NickelMaghrebV1, Main, Exploration, bibRecord, 000516

Effect of natural and magnetic convections on the structure of electrodeposited zinc-nickel alloy

Identifieur interne : 000516 ( Main/Exploration ); précédent : 000515; suivant : 000517

Effect of natural and magnetic convections on the structure of electrodeposited zinc-nickel alloy

Auteurs : A. Levesque [France] ; S. Chouchane [Algérie] ; J. Douglade [France] ; R. Rehamnia [Algérie] ; J.-P. Chopart [France]

Source :

Applied surface science [ 0169-4332 ] ; 2009.

RBID : Pascal:09-0473600

Descripteurs français

Pascal (Inist)
- Convection naturelle, Métal transition, Zinc, Effet champ magnétique, Croissance film, Dépôt électrolytique, Diffraction RX, Nickel alliage, Zn, Ni.
Wicri :
- topic : Zinc.

English descriptors

KwdEn :
- Electrodeposition, Film growth, Magnetic field effects, Natural convection, Nickel alloys, Transition elements, XRD, Zinc.

Abstract

The effects of a magnetic field applied in a direction parallel or perpendicular to the cathode substrate plane, during electrodeposition process of Zn-Ni alloy have been investigated by means of chronoamperometric measurements, X-ray diffraction and EDX analysis. The modification of crystal orientation of the alloy by the superimposition of a high magnetic field is discussed for alloys with a content of nickel range 6-13 at%. Whatever the phase composition obtained without magnetic field, either γ-Ni₅Zn₂₁ or a mixture of the γ and zinc phases, which depends on the concentration of Ni²⁺ in the electrolyte bath, the preferential orientation (101) of the zinc phase is always favoured with perpendicular and parallel magnetic field. There is no saturation of this effect with amplitude of B up to 8 T. A study of different geometric configurations of the cathode, which induce more or less natural convection, consolidates these results. The structural modifications of Zn-Ni alloy electrodeposits are thus probably due to a magnetohydrodynamic effect. An additional phenomenon is observed in presence of a perpendicular applied magnetic field since the (3 3 0) preferential orientation of the γ-Ni₅Zn₂₁ disappears with high values of B.

Affiliations:

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Le document en format XML

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<front><div type="abstract" xml:lang="en">The effects of a magnetic field applied in a direction parallel or perpendicular to the cathode substrate plane, during electrodeposition process of Zn-Ni alloy have been investigated by means of chronoamperometric measurements, X-ray diffraction and EDX analysis. The modification of crystal orientation of the alloy by the superimposition of a high magnetic field is discussed for alloys with a content of nickel range 6-13 at%. Whatever the phase composition obtained without magnetic field, either γ-Ni<sub>5</sub>
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Effect of natural and magnetic convections on the structure of electrodeposited zinc-nickel alloy

Effect of natural and magnetic convections on the structure of electrodeposited zinc-nickel alloy

Source :

Descripteurs français

English descriptors

Abstract

Links toward previous steps (curation, corpus...)

Le document en format XML

Pour manipuler ce document sous Unix (Dilib)

Pour mettre un lien sur cette page dans le réseau Wicri