Synergetic effects of pulse constraints and additives in electrodeposition of nanocrystalline zinc: Corrosion, structural and textural characterization

Chandrasekar, M.; Shanmugasigamani,; Pushpavanam, Malathy

doi:10.1016/j.matchemphys.2010.07.004

Cited by 48 publications

(35 citation statements)

References 31 publications

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“…The deposit obtained in their presence exhibit improved material properties such as surface reflectance, and corrosion resistance. The carbonyl compounds like o-chlorobenzylaldehyde [5], benzylideneacetone [7][8][9][10][11][12][13], Vanilline [14] glycylglycine [2] etc. were reported as brighteners for zinc deposition.…”

Section: Introductionmentioning

confidence: 99%

“…Few researchers in their work considered synergistic interaction between the additives, to explain their role in producing bright or quality deposit [7,22,26]. Hsieh et al reported the existence of complicated interaction among additives NP16 (polyoxyethylene nonyl phenyl ether), OCBA (o-chloro benzyl aldehyde) and S40 (polyoxyethylene lauryl amine).…”

Section: Introductionmentioning

confidence: 99%

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Synergistic effects of additives on morphology, texture and discharge mechanism of zinc during electrodeposition

Nayana

Venkatesha

2011

Journal of Electroanalytical Chemistry

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Synergistic effects of additives on morphology, texture and discharge mechanism of zinc during electrodeposition

Nayana

Venkatesha

2011

Journal of Electroanalytical Chemistry

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“…All solutions were prepared with AR grade chemicals and deionized water. The sulfate bath was prepared by dissolving ZnSO 4 •7H 2 O (zinc salt), Na 2 SO 4 (conductive salt) and H 3 BO 3 (maintain pH of bath solution) in deionized water. Once the solids were dissolved, the pH value of the solution was adjusted to 2 by the addition of sulfuric acid (2 ml L −1 ), followed by the addition of the additive.…”

Section: Methodsmentioning

confidence: 99%

“…Therefore, many efforts have been made in order to improve its properties, such as chemical passivation, heat treatment, superhydrophobic treatment and nano-electrodeposition technologies. [1][2][3][4] Among these methods, nano-electrodeposition is undoubtedly the most promising alternative for conventional electrodeposition technology. This is because the nano-electrodepositon doesn't require post-processing treatment compared with others surface treatment methods.…”

mentioning

confidence: 99%

Insight into the Role and Its Mechanism of Polyacrylamide as an Additive in Sulfate Electrolytes for Nanocrystalline Zinc Electrodeposition

Wang

Yang

et al. 2016

J. Electrochem. Soc.

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Electrodeposition of nanocrystalline zinc coating is greatly significant in improving the mechanism, wear and corrosion properties of conventional coarse-grained zinc coating and its formation is usually by the synergetic effect of two or more additives on electrodeposition reaction. However, the multicomponent additives not only make the electrolytes complicate and unstable, but also difficult to analyze the effect mechanism of each additive on electrodeposition of nanocrystalline zinc coating. In this study, nanocrystalline zinc coating is electrodeposited from a simple sulfate bath with polyacrylamide as the only additive. The influence and effect mechanism of polyacrylamide on electrodeposition of nanocrystalline zinc coating are investigated. It is found that the addition of polyacrylamide does not change the instantaneous nucleation mechanism with three-dimensional diffusion-controlled growth nucleation of zinc, however an increase in the zinc deposition potential is observed in the presence of polyacrylamide compared with electrodeposition of zinc coating from the additive-free bath. The zinc deposition overpotential increase is due to the absorption of polyacrylamide on the surface of the electrode, specifically the synergistic adsorption of its polymer chain and amine group, which is beneficial for increasing the free energy to form new nuclei, thereby results in a higher nucleation rate and smaller grain size. Electrodeposition of zinc coating as a common, practical and low cost surface modification technology has been widely employed in field of protection of steel against corrosion. However, the poor mechanical, tribological and electrochemical properties of conventional zinc electrodeposits increase the probability of damage and thus, reduce the life of the coating, as well as lead to a wasted of zinc. Therefore, many efforts have been made in order to improve its properties, such as chemical passivation, heat treatment, superhydrophobic treatment and nano-electrodeposition technologies.1-4 Among these methods, nano-electrodeposition is undoubtedly the most promising alternative for conventional electrodeposition technology. This is because the nano-electrodepositon doesn't require post-processing treatment compared with others surface treatment methods. Previous researches have also demonstrated that the nanohardness increased to about 3 times when the grain size of coarse-grained zinc coatings was reduced from micro to nano scales, and the wear rate of nanocrystalline zinc coating was found to be about 96% lower than that of coarsegrained zinc coating. 5 The corrosion rate of the nanocrystalline zinc coating is less than 1/2 of that of the coarse-grained zinc coating in NaCl and NaOH corrosion mediums. 6,7 So far, several related works about electrodeposition of nanocrystalline zinc coatings were reported. Such as Ramanauskas et al. 8 electrodeposited the nanocrystalline zinc coatings from an alkaline cyanide-free solution in the presence of organic additives by pulse electrodeposition, with ...

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“…Zinc components are the most widely used coatings for protection of steel against corrosion [2,3]. The success of using zinc for protection of steel components can be attributed to its low cost, ease of application, and sacrificial nature [2,4]. By virtue of the fact that, under the same conditions (3.5 wt.% NaCl solution), the potential of zinc is more negative (−1050 mV/SCE) than that of steel (−650 mV/SCE) [3], zinc deposits act as sacrificial anodes and provide cathodic protection of steel [3,5].…”

Section: Introductionmentioning

confidence: 99%

An Electrochemical Synthesis of Reduced Graphene Oxide/Zinc Nanocomposite Coating through Pulse-Potential Electrodeposition Technique and the Consequent Corrosion Resistance

Asl

Afshar

Yaghoubinezhad

2018

International Journal of Corrosion

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Pulse-potential coelectrodeposition of reduced graphene oxide/zinc (rGO-Zn) nanocomposite coating is directly controlled upon a steel substrate from a one-pot aqueous mixture containing [GO−/Zn2+]δ+ nanoclusters. GO nanosheets are synthesized by modified Hummer’s approach while Zn cations are produced in the solution and deposited on GO nanosheets using anodic dissolution technique. Eventually, nanoclusters are reduced to rGO-Zn film through an electrochemical process. Chemical composition, surface morphology, and corrosion resistance of the thin film are characterized. Results show that the corrosion resistance of rGO-Zn coating is approximately 10 times more than the bare steel.

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Synergetic effects of pulse constraints and additives in electrodeposition of nanocrystalline zinc: Corrosion, structural and textural characterization

Cited by 48 publications

References 31 publications

Synergistic effects of additives on morphology, texture and discharge mechanism of zinc during electrodeposition

Synergistic effects of additives on morphology, texture and discharge mechanism of zinc during electrodeposition

Insight into the Role and Its Mechanism of Polyacrylamide as an Additive in Sulfate Electrolytes for Nanocrystalline Zinc Electrodeposition

An Electrochemical Synthesis of Reduced Graphene Oxide/Zinc Nanocomposite Coating through Pulse-Potential Electrodeposition Technique and the Consequent Corrosion Resistance

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