Dealloying studies with electrodeposited zinc-nickel alloy films

Stein, Martha T.; Owens, Shirley; Pickering, H. W.; Weil, K. G.

doi:10.1016/s0013-4686(97)00228-4

Cited by 16 publications

(8 citation statements)

References 2 publications

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“…Ni) in deaerated 0.1 M sodium sulphate with the pH adjusted to 3.6 was observed previously by Stein et al [56]. After polarization at potentials below the critical potential E cr  -0.6 V, the surface roughening was not observed whereas, above E cr new intergranular cracks were formed over the whole coating [56]. The potential E cr corresponding to the initiation of such morphological changes accompanied by surface cracking and explained by the zinc dissolution was called "critical de-alloying potential" [57].…”

Section: Effect Of Applied Potentialsupporting

confidence: 77%

“…Similar anodic behaviour of Zn-Ni alloys (10.3% (at.) Ni) in deaerated 0.1 M sodium sulphate with the pH adjusted to 3.6 was observed previously by Stein et al [56]. After polarization at potentials below the critical potential E cr  -0.6 V, the surface roughening was not observed whereas, above E cr new intergranular cracks were formed over the whole coating [56].…”

Section: Effect Of Applied Potentialsupporting

confidence: 61%

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Effect of Cr(III) passivation layer on surface modifications of zinc-nickel coatings in chloride solutions

Kozaderov

Światowska

Dragoé

et al. 2021

J Solid State Electrochem

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Surface chemical and morphological modifications of as-plated and Cr(III)-passivated monophasic zinc-nickel coatings induced by corrosion in chloride solutions are demonstrated. The passivated samples showed slower anodic dissolution, less significant dealloying, smaller surface dezincification and lower coating cracking, as demonstrated by Scanning Electron Microscopy and Energy Dispersive X-ray Spectroscopy (SEM-EDX) of the surface and inductively coupled plasma atomic emission spectroscopy solution analysis. Surface characterisation by X-ray photoelectron spectroscopy (XPS), Raman spectroscopy and SEM-EDS indicated simonkolleite as the main corrosion product for both, as-plated and Cr(III)-passivated coatings. In contrast, only for as-plated coating, which experienced higher cracking, new Ni containing phases (metallic Ni and NiO) were evidenced. The phase transition via selective dissolution of zinc is supposed to increase the concentration of the structural defects and could explain cracking in the non-passivated Zn-Ni coating.

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Section: Effect Of Applied Potentialsupporting

confidence: 77%

Section: Effect Of Applied Potentialsupporting

confidence: 61%

Effect of Cr(III) passivation layer on surface modifications of zinc-nickel coatings in chloride solutions

Kozaderov

Światowska

Dragoé

et al. 2021

J Solid State Electrochem

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“…Results show that 23 the corrosion resistance of deposits is directly dependent on the composition of 24 corrosion products formed during corrosion. Results show that 23 the corrosion resistance of deposits is directly dependent on the composition of 24 corrosion products formed during corrosion.…”

mentioning

confidence: 97%

“…In this case, a new alkaline bath with high 68 current efficiency using 5,5'-dimethylhydantoin (DMH) as a complexing agent is 69 proposed for commercial application [19]. The main corrosion 77 mechanism of Zn-Ni alloys includes dealloying [23] and dezincification [24] of Zn. However, to the best of our knowledge, no related detailed 71 literatures or studies have been proposed to study the corrosion resistance of Zn-Ni 72 alloys using DMH as a complexing agent in Zn-Ni alloy deposition.…”

mentioning

confidence: 99%

Corrosion mechanism of nanocrystalline Zn–Ni alloys obtained from a new DMH-based bath as a replacement for Zn and Cd coatings

et al. 2016

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17Nanocrystalline Zn-Ni alloys were proposed from a new developed 18 5,5'-dimethylhydantoin (DMH)-based bath as replacement of Zn and Cd coatings due 19 to their excellent corrosion resistance and environmental friendly properties. However, 20 the mechanism of better corrosion performance of Zn-Ni samples compared with Zn 21 and Cd coatings was rare to be investigated. In the present study, the corrosion 22 36 impedance spectra (EIS) confirm the above facts that Zn-Ni alloys have better 37 corrosion resistance than Zn and Cd coatings, which can be used as the best 38 alternative to Zn and Cd coatings. 39

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“…При определенных условиях для электроосажденных цинк-никелевых сплавов характерно селективное растворение, т. е. окисление электроотрицательного компонента -цинка, с последующим обогащением поверхностного слоя электроположительным компонентом -никелем, что, как правило, сопровождается развитием поверхности [91][92][93].…”

Section: селективное растворение сплавов цинк-никельunclassified

Zinc-nickel alloy coatings: electrodeposition kinetics, corrosion, and selective dissolution. A review

Burliaev

Kozaderov

Volovitch

2021

kcmf

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A review of the literature is devoted to the patterns of the electrodeposition of zinc-nickel alloys including the kinetics of cathodic reduction of zinc, nickel, and zinc-nickel alloys in ammonium chloride, sulphate, and glycinate deposition electrolytes. We studied the data on the effectiveness of the corrosion resistance of zinc-nickel coatings and summarised the principal patterns of selective dissolution of the Zn-Ni alloys. The role of the addition of glycine to an ammonium chloride deposition electrolyte was determined in the modification of the morphological and anticorrosive properties of the coatings.

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Dealloying studies with electrodeposited zinc-nickel alloy films

Cited by 16 publications

References 2 publications

Effect of Cr(III) passivation layer on surface modifications of zinc-nickel coatings in chloride solutions

Effect of Cr(III) passivation layer on surface modifications of zinc-nickel coatings in chloride solutions

Corrosion mechanism of nanocrystalline Zn–Ni alloys obtained from a new DMH-based bath as a replacement for Zn and Cd coatings

Zinc-nickel alloy coatings: electrodeposition kinetics, corrosion, and selective dissolution. A review

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