Electrochemical corrosion behavior in NaCl medium of zinc–nickel alloys electrodeposited under applied magnetic field

Chouchane, S.; Levesque, Alexandra; Żabiński, Piotr; Rehamnia, R.; Chopart, Jean‐Paul

doi:10.1016/j.jallcom.2010.07.099

Cited by 35 publications

(16 citation statements)

References 38 publications

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“…(13) and (15). The result is: (ρ/χ) 1 = 2.7 × 10 5 g/cm 3 . The ratio (ρ/χ) 2 is calculated at the quasi-stationary stage of formation of the regions with high concentration of electrochemical reaction products using the Eq.…”

Section: Resultsmentioning

confidence: 94%

“…The steel ferromagnetic ball (1) was fixed on the non-conductive, non-magnetic and chemically inert holder (2) in the center of the glass cell (3). The solution of copper sulfate (4) with the concentration of copper ions Cu +2 C Cu = 0.2 М or the solution of nitric acid was poured into the glass cell.…”

Section: Experimental Researchmentioning

confidence: 99%

“…Interest in the study of magnetic field effects on electrochemical systems is relating to the ability to influence on the mass transfer near an electrode surface that allows to control the properties of the surface of metals at electrode position and electro dissolution [1][2][3][4], and to control the rate of electrochemical reactions [5][6][7][8][9][10]. The effect of magneto hydrodynamic stirring of the electrolyte under the action of the Lorentz force in a magnetic field by passing an electric current through the electrolyte [11][12][13][14][15] is the major cause of a significant effect of a magnetic field in the course of electrochemical transformations.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Phase Separation of an Electrolyte during Etching and Sedimentation of Metals on a Surface of a Ferromagnetic Metal Ball in an External Magnetic Field

Yu.I.¹,

O.Yu.²,

A.A.³

et al. 2015

JMSE-A

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The influence of the Earth gravitation on the shape of the interface between the two quasi-stationary phases in anelectrolyte with different magnetic susceptibilities was observed experimentally during etching and deposition of metals on a steel ball in an external magnetic field, applied parallel to the field of gravity. The shape of this interface in an electrolyte is described theoretically on the basis of the equation of the balance of osmotic, magnetic and hydrostatic pressures in the Earth's gravity.

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Section: Resultsmentioning

confidence: 94%

Section: Experimental Researchmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Phase Separation of an Electrolyte during Etching and Sedimentation of Metals on a Surface of a Ferromagnetic Metal Ball in an External Magnetic Field

Yu.I.¹,

O.Yu.²,

A.A.³

et al. 2015

JMSE-A

View full text Add to dashboard Cite

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“…Numerous reports have shown FL produced by the charges moving under the applied magnetic field induces an electrolyte convection [43][44][45][46][47] . It is generally accepted that the enhancement of electrochemical reactions can be attributed to mass transport which is enhanced by FL [43][44][45][46][47][48][49][50] . However, the direction of the imposed FL plays an important role to determine the efficiency of the reaction to be increased or decreased.…”

Section: Effect Of Vertical Lorentz Force On the Movement Of The Bubblesmentioning

confidence: 99%

The Effect of Magnetic Field on the Dynamics of Gas Bubbles in Water Electrolysis

Chen

2021

Preprint

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In this work, the movement of the gas bubbles evolved from the platinum electrodes in the influence of various magnetic field configurations are experimentally investigated. The oxygen and hydrogen bubbles respectively evolve from the surface of anode and cathode have distinctive behaviors in the presence of magnetic fields due to their paramagnetic and diamagnetic characteristics. The magnetic field perpendicular to the surface of the horizontal electrode induces the revolution of the bubbles. The opposite revolution direction between the oxygen and hydrogen bubbles cause the swirling of the flow and spread out the bubbles between the electrode which enhances the conductivity and electrolysis effectiveness. On the other hand, the vertical electrodes in the influence of a parallel magnetic field induce horizontal Lorentz force which effectively spells out the bubbles and increases the conductivity and electrolysis effectiveness as well. However, when the layouts of the electrode and magnetic field result in upward or downward Lorentz forces which competes with the buoyancy force, the sluggish flow in the duct would hinder the movement of the bubbles and decrease the conductivity and charging performance. This phenomenon affects the corresponding natural convection and mass transport as well. These results propose the optimal layout of the electrode and magnetic field which is useful to enhance the conductivity or the effectiveness in water electrolysis.

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“…In order to further improve the corrosion resistance of Zn-Ni coatings, different strategies can be applied such as coating thickening [11], microsctructuring [3], Ni preplating [15,28], or modification of the Zn-Ni electrodeposition baths composition [29,30,31]. It seems that the best protection was achieved by post-plating passivation treatments (conversion coatings), often containing Cr, applied on a single γ-phase [17,[32][33][34].…”

Section: Introductionmentioning

confidence: 99%

Effect of Cr(III) passivation layer on surface modifications of zinc-nickel coatings in chloride solutions

Kozaderov

Światowska

Dragoé

et al. 2021

J Solid State Electrochem

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Surface chemical and morphological modifications of as-plated and Cr(III)-passivated monophasic zinc-nickel coatings induced by corrosion in chloride solutions are demonstrated. The passivated samples showed slower anodic dissolution, less significant dealloying, smaller surface dezincification and lower coating cracking, as demonstrated by Scanning Electron Microscopy and Energy Dispersive X-ray Spectroscopy (SEM-EDX) of the surface and inductively coupled plasma atomic emission spectroscopy solution analysis. Surface characterisation by X-ray photoelectron spectroscopy (XPS), Raman spectroscopy and SEM-EDS indicated simonkolleite as the main corrosion product for both, as-plated and Cr(III)-passivated coatings. In contrast, only for as-plated coating, which experienced higher cracking, new Ni containing phases (metallic Ni and NiO) were evidenced. The phase transition via selective dissolution of zinc is supposed to increase the concentration of the structural defects and could explain cracking in the non-passivated Zn-Ni coating.

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Electrochemical corrosion behavior in NaCl medium of zinc–nickel alloys electrodeposited under applied magnetic field

Cited by 35 publications

References 38 publications

Phase Separation of an Electrolyte during Etching and Sedimentation of Metals on a Surface of a Ferromagnetic Metal Ball in an External Magnetic Field

Phase Separation of an Electrolyte during Etching and Sedimentation of Metals on a Surface of a Ferromagnetic Metal Ball in an External Magnetic Field

The Effect of Magnetic Field on the Dynamics of Gas Bubbles in Water Electrolysis

Effect of Cr(III) passivation layer on surface modifications of zinc-nickel coatings in chloride solutions

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