Studies about Electrochemical Plating with Zinc - nickel Alloys - the Influence of Deposition Potential on Stoichiometric Composition

Vasilache, Violeta; Gutt, Gheorghe; Vasilache, Traian

doi:10.37358/rc.08.9.1957

Cited by 9 publications

(10 citation statements)

References 1 publication

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“…The shift in the potential towards more positive values indicates that the NH 4 Cl additive inhibited the deposition of zinc and transformed it into a Zn-Ni alloy film [21]. This observation confirms that the NH 4 Cl additive is an inhibitor for Zn deposition [22]. The obtained results also indicate that the reduction of H + ions is very sensitive to the presence of ammonium chloride in the electrolysis bath.…”

Section: Chronopotentiometric Curvessupporting

confidence: 68%

The electroplating process of zinc–nickel system under perpendicular magnetic field from chloride bath

Benachour

Chouchane

Chopart

2022

Materials Science and Technology

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An investigation of the magnetic flux effect with an intensity of up to 1 T on the electroplating of Zn–Ni alloys was performed, taking into consideration the resistance and configuration of the electrode surface. Significant changes in the potential deposition, composition, and morphology were observed under perpendicular magnetic flux within the presence of NH4Cl. Additionally, the obtained results indicate that the magnetic flux supports the desorption of hydrogen. The chemical composition of the deposited alloys was found to be more affected by the magnetic field in the presence of NH4Cl. In particular, the nickel content increased to 20% under B = 1 T. X-ray patterns revealed a γ-Ni5Zn21 and pure zinc phases. The morphology was also explored and discussed.

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Section: Chronopotentiometric Curvessupporting

confidence: 68%

The electroplating process of zinc–nickel system under perpendicular magnetic field from chloride bath

Benachour

Chouchane

Chopart

2022

Materials Science and Technology

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“…Another fact easy to observe is the stabilization of the current during electrodeposition for the case of use of high working potentials (-1000 mV and -1100 mV respectively, figs. 7,8). This fact could be a logical consequence of masking of the secondar y reactions by the main electrochemical reactions, discharging of Ni 2+ ions, and stabilizing of electrodynamics equilibrium in all the mass of the electrolyte, especially on the electrodes surface.…”

Section: Resultsmentioning

confidence: 99%

Studies about Electrochemical Plating with Zinc - nickel Alloys - the Influence of Deposition Potential on Stoichiometric Composition

Vasilache¹,

Gutt²,

Vasilache³

2008

Rev. Chim.

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The electrochemical deposition of zinc and combinations with elements of the 8th group of the Periodic System (nickel, cobalt, iron) have good properties for anticorrosive protection, compared with pure zinc. For steel pieces, these films delay apparition and formation of white and red iron oxide. We used solutions with different concentrations of zinc chloride, nickel chloride and potassium chloride. To analyze the results we used the optic microscope and the X-ray diffraction.

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“… and which may or may not contain hydroxyl group are adsorbed monovalently in intermediate reactions. Ni and Zn are the metallic deposits of nickel and zinc, respectively [30-32]. Same mechanism takes place in a multilayer coating of different SCCD's to form different layers with different compositions of Zn–Ni alloys.…”

Section: Resultsmentioning

confidence: 99%

Zn–Ni compositionally modulated multilayered alloy coatings for improved corrosion resistance

Bhat¹,

Nagaraj

Priyadarshini

2020

Surface Engineering

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Zinc-Nickel monolayer (single layer) and compositionally modulated multilayer alloy coatings were developed on to mild steel from acidic sulphate bath; and their corrosion performance were studied using potentiodynamic polarization and electrochemical impedance spectroscopy methods. The coating layers were formed galvanostatically by single bath technique, using square current pulses and triangular current pulses. For the best efficiency of the deposits against corrosion, the switched cathode current density and the number of layers were optimized. Under optimized conditions, Zn-Ni multilayer alloy coatings were produced at the current density 3.0/5.0 A dm −2 having 300 layers were ∼65 (square) and ∼48 (triangular) times more corrosion resistant respectively than the single layer alloy coating of the same thickness. Scanning electron microscopy has been employed to investigate, the formation of multilayer alloy coatings as well as the morphology of the surface before and after corrosion studies.

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Studies about Electrochemical Plating with Zinc - nickel Alloys - the Influence of Deposition Potential on Stoichiometric Composition

Cited by 9 publications

References 1 publication

The electroplating process of zinc–nickel system under perpendicular magnetic field from chloride bath

The electroplating process of zinc–nickel system under perpendicular magnetic field from chloride bath

Studies about Electrochemical Plating with Zinc - nickel Alloys - the Influence of Deposition Potential on Stoichiometric Composition

Zn–Ni compositionally modulated multilayered alloy coatings for improved corrosion resistance

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