Electrodeposition of Cd-Ni alloys from ammoniacal baths

Rehim, Sayed S. Abd El; Wahaab, S.M. Abd-El; Abdella, Osama M.

doi:10.1016/0376-4583(84)90086-4

Cited by 7 publications

(3 citation statements)

References 2 publications

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“…Consequently, wt % Cd in the deposit has increased. 15 It may also be noted that the thickness of Ni−Cd coatings increased linearly with applied j, as shown in Table 2. This observation is attributed to the combined effect of increased hydroxide formation (due to local alkalinity caused by excessive hydrogen evolution) and Faraday's law.…”

Section: Resultsmentioning

confidence: 98%

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Magnetically Induced Codeposition of Ni–Cd Alloy Coatings for Better Corrosion Protection

Rao

Hegde

2014

Ind. Eng. Chem. Res.

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The effects of applied magnetic field, B (both parallel and perpendicular) during process of electrodeposition of Ni–Cd alloy coating on mild steel from a newly proposed electrolytic bath have been studied by using X-ray diffraction (XRD), energy-dispersive X-ray (EDX), and scanning electron microscopy (SEM) analysis. Both parallel and perpendicular B reduced the corrosion rates (CRs); however, the effect is more pronounced in case of perpendicular B. Progressive decrease of CR with increase in the intensity of B showed that corrosion protection efficacy bears close relation with changed composition and crystallographic orientation of the coatings. Under optimal condition, Ni–Cd coating deposited at 0.8 T (perpendicular) was found to be 35 times less corrosive than the conventional Ni–Cd coating (B = 0 T) deposited from the same bath for same time. The effect of B on thickness, microhardness, surface morphology, composition, and crystallographic orientation, and hence, the corrosion resistance of the coatings were analyzed in the light of magnetohydrodynamic (MHD) effect.

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Section: Resultsmentioning

confidence: 98%

“…Hence, at high j , the rate of deposition of Ni (more noble metal) is much close to its limiting value than that of Cd. Consequently, wt % Cd in the deposit has increased …”

Section: Resultsmentioning

confidence: 99%

Magnetically Induced Codeposition of Ni–Cd Alloy Coatings for Better Corrosion Protection

Rao

Hegde

2014

Ind. Eng. Chem. Res.

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“…Besides the mass transport, various other factors that are difficult to treat simultaneously should be taken into account; i.e., the change in the deposition efficiency due to the alloy formation because of the impact of the alloying element on the hydrogen evolution overvoltage, structural effects during alloy formation etc. [22][23][24]. An earlier study showed that Co as a minor component beside Ni accumulates in the near-substrate zone in the same manner as Cd does [19].…”

Section: Composition Depth Profile Of Dc-plated Ni-cd Alloys Obtainmentioning

confidence: 85%

In-depth component distribution in electrodeposited alloys and multilayers

Péter

Vad

Csík

et al. 2018

J. Electrochem. Sci. Eng.

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Electroplating of nickel‐cadmium alloys from alkaline solutions

Rehim¹,

Wahaab²,

Abdella³

1985

J. Chem. Tech. Biotechnol.

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The electroplating of Ni‐Cd alloy coatings was carried out from alkaline baths (pH 10). For comparison, electroplating of the parent metals, Ni and Cd, was performed individually under the same conditions. The cathodic current efficiency for codeposition was high and decreased with increasing current density. The codeposition process is an anomalous type of plating with Cd being the preferentially deposited metal. The Ni content in the deposits increased with increasing current density. This increase in Ni content improves the corrosion resistance and microhardness of the deposits. X‐ray diffraction analysis showed that the deposits consist of a mixture of Ni, β, γ, γ1 phases.

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Electrodeposition of Cd-Ni alloys from ammoniacal baths

Cited by 7 publications

References 2 publications

Magnetically Induced Codeposition of Ni–Cd Alloy Coatings for Better Corrosion Protection

Magnetically Induced Codeposition of Ni–Cd Alloy Coatings for Better Corrosion Protection

In-depth component distribution in electrodeposited alloys and multilayers

Electroplating of nickel‐cadmium alloys from alkaline solutions

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