Effect of current density on the microstructure and morphology of the electrodeposited nickel coatings

Abstract

The aim of this research work was to study the effect of deposition current density on microstructure and surface morphology of electrodeposited nickel coatings. For this purpose, nickel deposits have been synthesized by direct current from watts bath without additive, to limit the incorporation of pollutants resulting from surface adsorption or electroactivity of these compounds. Nickel deposits have been investigated by Scanning electron microscopy and X-ray diffraction. Cyclic voltammetry was also used to gain information on the general behavior of the deposition. The optimum conditions of deposition were established and the influence of current density on the grain size, surface morphology, and crystal orientation was determined.

An Experimental Study of Fabrication of Cellulose Nano-Fiber Composited Ni Film by Electroplating

“…1. The HV of the electrodeposited Ni film was 291 HV, which was almost the same as the value reported in previous study, 12) while the addition of CNF improved the HV by about 30% to 402 HV. When both CNF and SDS were added, the hardness was 426 HV, which showed almost no change compared with that of Ni-CNF composite plating film.…”

“…In addition, HV of plated Ni-CNF film was at least 300 HV which was almost reported HV value of electrodeposited Ni plated under the conditions similar to those in this study. 12) 3. Results and Discussions…”