Last modified: 2018-07-30
Abstract
In this work, electrodeposited Ni-Zn alloy was studied using cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS) methods from aqueous solutions with different molar ratios of Ni/ Zn and different cathodic applied potentials. The morphological and structural characterizations of the electrodeposited films were performed by scanning electron microscopy, EDX and DRX analysis. The results showed an anomaly during the as-deposition process [1], three phases obtained of as-deposited Ni-Zn alloy ƞ, γ and α [2]. The Ni percentage in the obtained alloys increase with molar ratio of Ni/ Zn (until 18.80 % of alloy at molar ratio equal 10) and when the cathodic potentials shifted to more negatives values. The surface of the all coatings is spherical nodular, and compact without cracks.