Nickel Electroplating On Steel From Acidic Citrate Baths
Ibrahim, Magdy; S.S. Abd El Rehim; S. M. Abd El Wahaab; M.M. Dankeria;
Abstract
Electroplating of nickel onto steel substrates from citrate baths has been investigated under different conditions of
bath composition, current density, pH and temperature. A detailed study has been made of the influence of these
variables on the potentiodynamic cathodic polarization curves, cathodic current efficiency and throwing power,
as well as the throwing index of these baths. The optimum conditions for producing sound and satisfactory nickel
deposits are: NiSO4 · 6H2O 100 g/L, trisodium citrate 25 g/L and citric acid 20 g/L at pH 5.0, with i = 2 A/dm2 and at 25 °C. Moreover, the effect of sinusoidal a.c. superimposed on d.c. on electroplating of nickel from the optimum citrate bath has been investigated. The surface morphology of the as-plated nickel was investigated by
using scanning electron microscopy (SEM) while the structure was studied by using X-ray diffraction analysis
and anodic stripping voltammetry (ASV) techniques.
bath composition, current density, pH and temperature. A detailed study has been made of the influence of these
variables on the potentiodynamic cathodic polarization curves, cathodic current efficiency and throwing power,
as well as the throwing index of these baths. The optimum conditions for producing sound and satisfactory nickel
deposits are: NiSO4 · 6H2O 100 g/L, trisodium citrate 25 g/L and citric acid 20 g/L at pH 5.0, with i = 2 A/dm2 and at 25 °C. Moreover, the effect of sinusoidal a.c. superimposed on d.c. on electroplating of nickel from the optimum citrate bath has been investigated. The surface morphology of the as-plated nickel was investigated by
using scanning electron microscopy (SEM) while the structure was studied by using X-ray diffraction analysis
and anodic stripping voltammetry (ASV) techniques.
Other data
| Title | Nickel Electroplating On Steel From Acidic Citrate Baths | Authors | Ibrahim, Magdy ; S.S. Abd El Rehim ; S. M. Abd El Wahaab ; M.M. Dankeria | Keywords | Ni electrodepostion, ac, SEM, ASV | Issue Date | 1999 | Publisher | AESF Foundation | Journal | PLATING & SURFACE FINISHING |
Attached Files
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| NiCitrate.pdf | 142.92 kB | Adobe PDF | Request a copy |
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