Current Densities Increment Effect during Electrodeposition on Thickness, Surface Morphology, Corrosion, and Hardness
Ahmad Lubi1*, Rani Anggrainy1, Ferry Budhi Susetyo1, Danar Hari Krisyono1, Reza Febriano Armas1, Muhammad Fatihuddin1, Muhammad Thoriqi Alfi1, Putri Nurhaliza1, Cahaya Rosyidan2, Basori3

1 Department of Mechanical Engineering, Universitas Negeri Jakarta, Jakarta, Indonesia
2 Department of Petroleum Engineering, Universitas Trisakti, Jakarta, Indonesia
3 Department of Mechanical Engineering, Universitas Nasional, Jakarta, Indonesia

Abstract

This study aims to investigate various current density effects on thickness, morphology, corrosion, and hardness during electroplating. A scanning electron microscope, a potentiostat, and a Vickers hardness apparatus were used to study surface morphology, electrochemical behaviour, and average hardness, respectively. The deposition rate was also measured as supplementary data. Increased current densities lead to an increased deposition rate, film thickness, and mean grain size of Cu films. It is clearly seen that the sample was made from the highest current density, leading to the resulting lowest corrosion rate, probably due to the largest grain size. Moreover, increasing the current density increases the Cu films^ thickness- therefore, the hardness of the Cu films is linearly proportional to the current density. The Cu-3 sample has higher hardness and better corrosion resistance due to having the highest thickness and a broader grain size.

Keywords: thickness, morphology, corrosion, hardness

Topic: Material Physics