculty of Engineering, Competences Centre: Interfaces-Tribocorrosion-Electrochemical Systems

关键词: Electrochemical deposition;    Cobalt matrix;    CeO2 nanoparticles;    Current density;    Electrolysis time;   

DOI  :  10.24425/amm.2022.137798

学科分类：物理（综合）

来源: Akademia Gorniczo-Hutnicza im. Stanislawa Staszica / University of Mining and Metallurgy

【 摘 要 】

This research paper aims to study the influence of some of the main parameters applied to the electrodeposition process onthe nanocomposite layers obtained by strengthening the cobalt matrix with cerium oxide nanoparticles. Thus, the current efficiency(process efficiency) and the degree of inclusion of cerium oxide nanoparticles into cobalt matrix are analyzed according to thecurrent density, the concentration of nanoparticles dispersed in the deposition electrolyte and time of the process. The choice ofthe optimal parameters imposed on the electrodeposition process lead to the improvement of the quality of the obtained layers, tothe reduction of production costs and last but not least to the improvement of corrosion and tribocorrosion resistance of the material. The obtained results show an increase of current efficiency in the process of the deposited layers with the increase of time andcurrent density applied. There is also a slight increasing in the current efficiency of the obtained layers with the increase of theconcentration of nanoparticles dispersed in the deposition electrolyte. The increase of the current density, time and the concentrationof nanoparticles also have an effect on the degree of embedded CeO2 nanoparticles into cobalt matrix for the studied nanocompositelayers. The degree of inclusion of nanoparticles decreases for the same studied system with the increasing of the current density.

【 授权许可】

CC BY-NC