Electrodeposition of nanocrystalline zinc from acidic sulfate solutions containing thiourea and benzalacetone as additives

Li, Moucheng; Li, Jiang; Zhang, Wen Qi; Qian, Yu Hai; Luo, Suzhen; Shen, Jiale

doi:10.1007/s10008-006-0194-z

Cited by 63 publications

(34 citation statements)

References 17 publications

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“…Li et al reported the synergistic effect of thiourea and benzalacetone in reducing the grain size of zinc coating. This is due to the combined effect which increased the overpotential, retarded the continuous grain growth, and increased nucleation rate [13,25,26]. All these earlier studies revealed that the generation of a bright, compact zinc deposition is possible only from electrolytes containing two or more specific additives.…”

Section: Introductionmentioning

confidence: 96%

“…Among these only the additives play a prominent role in producing bright deposit with improved quality. Examining the earlier work on this subject revealed that all zinc plating baths are associated with two or more additives and their effect on bright deposition is more pronounced when used in combination [7][8][9][10][11][12][13]. The primary role of these additives is to influence the factors affecting deposition process so as to get a bright coating on the substrate.…”

Section: Introductionmentioning

confidence: 99%

“…The typical examples are cationic (CTABcetyltrimethylammonium bromide), anionic (SDSsodium dodecylsulfate), and nonionic (Triton X-100, poly ethylene glycols PEG) surfactants [12][13][14][15][16][17][18][19][20][21]. Cationic surfactant-like CTAB with positively charged head group interacts electrostatically with the electrode surface and thus get adsorbed on the active sites, modifying the crystal growth mode, tailors the morphology and refining grain size of the deposit [18].…”

Section: Introductionmentioning

confidence: 99%

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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: 96%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Synergistic effect of additives on bright nanocrystalline zinc electrodeposition

et al. 2010

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“…The faster scanning speed makes the No. 2 sample in a short grain growth time, did not have time to form a more regular morphology [11].…”

Section: Methodsmentioning

confidence: 99%

Effect of Laser Cladding Al Ni TiC Powder on Microstructure and Properties of Aluminum Alloy

Zhang¹,

Zhang²,

Ma³

et al. 2017

JMMCE

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In this paper, Al/Ni/TiC powders were mixed on the surface of A380 aluminum alloy, by selecting appropriate laser parameters; the cladding layer with good adhesion to the substrate was obtained. The microstructure and properties of the cladding layer under different laser parameters were analyzed. The results show that: the phase composition of the cladding layer is mainly composed of TiC, Al, Ni, C and Ti phases. The hardness of the cladding region is up to 173.3 HV, which is about 2.9 times the matrix (−59.1 HV). The corrosion voltage (−1.8 V) of the cladding layer shifted significantly from the corrosion potential (−1.18 V), the corrosion current density increased, the resistance value decreased and the diameter of the capacitor arc decreased; all these phenomena indicate that the corrosion resistance of the cladding layer is decreased.

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“…Such properties can be achieved by adding certain organic compounds, i.e., arenes and surface-active agents to the zinc bath [1,2]. Surfactants are commonly used in zinc electrodeposition to control both the shape and size of metallic crystals and, in consequence, to obtain smooth and bright coatings [3,4].…”

Section: Introductionmentioning

confidence: 99%

Electrochemical Reactions of Sodium 2-Ethylhexyl Sulfate Salt

2017

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The electrochemical reactions of sodium 2-ethylhexyl sulfate (EHS) and its effect on the Zn 2+ electroreduction have been investigated at a mercury electrode using cyclic voltammetry. It has been shown that the reduction takes place in two steps. The presence of EHS in the solution containing Zn 2+ ions moves slightly the potential of zinc reduction towards more negative potentials and causes a slight increase in current density. The differential capacity-potential and differential capacity-time measurements indicate strong adsorption in a wide potential range on the electrode surface. In the potential range −0.46 to −0.86 V vs. saturated calomel electrode and at the concentration lower than the critical micelle concentration (CMC), adsorption for the longer time is hardly reversible. At the concentration higher than the CMC, the formation of hemispherical surface micelles is observed. The theoretical maximum degree of electrode coverage computed with the use of quantum-chemical calculations is equal to 3.53 × 10 14 particles cm, and it is larger than the value determined experimentally from cyclic voltammograms. In the case of electrochemical reaction, at a current of 0.3 A, during 180 min, the obtained mineralization of EHS is only 3%.

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Electrodeposition of nanocrystalline zinc from acidic sulfate solutions containing thiourea and benzalacetone as additives

Cited by 63 publications

References 17 publications

Synergistic effect of additives on bright nanocrystalline zinc electrodeposition

Synergistic effect of additives on bright nanocrystalline zinc electrodeposition

Effect of Laser Cladding Al Ni TiC Powder on Microstructure and Properties of Aluminum Alloy

Electrochemical Reactions of Sodium 2-Ethylhexyl Sulfate Salt

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