Pulse plating of Ni–Mo alloys from Ni-rich electrolytes

Marlot, A.; Kern, P.; Landolt, D.

doi:10.1016/s0013-4686(02)00544-3

Cited by 108 publications

(53 citation statements)

References 26 publications

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“…This behaviour is in close agreement the results reported in the literature by Marlot et al, 9 which electrodeposited Ni-Mo layers in ammonia-citrate electrolyte applying pulse potential and in similar concentration range of molybdate ion to that used in this investigation. Similar dependence between the amount of Mo in the layer and the molybdate ion concentration was also observed by Donten et al 10 in pyrophosphate plating bath using normal direct current.…”

Section: Edx Analysessupporting

confidence: 93%

“…Similar dependence between the amount of Mo in the layer and the molybdate ion concentration was also observed by Donten et al 10 in pyrophosphate plating bath using normal direct current. Marlot et al 9 pointed out that the observed dependence between the amount of Mo in the layer and the molybdate ion concentration in the plating solution suggests that the codeposition process is limited by diffusion of the molybdate ion.…”

Section: Edx Analysesmentioning

confidence: 99%

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Morphological, structural, microhardness and corrosion characterisations of electrodeposited Ni-Mo and Cr coatings

Lima‐Neto¹,

Correia²,

Vaz³

et al. 2010

J. Braz. Chem. Soc.

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A resistência à corrosão de eletrodepósitos de Cr e Ni-Mo e a influencia do tratamento térmico na estrutura cristalográfica, na morfologia e nas propriedades de microdureza foram investigados. As caracterizações foram feitas usando as técnicas de microscopia eletrônica de varredura (SEM), difração de raios X (XRD) e energia dispersiva de raios X (EDX). Os ensaios de corrosão foram feitos à temperatura ambiente, em solução de NaCl 10 -1 mol dm -3 e usando a técnica de polarização linear potenciodinâmica. O teor de Mo na camada e a eficiência de corrente aumenta com a concentração do íon molibdato no banho de eletrodeposição, enquanto que a morfologia superficial evolui de rugosa e homogênea para trincada com o aumento do teor de Mo na camada. Os ensaios eletroquímicos de corrosão mostram que os eletrodepósitos de Cr são mais resistentes à corrosão que os eletrodepósitos de Ni-Mo e que todas as camadas estudadas corroem em meio de cloreto. Dentre os eletrodepósitos de Ni-Mo estudados, o de Ni-13Mo foi o que apresentou o comportamento de resistência à corrosão mais nobre. A microdureza do eletrodepósito Ni-13Mo aumenta com o aumento da temperatura de tratamento térmico e está relacionado à formação de fases de Ni, Ni 4 Mo e NiMo, durante o tratamento térmico. Ni-13Mo é um potencial candidato a substituir o Cr em aplicações industriais quando a temperatura de operação for maior que 100 °C e que boas propriedades de microdureza sejam requeridas.The corrosion resistance of electrodeposited Cr and Ni-Mo coatings and the influence of heat treatment on the crystallographic structure, morphology and microhardness properties were investigated here. The characterisations were carried out using scanning electron microscopy (SEM), X-ray diffraction (XRD) and energy dispersive X-ray analysis (EDX) techniques. Corrosion tests were performed at room temperature in 10 -1 mol dm -3 NaCl solutions and by potentiodynamic linear polarization technique. The Mo content in the layer and current efficiency increased with the molybdate ion concentration in the plating solution, while the surface morphology evolved from rough and homogeneous to cracked surface with the increase of the amount of Mo in the layer. The electrochemical corrosion tests showed that the Cr coatings have better corrosion resistance than the Ni-Mo coatings in chloride medium and that all the studied coatings corrode in chloride medium. Ni-13Mo coating has the nobler corrosion behavior among the studied Ni-Mo coatings. The microhardness of the Ni-13Mo coatings increased as the annealing temperature increased which is related with the precipitation of Ni, Ni 4 Mo and NiMo phases during the heat treatment of this coating. Ni-13Mo coating is a potential substitute for chromium coating in industrial applications when operating at temperatures higher than 100 °C and good microhardness properties are required.

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Section: Edx Analysessupporting

confidence: 93%

Section: Edx Analysesmentioning

confidence: 99%

Morphological, structural, microhardness and corrosion characterisations of electrodeposited Ni-Mo and Cr coatings

Lima‐Neto¹,

Correia²,

Vaz³

et al. 2010

J. Braz. Chem. Soc.

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“…The surface morphology and roughness of the lms were analyzed using a Nanoscope E-3138j AFM/ STM atomic force microscope (AFM). In pulse electrodeposition [18,19] …”

Section: Experimental Methodsmentioning

confidence: 99%

Structural, Optical, and Electrical Studies on Pulse Plated AgInSe_2 Films

Murugan¹,

Murali

2014

Acta Phys. Pol. A

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In this work, the pulse electrodeposition technique was employed for the rst time to deposit AgInSe2 lms. The lms were deposited at room temperature from a bath containing Analar grade 10 mM silver sulphate, 50 mM indium sulphate and 5 mM SeO2. The deposition potential was maintained at −0.98 V (SCE). Tin oxide coated glass substrates (5.0 Ω/sq) were used for depositing the lms. The duty cycle was varied in the range of 650%. The X-ray diraction pattern of the thin lms deposited at dierent duty cycles indicated the peaks corresponding to AgInSe2. The transmission spectra exhibited interference fringes. Resistivity of the lms increased from 1.5 Ω cm to 12.4 Ω cm. Mobility increased with duty cycle. Carrier density decreased with duty cycle. The photovoltaic parameters of CdS/AgInSe2 solar cells increased with duty cycle.

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“…In pulse electrodeposition [10,11] the potential or current is alternated swiftly between two different values. This results in a series of pulses of equal amplitude, duration and polarity, separated by zero current.…”

Section: Iintroductionmentioning

confidence: 99%