A review of fundamental aspects, characterization and applications of electrodeposited nanocrystalline iron group metals, Ni-Fe alloy and oxide ceramics reinforced nanocomposite coatings

Chaudhari, Alok Kumar; Singh, V. B.

doi:10.1016/j.jallcom.2018.04.090

Cited by 44 publications

(25 citation statements)

References 158 publications

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“…Subsequently, we investigated the effect of metal ions on dendrite growth. As can be seen from Figure , the addition of Ni 2+ affects the morphology of Fe dendrites in a large extent, which may benefits from the co‐deposition of Ni‐Fe dendrites by metal Fe and Ni under this deposition condition . Due to the introduction of nickel, the branches are composed of several spherical particles, and the surface of the dendrite is smoother than Fe dendrite.…”

Section: Resultsmentioning

confidence: 95%

“…As can be seen from Figure 4, the addition of Ni 2+ affects the morphology of Fe dendrites in a large extent, which may benefits from the codeposition of Ni-Fe dendrites by metal Fe and Ni under this deposition condition. 47,48 Due to the introduction of nickel, the branches are composed of several spherical particles, and the surface of the dendrite is smoother than Fe dendrite. As exhibited in Figure 4B-E, when the concentration of Ni 2+ was greater than 50 g L −1 , the metal dendrite was uniform, and the degree of branching increases relatively.…”

Section: Electrochemical Measurementmentioning

confidence: 99%

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Controllable constructing alloy dendrites with fractal structure as free‐standing electrode for enhanced oxygen evolution

Zhang

Liu

2020

Int J Energy Res

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Summary The design of non–noble metal binderless electrode for enhanced electrocatalytic oxygen evolution is an unremitting challenge. Herein, we first report the construction of fractal structural alloy electrodes using controllable electrodeposition. Meanwhile, we have explored the regulation and morphology transition of metal dendrites in the electrolytic process. The metal wire‐type “one‐body” electrode prepared in the full‐immersion reactor demonstrates the unique three‐dimensional fractal structure with high branching degree and surface area. Moreover, the compositional turning of metal crystal via element doping is beneficial to improving the conductivity and crystal structure. The Ni and Zn elements are introduced to form Ni‐Fe and Zn‐Fe alloy dendrites, showing a preferable electrochemical catalytic oxygen evolution performance. The as‐prepared Ni‐Fe dendrite demonstrates a lower overpotential about 248 mV (vs RHE) at 10 mA cm−2 and Tafel slope of 55 mV dec−1 in the alkaline condition.

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Section: Resultsmentioning

confidence: 95%

Section: Electrochemical Measurementmentioning

confidence: 99%

Controllable constructing alloy dendrites with fractal structure as free‐standing electrode for enhanced oxygen evolution

Zhang

Liu

2020

Int J Energy Res

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“…It is well known that the Fe-Ni alloy electrodeposition was classified as anomalous co-deposition by Brenner [15], because the less noble Fe (more negative standard potential) is preferentially deposited, consequently resulting in more Fe (or less Ni) in the deposit than in the bath. The converse phenomenon is named regular co-deposition [2,15], which has been found in a citrate-ammonia system by Zhou et al [16]. They proposed a poly-nuclear complex deposition mechanism to understand the converse phenomenon.…”

Section: Chemical Composition and Surface Morphology Of Fe-ni Alloy Fmentioning

confidence: 91%

“…Coatings 2019, 9, 56 5 of 12 Figure 3b shows the relationship between the deposition rate and current density. The current density was selected according to Equation (2). It can be seen that the relationship of the deposition rate and current density is linear.…”

Section: Electrodeposition Of Fe-ni Alloy Foilsmentioning

confidence: 99%

“…Electrodeposition of the Fe-Ni alloy is receiving constant attention because the method is considered as easy and cost-effective and Fe-Ni alloys have many desirable performances in the mechanical, magnetic, electrical, corrosion, and wear-resistant fields [1]. The performance could be further improved by introducing heterogeneous particles (for example SiC, Al 2 O 3 , ZrO 2 and Si 3 N 4 ) into the Fe-Ni matrix [1,2].…”

Section: Introductionmentioning

confidence: 99%

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Rapid Electrodeposition of Fe–Ni Alloy Foils from Chloride Baths Containing Trivalent Iron Ions

Zhao

Tian

et al. 2019

Coatings

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This work presents the rapid electrodeposition of Fe-Ni alloy foils from chloride baths containing trivalent iron ions at a low pH (<0.0). The effect of the concentration of Ni 2+ ions on the content, surface morphology, crystal structure, and tensile property of Fe-Ni alloys is studied in detail. The results show that the co-deposition of Fe and Ni is controlled by the adsorption of divalent nickel species at low current density and the ionic diffusion at high current density. The current density of preparing smooth and flexible Fe-Ni alloy foils is increased by increasing the concentration of Ni 2+ ions, consequently the deposition rate of Fe-Ni alloy foils is increased. For example, at 0.6 M Ni 2+ ions, the current density can be applied at 50 A·dm −2 , along with a high deposition rate of~288 µm·h −1 .

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Correlation between the bath composition and nanoporosity of DC‐electrodeposited Ni‐Fe alloy

Maizza

Pero

Kačiulis

et al. 2020

Surface & Interface Analysis

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The outstanding mechanical strength of as‐deposited DC‐electrodeposited nanocrystalline (nc) Ni‐Fe alloys has been the subject of numerous researches in view of their scientific and practical interest. However, recent studies have reported a dramatic drop in ductility upon annealing above 350°C, associated with a concomitant abnormal rapid grain growth. The inherent cause has been ascribed to the presence of a detrimental product or by product in the bath, which affects either the microstructure or causes defects in the concentration and/or distribution of the as‐deposited films. The present work has been inspired by the observed abnormal behaviour of annealed electrodeposited nc Ni‐Fe alloy, which has here been addressed by considering the relationship between the composition of the bath (iron‐chloride, nickel‐sulphate solution, saccharin and ascorbic acid) and deposition defects (e.g. grain boundary pores) in the case of an nc Ni‐Fe (Fe 48 wt%) alloy. The current investigations have included X‐ray photoelectron spectroscopy (XPS), field emission scanning electron microscopy (FESEM) and transmission electron microscopy (TEM) in both as‐deposited and post‐annealed conditions (300°C–400°C). XPS depth profiling with Ar ion sputtering showed a significant amount of C and O impurities entrapped in the foils during deposition. As such impurities are often overlooked in common analytical techniques, new scenarios may need to be rationalised to explain the observed drop in tensile ductility of the as‐deposited Ni‐Fe alloys.

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A review of fundamental aspects, characterization and applications of electrodeposited nanocrystalline iron group metals, Ni-Fe alloy and oxide ceramics reinforced nanocomposite coatings

Cited by 44 publications

References 158 publications

Controllable constructing alloy dendrites with fractal structure as free‐standing electrode for enhanced oxygen evolution

Controllable constructing alloy dendrites with fractal structure as free‐standing electrode for enhanced oxygen evolution

Rapid Electrodeposition of Fe–Ni Alloy Foils from Chloride Baths Containing Trivalent Iron Ions

Correlation between the bath composition and nanoporosity of DC‐electrodeposited Ni‐Fe alloy

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