Document Type : Original Article
Authors
1
Departmen of Mechanical Engineering, Engineering Faculty, Universitas Negeri Jakarta, Jakarta, Indonesia.
2
Department of Mechanical Engineering, Engineering Faculty, Universitas Negeri Jakarta, Jakarta, Indonesia
3
PROUDTEK Lab, Department of Geoscience, Faculty of Mathematic and Natural Science, Universitas Indonesia, Indonesia
4
Research Center for Metallurgy - National Research and Innovation Agency, Serpong, Indonesia.
5
Research Center for Nuclear Material and Radioactive Waste Technology-National Research and Innovation Agency
6
Department of Petroleum Engineering, Faculty of Earth and Energy Technology, Universitas Trisakti, Jakarta, Indonesia
Abstract
Nickel (Ni) is an interesting candidate for corrosion protection of copper (Cu) due to its present passive area. Ni films with larger passive areas have better corrosion protection than those with smaller ones. In the present research, Ni films were produced over Cu. A barreling apparatus was employed to support produce the films in the sulphate solution. Various spinning speeds (0, 50, and 100 rpm) were used on the barrel while it was being processed. Several investigations were conducted, such as deposition rate, current efficiency, surface morphology, phase, film thickness, crystallographic orientation, and electrochemical properties. Increased spinning speed results in a decrease in the deposition rate, current efficiency, grain size, thickness, crystallite size, and exchange current density. Compared to a higher spinning speed, the decrease in spinning speed causes an increase in the oxygen content, surface roughness, and micro-strain. The higher speed of the barrel apparatus results in a lower corrosion rate Ni film of 0.147 mmpy. Moreover, the lower speed of the barrel apparatus results in a higher exchange current density Ni film of 0.997 A/cm².
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