2011
DOI: 10.1007/s10800-011-0263-6
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Study of the effect of new brightener on Zn–Ni alloy electrodeposition from acid sulphate bath

Abstract: The electrodeposition of Zn-Ni alloy from acid sulphate bath was carried out in presence of a brightener, such as condensation product of vanillin and serine (VS). The cyclic voltammetry and chronoamperometry techniques were used to study the nucleation mechanism process, while polarization and electrochemical impedance spectroscopic (EIS) techniques for corrosion studies. The model of Scharifker and Hills was used to analyze the current transients and it revealed that Zn-Ni electrocrystallization process in p… Show more

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Cited by 19 publications
(12 citation statements)
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“…Basavana et al [24,25] investigated the electrodeposition and nucleation process of Zn-Ni alloys from chloride and sulfate baths in the presence and absence of some brighteners such as the condensation products of vanillin, serine and hexamine. Their results showed that the Zn-Ni electro-crystallization process was governed by the deposition potential and type of brighteners.…”
Section: Introductionmentioning
confidence: 99%
“…Basavana et al [24,25] investigated the electrodeposition and nucleation process of Zn-Ni alloys from chloride and sulfate baths in the presence and absence of some brighteners such as the condensation products of vanillin, serine and hexamine. Their results showed that the Zn-Ni electro-crystallization process was governed by the deposition potential and type of brighteners.…”
Section: Introductionmentioning
confidence: 99%
“…The second (A 2 ) and the third (A 3 ) anodic peaks at potentials -0.76 V and -0.54 V respectively, correspond to dissolution of zinc from δ-phase and γ-phase respectively. The fourth anodic peak (A 4 ) at nobler potential (-0.27V) corresponds to the dissolution of nickel from ,  and  phases [3,9,15]. Thus, the voltammetric response gives information regarding the characteristics of the components of Zn-Ni alloy and the structure of deposited phases.…”
Section: Voltammetric Responsementioning
confidence: 99%
“…As elucidated above, the amount of nickel in the deposit is much lower than in the plating bath solution. Also, the concentration of nickel ions near the cathode surface should be maintained at a constant value during the entire electroplating process [9]. The nucleation process of Zn-Ni deposit is always associated with release of hydrogen which is seen from equation (8).…”
Section: Chronoamperometric Analysismentioning
confidence: 99%
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“…Additives are extensively used in plating baths because of their low toxicity, easy handling, small required amounts, and easier effluent treatment after degradation [3]. Organic molecules adsorbed onto the cathode surface can affect the rate of charge-transfer reactions and the mechanism of electrocrystallization [4]. Hence, the adsorption of these organic molecules at the metal-solution interface is of significant interest in surface science and can markedly change the corrosion resistance properties of metals [5].…”
Section: Introductionmentioning
confidence: 99%