Impact of Cathodic Potential on the Growth Mechanisms and Morphology of Ni-P Alloys Using Electrodeposition Technique

Phosphorus nickel alloy, intended for anticorrosion coating, was prepared and deposited at room temperature on copper substrate by chronoamperometry technique in a sulphate bath. The effect of potential on the chemical composition, nucleation and growth, the structure and surface morphology during the electrodeposition of this alloy was presented in this work. X-ray microanalysis showed that the content of phosphorus in the prepared alloys decreases with increasing cathodic potential. Chronoamperograms analysis indicated that the nucleation process is instantaneous and of three-dimensional (3D) growth and is controlled by kinetics. X-ray diffraction analysis revealed an amorphous structure while SEM images showed a smooth appearance with pore presence.

Automated summary

This study investigated the electrodeposition process of phosphorus nickel alloy prepared and deposited on a copper substrate at room temperature in a sulphate bath using chronoamperometry technique. X-ray microanalysis and chronoamperograms analysis revealed a decrease in phosphorus content with increasing cathodic potential, and the nucleation process was found to be instantaneous and controlled by kinetics. X-ray diffraction analysis showed an amorphous structure, while SEM images displayed a smooth appearance with the presence of pores.