Exploring environment friendly nickel electrodeposition on AZ91 magnesium alloy: Effect of prior surface treatments and temperature of the bath on corrosion behaviour

Singh, Charu; Tiwari, Shashi Kant; Singh, Raghuvir

doi:10.1016/j.corsci.2019.02.004

Cited by 41 publications

(9 citation statements)

References 36 publications

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“…The workpiece immersed in the plating solution absorbed the temperature of the plating solution, and the process eliminated the influence of the temperature gradient generated in the impingement jet and free jet areas because of the difference between the temperatures of the workpiece surface and plating solution during jet-electrodeposition. It accelerated the free movement and deposition rate of Ni 2+ [16]. Moreover, when the current density was increased from 20 to 50 A•dm −2 , the Ni content increased with current density.…”

Section: Analysis Of Elemental Composition and Microstructure Of The ...mentioning

confidence: 91%

“…When the workpiece is immersed in the plating solution, the gap between the anode nozzle and cathode workpiece and other surrounding areas are filled with the plating solution; thus, the medium between the cathode and anode becomes uniform, and the electric field between the anode and cathode becomes stable. In addition, the temperature of the plating solution around the workpiece is uniform and high, which accelerates the diffusion of ions [16]. Therefore, when the limiting current density of the deposition continues to increase, Ni 2+ in the reaction zone can be replenished quickly by the surrounding plating solution, which alleviates the concentration polarization phenomenon caused by excessively rapid deposition during traditional jet-electrodeposition.…”

Section: Equipment and Principle Of Immersion-assisted Jet-electrodep...mentioning

confidence: 99%

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Effect of Current Density on the Wear Resistance of Ni–P Alloy Coating Prepared through Immersion-Assisted Jet-Electrodeposition

et al. 2021

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To improve the wear resistance of 45 steel surfaces, a Ni−P alloy coating was prepared on the surface of 45 steel with an immersion-assisted jet-electrodeposition technology. Scanning electron microscopy, energy dispersive spectrometry, X-ray diffraction and confocal microscopy were used in testing the surface morphology, composition, structure, grain size, and wear scar parameters of the coating. The effect of immersion-assisted jet-electrodeposition on the wear resistance of Ni−P alloy coating at current densities of 20–60 A·cm−2 were explored and analyzed. Results showed that the surface quality, microhardness, and wear resistance of Ni−P alloy coatings prepared through immersion-assisted jet-electrodeposition were improved compared with those of the coatings prepared through traditional jet-electrodeposition. With the increase in the current density, the surface cell structure of the alloy coating was refined, the flatness was improved, the surface Ni content was increased, the grain size was refined, and the coating thickness, the microhardness, and wear resistance showed a trend of first increasing and then decreasing. The best surface quality of the coating was observed at a current density of 50 A·cm−2. Moreover, the unit cell structure was obvious, the surface was flat and dense, the coating thickness was the largest, reaching 21.42 μm, the highest Ni content was obtained (98.25 wt.%), the smallest grain size (6.6 nm) was obtained, the microhardness of the coating reached a maximum value (725.58 HV0.1), and the best wear resistance was observed.

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Section: Analysis Of Elemental Composition and Microstructure Of The ...mentioning

confidence: 91%

Section: Equipment and Principle Of Immersion-assisted Jet-electrodep...mentioning

confidence: 99%

Effect of Current Density on the Wear Resistance of Ni–P Alloy Coating Prepared through Immersion-Assisted Jet-Electrodeposition

et al. 2021

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“…A constant phase element (CPE) was introduced instead of a capacitor to account for the time-constant dispersion due to inhomogeneities and surface roughness. The impedance of a CPE is expressed as Z CPE = (Q) −1 (jω) −n , where Q is the admittance (S cm −2 s n ), ω is the angular frequency (rad s −1 ), j is the imaginary number, and n is a dimensionless fractional exponent that ranges between −1 and +1 [37]. Finally, an inductor (L a ) associated in series with a resistance (R a ) was introduced into the model to account for the inductive behavior [38].…”

Section: Open Circuit Potential Variation and Potentiodynamic Polariz...mentioning

confidence: 99%

Experimental Apparent Stern–Geary Coefficients for AZ31B Mg Alloy in Physiological Body Fluids for Accurate Corrosion Rate Determination

García-Galván

Fajardo

Barranco

et al. 2021

Metals

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The corrosion behavior of AZ31B Mg alloy exposed to Ringer’s, phosphate-buffered saline (PBS), Hank’s, and simulated body fluid (SBF) solutions for 4 days was investigated using electrochemical impedance spectroscopy (EIS), potentiodynamic polarization, weight loss, and surface characterization. Changes in corrosion rates with immersion time determined by weight loss measurements were compared with EIS data to determine the possibility of obtaining quantitative electrochemical information. In addition, changes in the protective properties of the corrosion product layer calculated from the EIS parameters were evaluated as a function of their surface chemical composition as determined by X-ray photoelectron spectroscopy (XPS) and visual observations of the corroded specimen’s surface. Apparent Stern–Geary coefficients for the AZ31B Mg alloy in each test solution were calculated using the relationship between icorr from weight loss measurements and the EIS data (both Rp and Rt). This provided experimental reference B′ values that may be used as a useful tool in independent investigations to improve the accuracy of corrosion rates of AZ31B Mg alloy in simulated body solutions.

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“…There are several surface treatments for preparing superhydrophobic surfaces, [15][16][17][18][19][20] one of which is electroless plating (EP). Generally, superhydrophobic surfaces require ingenious microstructures different from those of nickel coatings.…”

Section: Introductionmentioning

confidence: 99%

A new approach for constructing rough structures to fabricate superhydrophobic Ni–B/graphene oxide (GO) coating

Shen,

Zhang

2024

Surface Engineering

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In this study, AZ91 magnesium alloy was effectively coated with a superhydrophobic Ni–B/graphene oxide (GO) coating via electroless plating and surface modification. Scanning electron microscopy, energy dispersion spectrum, X-ray powder diffraction, and X-ray photoelectron spectroscopy analysis were employed to describe the development of Ni–B/GO coatings. The results show that the micro–nano rough structures of the superhydrophobic coating were owing to the synergistic action of GO and sodium dodecyl sulphate and their respective effects on the coating. It was also found that the nanoscale GO particle wrapped around the underdeveloped nickel grains. Also, the composition and structure of the typical superhydrophobic coating cross-section revealed the growth of the rough structures. Furthermore, the superhydrophobic coating with a water contact angle of up to 161.6° had an amorphous structure. The micro–nano coating therefore provides a novel viewpoint for preparing superhydrophobic coating on magnesium alloy.

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Exploring environment friendly nickel electrodeposition on AZ91 magnesium alloy: Effect of prior surface treatments and temperature of the bath on corrosion behaviour

Cited by 41 publications

References 36 publications

Effect of Current Density on the Wear Resistance of Ni–P Alloy Coating Prepared through Immersion-Assisted Jet-Electrodeposition

Effect of Current Density on the Wear Resistance of Ni–P Alloy Coating Prepared through Immersion-Assisted Jet-Electrodeposition

Experimental Apparent Stern–Geary Coefficients for AZ31B Mg Alloy in Physiological Body Fluids for Accurate Corrosion Rate Determination

A new approach for constructing rough structures to fabricate superhydrophobic Ni–B/graphene oxide (GO) coating

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