Preparation and characterization of nickel–cobalt-diamond electro-composites by sediment co-deposition

Pushpavanam, Malathy; Manikandan, H.; Ramanathan, K.

doi:10.1016/j.surfcoat.2006.12.004

Cited by 64 publications

(32 citation statements)

References 19 publications

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“…Due to their high wear resistance and low cost of ceramic powders, composite materials such as Ni-SiC manufactured by electro-codeposition method have been investigated to a greater extent and successfully commercialized in the automotive and aerospace industry, particularly for the protection of friction parts [5,6]. This process can be carried out using either Conventional Electro-Co-Deposition technique (CECD), in which the electrodes are positioned vertically in the plating cell, or by Sediment Electro-Co-Deposition (SECD), in which the electrodes are positioned horizontally one over the other with sufficient inter-electrode distance, so that the particles settle on the electrode surface as sediment on the cathode as the metal deposition progresses [7,8]. The latter has the advantage of yielding considerably higher volume% incorporation of particles in the deposit compared to the CECD technique for a given volume% of particles in the solution.…”

Section: Introductionmentioning

confidence: 99%

Effect of Surfactants on the Electrodeposition of Ni-SiC Composites

Narasimman

Pushpavanama

Periasamyb

2012

Port. Electrochim. Acta

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The effect of various surfactants on the volume% codeposition of SiC in a nickel matrix was evaluated. Of the various surfactants tried, tetra methyl ammonium hydroxide (TMAH) was found to be the best for improving the quality of the deposits as well as the homogenous distribution of particles and with reasonable volume% of silicon carbide incorporation in the matrix. Composites were produced using 1 µm and 50 nanometer size powders. The effect of silicon carbide concentration and bath operating variables on the volume% of SiC incorporation in the deposit and the deposition rates were estimated. Substantial improvement in mechanical properties such as hardness and wear resistance was obtained with the nano SiC composite compared to the micro SiC composite.

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Section: Introductionmentioning

confidence: 99%

Effect of Surfactants on the Electrodeposition of Ni-SiC Composites

Narasimman

Pushpavanama

Periasamyb

2012

Port. Electrochim. Acta

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“…Thus, the concentration of the diamond nanoparticles into the electrolyte was chosen as 5 g/l, as obtained by weighting. This value was also chosen according to Pushpavanam et al (2007), is being lower than one used by Lee et al (Ranjan et al 2010). The diamond nanoparticles had sizes ranging from 70 nm till 80 nm and it were ultrasonically dispersed into the electrolyte for 10 min prior to the electrodeposition.…”

Section: Methodsmentioning

confidence: 99%

“…The diamond nanoparticles had sizes ranging from 70 nm till 80 nm and it were ultrasonically dispersed into the electrolyte for 10 min prior to the electrodeposition. The pH of the electrolyte was kept at 4.0 ± 0.5 [similarly to (Pushpavanam et al 2007)], being adjusted with 98 % H 2 SO 4 and 99.5 % NaHCO 3 . The electrolyte solution was mechanically stirred, with 250-300 rpm.…”

Section: Methodsmentioning

confidence: 99%

“…As far as studied in the literature, lower working temperatures were used by other scientists in similar type of experiments [30°C in (Pushpavanam et al 2007) and 40°C in (Ranjan et al 2010)]. We used such a higher working temperature since at higher temperatures one would expect a more efficient crystal growth and lower stress of the crystalline grains.…”

Section: Methodsmentioning

confidence: 99%

“…The dispersed phases incorporated into the nanocomposite layers also include carbide powders, nitrites, boron compounds and ceramic oxides. The crystals sizes, the surface morphology, the preferential orientation and the thickness of the nickel electrodepositions depend both on the electrolysis conditions and on the composition of the electrolyte (Feldstein 1981;Kollia and Spyrellis 1993;Pushpavanam et al 2007;Chandrasekar and Pushpavanam 2008).…”

Section: Introductionmentioning

confidence: 99%

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Synthesis and characterization of nickel–diamond nanocomposite layers

Gheorghieş

Rusu²,

Bund

et al. 2013

Appl Nanosci

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Electrodeposition can be used in order to prepare nanocomposite coatings made of nanoparticles dispersed into a metallic matrix, onto a metallic substrate. These kinds of coatings can combine the properties of the matrix and of the dispersed nanoparticles, which can lead to some interesting properties of the mixture. Including diamond nanoparticles into a metallic matrix can take advantage of the diamond properties, especially of its hardness and inertness in many chemical media. Still, the proper control of the electrodeposition parameters is a must in order to obtain the best microhardness and corrosion behavior of such nanocomposite coating. This paper proposes the comparative analysis between Ni/diamond nanocomposite coatings, prepared by electrodeposition, by varying several deposition parameters and the corresponding pure nickel coatings onto the same type of substrate, namely copper. Microstructural and morphological analysis of the two kinds of coatings are also performed and studied, along with microhardness measurements and corrosion resistance tests. It is concluded that specific electrodeposition technique and corresponding parameters must be used in order to prepare those Ni/diamond nanocomposite coatings with the best microhardness and best corrosion resistance.

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Effect of Rough‐Surfaced Diamond Content on the Microstructure, Tribological Behavior, and Corrosion Resistance of Ni/Diamond Composite Coatings

2023

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This study fabricates certain Ni/diamond composite coatings using a coelectrodeposition method and then evaluates the effect of diamond content on the morphology, phase structure, microhardness, wear, and corrosion resistance of such coatings, while exploring their tribological and anticorrosion mechanisms. It is demonstrated that the addition of diamond can change the preferred orientation of Ni from (200) to (111), and its texture coefficient value can be boosted from 23.3% to 64.4% with the increase of diamond content. In the experiment, at a diamond content of 3 g L−1, the deposited diamond particles are more and evenly dispersed across the composite, with the microhardness of nickel‐based coatings reaching an optimum value of 613 HV. In addition, the coefficient of friction is reduced to a minimum value of 0.627, while the wear rate is kept at only 1.79 × 10−5 mm3 Nm−1, indicating a high wear resistance. Electrochemical test results demonstrate that the Ni/diamond composite coatings produced at 3 g L−1 create the maximum charge transfer resistance (5429.3 Ω cm2) and the minimum corrosion current density (2.19 μA cm−2), features that can deliver the best corrosion resistance.

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Preparation and characterization of nickel–cobalt-diamond electro-composites by sediment co-deposition

Cited by 64 publications

References 19 publications

Effect of Surfactants on the Electrodeposition of Ni-SiC Composites

Effect of Surfactants on the Electrodeposition of Ni-SiC Composites

Synthesis and characterization of nickel–diamond nanocomposite layers

Effect of Rough‐Surfaced Diamond Content on the Microstructure, Tribological Behavior, and Corrosion Resistance of Ni/Diamond Composite Coatings

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