Pulse plating effect on composition and corrosion properties of zinc alloy coatings

Ramanauskas, R.; Gudavičiūtė, L.; Ščit, O.; Bučinskienė, Dalia; Juškėnas, Remigijus

doi:10.1179/174591908x272924

Cited by 18 publications

(9 citation statements)

References 33 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Pulse plating represents an alternative to the direct current electrodeposition. It has been widely used to improve the electrodeposition of metals and alloys obtained from aqueous solutions [23][24][25]. However, its use in the electrodeposition from traditional ionic liquids (IL) or deep eutectic solvents is relatively new.…”

Section: Introductionmentioning

confidence: 99%

Comparative Study of Ni-Sn Alloys Electrodeposited from Choline Chloride-Based Ionic Liquids in Direct and Pulsed Current

et al. 2019

View full text Add to dashboard Cite

This work presents, for the first time, the electrodeposition of Ni-Sn alloys in pulse current, from deep eutectic solvents (choline chloride: ethylene glycol eutectic mixture). Additionally, in this study, we report a comparison of the electrodeposition methods known as pulse and direct current. The elemental composition of the films, evaluated from EDX, remained almost constant independently on the electrodeposition parameters. The XRD data revealed the presence of the NiSn metastable phase, which has been confirmed by DSC analysis. This phase shows a nanocrystalline structure with crystallite sizes between 12 and 20 nm. The use of pulse current electrodeposition method has led to an improvement of alloys’ mechanical properties. Moreover, by controlling the electrodeposition parameters, we succeeded in tuning the mechanical properties of the coatings prepared through the PC method. We showed that the hardness parameters exhibited by the Ni-Sn alloys are strongly dependent on their crystallite sizes.

show abstract

Section: Introductionmentioning

confidence: 99%

Comparative Study of Ni-Sn Alloys Electrodeposited from Choline Chloride-Based Ionic Liquids in Direct and Pulsed Current

et al. 2019

View full text Add to dashboard Cite

show abstract

“…6c-d). It is postulated that with increase in current density, due to the rise in the overpotential, free energy for formation of new nuclei in Zn-Co alloy deposits increases that leads to higher nucleation rate, and hence formation of coatings with smaller grain size [21]. However, further increase in current density from 15 mA cm -2 to higher values, will result in creation of discrete large Fig.…”

Section: Resultsmentioning

confidence: 97%

“…The electrodeposition of zinc and zinc alloys is usually conducted in both acidic and alkaline solutions [18][19][20][21]. Most of the commercial alkaline baths used for electroplating of zinc and zinc alloys contain cyanide compounds which are both toxic and corrosive [19,20].…”

Section: Introductionmentioning

confidence: 99%

Electrochemical studies of zinc–cobalt alloy coatings deposited from alkaline baths containing glycine as complexing agent

Gharahcheshmeh

Sohi

2010

J Appl Electrochem

View full text Add to dashboard Cite

Co-deposition of Zn-Co alloy coatings that were electrodeposited from weakly alkaline glycine solutions has been studied by cyclic voltammetry. Scanning electron microscopy (SEM), energy depressive spectroscopy (EDS), and X-ray diffraction (XRD) analyses were used to study surface morphology, chemical composition, and phase structure of the coatings. Corrosion behavior of the coatings was also studied using potentiodynamic polarization tests in 3.5 wt% NaCl solution. Cyclic voltammetry results showed that in Zn-Co deposition from an alkaline bath in the presence of glycine, cobalt deposited at a potential near to that of zinc together with successful co-deposition of Co and Zn. It was also shown that reduction-oxidation (redox) reactions of Zn-Co alloy deposits were quasi-reversible and resulted in deviation of electrodeposited alloys from the equilibrium phase diagrams. The corrosion resistance of the deposits was also highly influenced by the composition and morphology of the coatings. Overall, Zn-Co deposit containing 0.89 wt% Co showed that the highest corrosion resistance among the coatings that was due to its single phase structure and fine morphology.

show abstract

“…71 Ramanauskas et al investigated the inß uence of pulse electroplating parameters on surface structure of ZnCo and Zn-Ni coatings. 95 They found differences in the size of crystallite agglomerations and grains between coatings produced by direct and pulsed current techniques, with the latter producing more compact and homogeneous structures. At high current density, however, the formation of dendrites was observed.…”

Section: Silvermentioning

confidence: 97%

Recent applications of SEM and AFM for assessing topography of metal and related coatings — a review

Smith

Larson²,

Campbell

2011

Transactions of the IMF

View full text Add to dashboard Cite

Recent literature describing the use of scanning electron microscopy (SEM) and atomic force microscopy (AFM) in the investigation of morphology and topography of metal surface coatings has been reviewed. SEM has been shown to give valuable data on many properties such as Þ lm uniformity, thickness and cracking, wear patterns and debris, and bond failures. In addition, much information is made possible on coating phase structure, grain size and boundaries, uniformity and heterogeneity, growth mechanisms and porosity. Combined with energy dispersive X-ray analysis and chemical mapping techniques, SEM can be especially powerful. The newer technique of AFM has some advantages over SEM; however, studies tend to focus on imaging nanostructures and quantitative determination of deposit surface roughness. Advances in the application of the technique are expected to further its use, for example, in the measurement of friction, adhesion and elasticity.

show abstract

Pulse plating effect on composition and corrosion properties of zinc alloy coatings

Cited by 18 publications

References 33 publications

Comparative Study of Ni-Sn Alloys Electrodeposited from Choline Chloride-Based Ionic Liquids in Direct and Pulsed Current

Comparative Study of Ni-Sn Alloys Electrodeposited from Choline Chloride-Based Ionic Liquids in Direct and Pulsed Current

Electrochemical studies of zinc–cobalt alloy coatings deposited from alkaline baths containing glycine as complexing agent

Recent applications of SEM and AFM for assessing topography of metal and related coatings — a review

Contact Info

Product

Resources

About