Composite coatings of nickel and ceramic particles prepared in two steps

Shrestha, Nabeen K.; Sakurada, Kazuaki; Masuko, Masabumi; Saji, Tetsuo

doi:10.1016/s0257-8972(01)01045-3

Cited by 95 publications

(38 citation statements)

References 16 publications

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“…Pure nickel films have been widely employed for their corrosion resistance [7,8], this property can be combined with the mechanical properties of alumina to produce Ni-Al 2 O 3 composite films exhibiting enhanced hardness [6, and wear resistance [9,13,16,22,25,26,[28][29][30][31] whilst maintaining the corrosion resistance of nickel [ [18], 321, [33,34]]. Whilst there is a considerable amount of literature available on this composite material a systematic investigation of the main deposition parameters has not been considered in detail.…”

Section: Introductionmentioning

confidence: 99%

Electro co-deposition of Ni–Al2O3 composite coatings

et al. 2012

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Nickel-Al 2 O 3 composite coatings have been successfully deposited galvanostatically on to stainless steel substrates by electro co-deposition from a Watts bath containing between 50 and 150 g/l of sub-micron or nanosized alumina particles applying current density of -10, -20 and -32 mA cm -2 . The alumina distribution in the composite films on the two sides of the substrate was remarkably different due to solution hydrodynamics and electric field effects. The effect of current density, particle concentration in the bath and particle size are studied systematically producing a comprehensive set of data for better understanding the effects of these variables on the amount of particles co-deposited. The amount of Al 2 O 3 co-deposited in the films increases with the particle concentration in the bath and strongly depends on the current density and on particle size. The effect of the current density and of the alumina inclusions on the crystallinity of the Ni matrix and on the Ni crystallites grain size has also been studied. The inclusions of nano or sub-micron-Al 2 O 3 particles are found to strongly influence the metallic nickel microstructure.

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Section: Introductionmentioning

confidence: 99%

Electro co-deposition of Ni–Al2O3 composite coatings

et al. 2012

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“…So in 1972, Guglielmi developed the first model to the smaller the embedded particles are. In contrast, other papers report that disordering of the grain growth due to particle embedding leads to defects and higher internal stresses in the coatings [20][21][22]. If conducting particles are incorporated, the corrosion behaviour depends on their electrochemical potential [19,23,24].…”

Section: Introductionmentioning

confidence: 99%

Electroplated Nickel Composites with Micron- to Nano-Sized Particles

Wielage

Lampke

Zacher

et al. 2008

KEM

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Abstract. Electroplated nickel coatings provide ductility, excellent corrosion resistance and good wear resistance, which qualifies them to meet complex demands of engineering, microtechnology and microelectronics. The co-deposition of particles is a promising alternative to deposit layers with adequate microstructure and properties avoiding the rise of residual stress. The incorporation of the sufficient quantity of particles, monodisperse distribution and downsizing to nanometre scale affect the amount of strengthening by dispersion hardening. To avoid agglomeration in the electroplating bath as well as in the layer is a challenge which has been met by simple Watts nickel electrolyte with a minimum of organic additives and adequate bath agitation comprising sonication, i.e. the exposure of the bath to high-frequency sound waves.Well-dispersed hard particles (titanium oxide and silicon carbide) were incorporated in nickel films. The focus was set on the correlation between the gained microstructure of the composites with particles from micron to nanometre scale and the electrochemical and mechanical properties. Corrosion was quantified from polarisation curves and volumetric erosion measurements. Wear resistance was evaluated by scratch energy density studies, oscillating sliding wear testing and cavitation wear testing and compared to indentation hardness results.Sonication and particle downsizing result in matrix grain refinement and dispersion hardening. Incorporation of different particles with respect to different material and size proved to meet different demands. Submicron TiO 2 is best for high corrosion resistance, sonicated nickel without particle incorporation is best for high abrasion resistance, nano TiO 2 is best for oscillating sliding wear resistance and submicron SiC is best for cavitation wear resistance.

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“…They can vary from nanometric to micrometric sizes and can enhance significantly many properties of the deposits, including their mechanical [3][4][5][6], tribological [5,7,8] and anti-corrosion behavior [9,10]. These effects depend on the content, size and type of particles being incorporated into the metal matrix [3,5,7,8]. Research on ECC concentrates mainly on the influence of the incorporated particles on the properties of the composites and on the particle co-deposition mechanisms.…”

Section: Introductionmentioning

confidence: 99%

Effects of SiC and Al2O3 particles on the electrodeposition of Zn, Co and ZnCo. I. Electrodeposition in the absence of SiC and Al2O3

Tulio

Carlos

2008

J Appl Electrochem

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Electrodeposition of Zn, Co and ZnCo from acid sulfate solutions onto steel was investigated in this first part of a study of the effects of SiC or Al 2 O 3 particles on these processes and the formation of ZnCo-SiC and ZnCo-Al 2 O 3 electrocomposites. Zn electrodeposition shows a well-defined pre-bulk region, where the hydrogen evolution reaction (HER) and Zn underpotential deposition (upd) compete. Zn bulk electrodeposition begins with primary nucleation and diffusion-controlled growth, strongly dependent on conditions favoring previous Zn upd against HER. It is assumed that this first bulk process takes place over the upd Zn. Zn bulk electrodeposition is followed by secondary nucleation and growth. Co electrodeposition begins with a slow Co 2þ ðaqÞ reduction in parallel with HER, followed by a faster Co 2þ ðaqÞ reduction. Zn 2þ ðaqÞ strongly hinders the initial Co 2þ ðaqÞ reduction. The ZnCo and Zn electrodeposition curves are initially similar, retaining features of pre-bulk and bulk Zn electrodeposition.

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Composite coatings of nickel and ceramic particles prepared in two steps

Cited by 95 publications

References 16 publications

Electro co-deposition of Ni–Al2O3 composite coatings

Electro co-deposition of Ni–Al2O3 composite coatings

Electroplated Nickel Composites with Micron- to Nano-Sized Particles

Effects of SiC and Al2O3 particles on the electrodeposition of Zn, Co and ZnCo. I. Electrodeposition in the absence of SiC and Al2O3

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