Effect of Ultrasonic Nanocrystal Surface Modification on Properties of Electrodeposited Ni and Ni-SiC Composite Coatings

Gyawali, Gobinda; Joshi, Bhupendra; Tripathi, Khagendra; Lee, Soo Wohn

doi:10.1007/s11665-017-2891-4

Cited by 33 publications

(24 citation statements)

References 22 publications

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“…211 [ preferred orientation was apparent in the SiC500 deposits independently of the agitation type, as evidenced by the intensity of the (200) crystal plane and the enhancement of (111) and (311), attributed to a dispersed \ 211 [ orientation [13]. Similar changes in nickel crystals were observed in previous studies [13,27,35], where the enhancement of the \ 211 [ mode of crystal growth was associated with the presence of particles. An adsorption-desorption phenomenon of H ?…”

Section: Microstructure and Internal Stressessupporting

confidence: 79%

Effects of SiC particles codeposition and ultrasound agitation on the electrocrystallisation of nickel-based composite coatings

et al. 2021

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This study analysed the influence of the codeposition of SiC particles with different sizes: 50 nm, 500 nm and 5 μm, and the type of bath agitation (stirring or ultrasonic) on the electrocrystallisation of nickel coatings. The composites matrix microstructure was analysed by means of SEM, EBSD and XRD, to evaluate the grain size, crystal orientation, and internal stresses and was benchmarked against pure nickel samples electrodeposited in equivalent conditions. The codeposition of nano- and microsize particles with an approximate content of 0.8 and 4 vol.%, respectively, caused only a minor grain refinement and did not vary the dominant < 100 > crystal orientation observed in pure Ni. The internal stress was, however, increased by particles codeposition, up to 104 MPa by nanoparticles and 57 MPa by microparticles, compared to the values observed in pure nickel (41 MPa). The higher codeposition rate (11 vol.%) obtained by the addition of submicron-size particles caused a change in the grain growth from columnar to equiaxial, resulting in deposits with a fully random crystal orientation and pronounced grain refinement. The internal stress was also increased by 800% compared to pure nickel. The ultrasound (US) agitation during the deposition caused grain refinement and a selective particle inclusion prompting a decrease in the content of the particles with the larger particles. The deposits produced under US agitation showed an increase in the internal stresses, with double values compared to stirring. The increase in the deposits microhardness, from 280 HV in pure Ni to 560 HV in Ni/SiC submicron-US, was linked to the microstructural changes and particles content. Graphical abstract

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Section: Microstructure and Internal Stressessupporting

confidence: 79%

Effects of SiC particles codeposition and ultrasound agitation on the electrocrystallisation of nickel-based composite coatings

et al. 2021

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“…The deposition of composite electrochemical coatings (CECs) is a reliable and economically feasible method for modifying metal surfaces in order to impart new functional properties to them [1][2][3]. Among the CECs, coatings based on nickel [4][5][6][7][8][9][10][11][12] and its alloys [13][14][15][16][17][18][19][20][21][22] have become widespread, which is due to the ability of nickel to form electrolytic deposits with dispersed particles of different nature which have good adhesion to the metal base [4]. It should be noted that the electrochemical deposition of alloys is one of the special cases of parallel electrode reactions with their significant mutual influence.…”

Section: Introductionmentioning

confidence: 99%

“…The effectiveness of the practical application of CECs is largely determined by the nature and properties of the dispersed phase. Currently, composite coatings modified with various carbon materials are widely studied: nanodiamonds [9], fullerenes [4], carbon nanotubes [10], carbides [8,12], etc. Graphite and its derivatives are of particular interest as dispersed phases used in the preparation of CECs.…”

Section: Introductionmentioning

confidence: 99%

Electrodeposition of Graphene Oxide Modified Composite Coatings Based on Nickel-Chromium Alloy

et al. 2021

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Composite electrochemical coatings (CECs) based on nickel-chromium alloy and modified with multilayer graphene oxide (GO) were obtained. The electrodeposition process of these coatings was studied in the potentiodynamic mode. The structure and the composition of nickel–chromium–GO CECs were studied by scanning electron microscopy and laser microspectral analysis. Nickel–chromium–GO CECs are dense and uniform. The carbon content in them increases when moving from the substrate to the surface. It was established that the addition of GO particles into the composition of electrolytic coatings with a nickel-chromium alloy results in the increase in their microhardness from 4423–5480 MPa to 6120–7320 MPa depending on the cathodic current density.

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“…Therefore, CECs are used in various industries, and the development of new composite coatings is an important scientific and technical task. Among CECs, coatings based on nickel [ 4 , 5 , 6 , 7 , 8 , 9 , 10 , 11 ] and its alloys [ 12 , 13 , 14 , 15 , 16 , 17 , 18 , 19 ] have become widespread, which is due to the ability of nickel to form electrolytic deposits with dispersed particles of a different nature which have good adhesion to the metal substrate. Nickel-based composite coatings are characterized by hardness and resistance in various corrosive environments.…”

Section: Introductionmentioning

confidence: 99%

“…The characteristics of the CECs are largely determined by the properties of the dispersed phase. Currently, a significant number of studies are devoted to the electrodeposition of composite nickel coatings modified with nanosized and nanostructured carbon materials: fullerene C 60 [ 4 ], carbon nanotubes [ 5 , 6 , 7 ], nanodiamonds [ 10 ], carbides [ 8 , 11 ], etc. Among the carbon compounds, graphite and its derivatives are of interest.…”

Section: Introductionmentioning

confidence: 99%

Electrodeposition and Corrosion Properties of Nickel–Graphene Oxide Composite Coatings

et al. 2021

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Nickel-based composite electrochemical coatings (CEC) modified with multilayer graphene oxide (GO) were obtained from a sulfate-chloride electrolyte in the reverse electrolysis mode. The microstructure of these CECs was investigated by X-ray phase analysis and scanning electron microscopy. The corrosion-electrochemical behavior of nickel–GO composite coatings in a 0.5 M solution of H2SO4was studied. Tests in a 3.5% NaCl solution showed that the inclusion of GO particles into the composition of electrolytic nickel deposits makes their corrosion rate 1.40–1.50 times less.

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Effect of Ultrasonic Nanocrystal Surface Modification on Properties of Electrodeposited Ni and Ni-SiC Composite Coatings

Cited by 33 publications

References 22 publications

Effects of SiC particles codeposition and ultrasound agitation on the electrocrystallisation of nickel-based composite coatings

Effects of SiC particles codeposition and ultrasound agitation on the electrocrystallisation of nickel-based composite coatings

Electrodeposition of Graphene Oxide Modified Composite Coatings Based on Nickel-Chromium Alloy

Electrodeposition and Corrosion Properties of Nickel–Graphene Oxide Composite Coatings

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