Zinc electrodeposition in the presence of polyethylene glycol 20000

Ballesteros, J.C.; Díaz-Arista, P.; Meas, Y.; Ortega, R.; Trejo, G.

doi:10.1016/j.electacta.2006.10.042

Cited by 205 publications

(135 citation statements)

References 39 publications

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“…This limitation on the Mn deposition at higher currents could be related with a certain inhibitor effect caused by hydrogen liberation, as referred by some authors [27].…”

Section: Electrodeposition Processmentioning

confidence: 99%

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Electrodeposition of Zn-Mn alloys from recycling battery leach solutions in the presence of amines

Brito¹,

Patrício²,

Rodrigues³

et al. 2010

The Sustainable World

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The recovery of metal ions by electrodeposition from solutions resulting from the lixiviation of spent Zn-MnO 2 batteries was studied. It was attempted to optimise the electrodeposition process, the selectivity of ion-separation, the morphologic characteristics, and the anticorrosive and galvanic properties of metallic deposits. The simultaneous deposition of zinc and manganese on different ferrous substrates under various experimental conditions was tested. This allowed us to access the efficiency of the electrodeposition, the morphology and composition of the metallic deposits, as well as their performance as galvanic coating layers. The effect of amine additives, namely, of methylamine and ethylenediamine, on the properties of the coatings was also studied. It was shown that the amines with buffering or passivating effects improve the simultaneous deposition of Mn.

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“…This limitation on the Mn deposition at higher currents could be related with a certain inhibitor effect caused by hydrogen liberation, as referred by some authors [27].…”

Section: Electrodeposition Processmentioning

confidence: 99%

“…Glue and Arabic gum [25] have been used in industrial electrodeposition; however other substances have been studied for the same purpose with satisfactory results. Nonylphenol oxyethylene, polyethylene glycol and derivatives, quaternary amines, and EDTA [26][27][28][29][30][31][32][33] may be referred to as examples.…”

Section: Introductionmentioning

confidence: 99%

Electrodeposition of Zn-Mn alloys from recycling battery leach solutions in the presence of amines

Brito¹,

Patrício²,

Rodrigues³

et al. 2010

The Sustainable World

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“…Adding small amounts of an additive in electrolytic bath improves smoothness and luster of the deposits. Their effect on electroplating is generally known to be due to adsorbtion on the cathode surface and alteration of the activation energy [21] and the rate of charge transfer in the electrochemical reaction, and also due to alteration of the electrocrystallization process [22,23].…”

Section: Introductionmentioning

confidence: 99%

Effect of Borax Pentahydrate Addition to Acid Bath on the Microstructure and Corrosion Resistance of Zn-Co Coating

Karahan

2015

Acta Phys. Pol. A

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In this work, the Zn-Co coatings were synthesized on AISI 4140 steel and aluminum plates by using potentiostatic electrodeposition technique in sulphate-based acidic baths with 0, 20, 40 and 60 g l −1 of borax pentahydrate, as additive. The effect of borax pentahydrate on the microstructure of the samples was observed using scanning electron microscopy and X-ray diffractometer. The deposition process was investigated by cyclic voltammetry. The effect of borax pentahydrate on the corrosion resistance of the samples was studied by potentiodynamic polarization technique. The results have demonstrated, that the addition of borax pentahydrate was in favor of the growth of grains. The morphology of pyramidal islands on the surface was changed to a more flat structure. The results have also demonstrated that the effect of borax pentahydrate was not monotonous. With increasing concentration, the corrosion potential was at minimum and the charge transfer resistance Rt was at maximum for the sample obtained from the bath with 60 g l −1 of borax pentahydate, indicating that this sample showed the best corrosion resistance. It was found that current density first decreased and than increased, due to adsorption of a complex of borax pentahydrate and/or changes in the morphology, however, the initial deposition potential was not affected. The addition of borax pentahydrate to the bath led to formation of the best Zn-Co deposits, composed of coalesced globular fine grains, smaller than ≈2 µm in diameter. In addition, all of the studied Zn-Co deposits consisted of η phases. It is suggested that Zn-Co deposits produced in the bath containing 60 g l −1 of borax pentahydrate probably offer sacrificial protection to the steel substrate.

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“…Generally, to fulfill the coatings requests for a better performance, the metallic-alloy deposition baths are always developed and/or modified to enhance the cathodic current efficiency, the amount of certain metal in the coating, or even to refine the grain sizes and the decorative characteristics of the coatings 8,12 . For this purpose, a complexant agent or a leveling additive can be added to an electrodeposition bath, causing several changes on the reduction mechanism of the ions in the solution and/or in the activation energy of the electrode surface [15][16][17] . For this reason, it is possible to find several works concerning the production of Zn-Co coatings from acidic or alkaline baths, containing additives and/or complexant agents 7,8,10,18 .…”

Section: Introductionmentioning

confidence: 99%