Role of organic additives on zinc plating

Kavitha, B.; Santhosh, P.; Renukadevi, Murugesan; Kalpana, A.; Piraman, Shakkthivel; Vasudevan, T.

doi:10.1016/j.surfcoat.2006.07.235

Cited by 56 publications

(28 citation statements)

References 2 publications

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“…On an industrial scale the zinc electrodeposition is obtained from alkaline cyanide baths. But due to high toxic nature of cyanide baths, other baths like sulfate, chloride and sulphamate are gaining importance even though they have poor throwing power [1][2][3][4][5][6]. The primary goal of all these baths is to generate quality zinc deposit with good corrosion protection ability to steel.…”

Section: Introductionmentioning

confidence: 99%

Synergistic effect of additives on bright nanocrystalline zinc electrodeposition

et al. 2010

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The influence of additives like cetyltrimethylammonium bromide (CTAB) and Ethyl vanillin (EV) on zinc electrodeposition from acid sulfate bath was systematically investigated by scanning electron microscopy, X-ray diffraction, and voltammetric techniques. The result shows the existence of interaction between CTAB and EV. They exhibited synergistic effect to produce bright nanocrystalline zinc coating on steel surface. The combined effects of these two compounds on deposition overpotential, hydrogen evolution, zinc ion diffusion, and surface coverage were discussed. The morphological and orientational changes occurred in electrodeposit were presented. Also the nucleation mechanism exhibited by zinc during electrodeposition in the presence of additive was examined.

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Section: Introductionmentioning

confidence: 99%

Synergistic effect of additives on bright nanocrystalline zinc electrodeposition

et al. 2010

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“…But experiments show that corrosion resistance ability of electroplating Zn-Ni alloy plating coating after nickel pre-plating is better than direct electroplating Zn-Ni alloy coating, and the corrosion current density of the former is 0.812 times of that for the latter. The corrosion current density and corrosion rate proportional relations [11] , the smaller the corrosion current density, the smaller the corrosion rate. The corrosion current density of electroplating Zn-Ni alloy plating coating after nickel pre-plating is lower than direct electroplating Zn-Ni alloy coating.…”

Section: Analysis Of Indentation Shape Of Zn-ni Alloy Platingmentioning

confidence: 98%

Effect of Nickel Pre-plating on the Plating of Zn-Ni Alloy Coating on Stainless Steel Substrate

Liu¹,

Zhou²,

Nie³

et al. 2016

Proceedings of the 2nd Annual International Conference on Advanced Material Engineering (AME 2016)

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Abstract. Nickel pre-plating on stainless steel parts, electroplating Zn-Ni alloy layer on the basis of pre-plating layer. In order to improve the bonding strength between the coating and substrate by the introduction of nickel to form a good bonding with the iron matrix. To explore the influence of nickel pre-plating process on the film base bonding strength of Zn-Ni/304 stainless steel. The morphologies, Rockwell hardness indentation and phase structure of the Zn-Ni alloy plating were characterized with Scanning Electron Microscopy (SEM), Metallographic microscope observation, X-ray diffraction (XRD). Corrosion resistance of the Zn-Ni alloy plating was evaluated by electrochemical polarization tests. Results show that after nickel pre-plating adhesion of the coating and stainless steel substrate improved significantly, and the corrosion resistance also improved relative to the direct plating Zn-Ni alloy coating.

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“…The experimental procedures described above were repeated over a total period of 168 -190 hours. The zinc dissolution rate can be represented by corrosion current density, j cor , which can be measured from the average gravimetric values based on the weight loss measurements [40,41]. To ensure that the concentration of the parabenzoquinone (pBQ) is relatively constant over time, solution volumes of 100 -300 cm 3 were used.…”

Section: Zinc Dissolution Testsmentioning

confidence: 99%

Membrane-less hybrid flow battery based on low-cost elements

Leung

Martin

Shah

et al. 2017

Journal of Power Sources

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The capital cost of conventional redox flow batteries is relatively high (> USD$ 200 /kWh) due to the use of expensive active materials and ion-exchange membranes. This paper presents a membrane-less hybrid organic-inorganic flow battery based on the low-cost elements zinc (< USD$ 3 Kg -1 ) and para-benzoquinone (< USD$ 8 Kg -1 ). Redox potential and voltammetric studies show that the open-circuit voltage of the battery is 1.17 -1.59 V over a wide range of pH. Half-cell charge-discharge and dissolution experiments indicate that the negative electrode reaction is limiting due to the presence of chemical side reactions on the electrode surface. The positive electrode redox reactions are not affected and exhibit (half-cell) coulombic efficiencies of > 92.7 % with the use of carbon felt electrodes. In the presence of a fully oxidized active species close to its solubility limit, dissolution of the deposited anode is relatively slow (< 2.37 g h -1 cm -2 ) with an equivalent corrosion current density of < 1.9 mA cm -2 . In a parallel plate flow configuration, the resulting battery was charge-discharge cycled at 30 mA cm -2 with average coulombic and energy efficiencies of c.a. 71.8 and c.a. 42.0 % over 20 cycles, respectively.

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Role of organic additives on zinc plating

Cited by 56 publications

References 2 publications

Synergistic effect of additives on bright nanocrystalline zinc electrodeposition

Synergistic effect of additives on bright nanocrystalline zinc electrodeposition

Effect of Nickel Pre-plating on the Plating of Zn-Ni Alloy Coating on Stainless Steel Substrate

Membrane-less hybrid flow battery based on low-cost elements

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