Journal ArticleDOI
Hardening effect induced by incorporation of SiC particles in nickel electrodeposits
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TLDR
In this article, the effect of the particle size, codeposition percentage of SiC and type of imposed current on microhardness as well as on the microstructure of the electrodeposits were investigated.Abstract:
Pure Ni and nickel matrix composite electrocoatings containing micron- and nano-SiC particles (1 μm and 20 nm respectively) were produced under direct and pulse current conditions from an additive-free Watts type bath. The effect of the particle size, codeposition percentage of SiC and type of imposed current on the microhardness as well as on the microstructure of the electrodeposits were investigated. Ni/SiC composite deposits prepared under either direct or pulse current conditions exhibited a considerable strengthening effect with respect to pure Ni coatings. The improved hardness of composite coatings was associated to specific structural modifications of Ni crystallites provoked by the adsorption of H+ on the surface of SiC particles, thus leading to a (211) texture mode of Ni crystal growth. Pulse electrodeposition significantly improved the hardness of the Ni/SiC composite coatings, especially at low duty cycles, in which grain refinement and higher SiC incorporation (vol. %) was achieved. The enhanced hardness of Ni/nano-SiC deposits, as compared to Ni/micron-SiC composites, was attributed to the increasing values of the number density of embedded SiC particles in the nickel matrix with decreasing particle size. In addition, the observed hardening effects of the SiC particles might be associated to the different embedding mechanisms of the particles, which could be characterized as inter-crystalline for micron-SiC and partially intra-crystalline for nano-SiC particles.read more
Citations
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Journal ArticleDOI
Nanodiamonds suppress the growth of lithium dendrites.
Xin-Bing Cheng,Meng-Qiang Zhao,Chi Chen,Chi Chen,Amanda Pentecost,Kathleen Maleski,Tyler S. Mathis,Xue-Qiang Zhang,Qiang Zhang,Jianjun Jiang,Yury Gogotsi +10 more
TL;DR: The authors show that nanodiamonds serve as an electrolyte additive to co-deposit with lithium metal and suppress the formation of dendrites, affording a promising route to suppress lithium dendrite growth in lithium metal-based batteries.
Journal ArticleDOI
Effect of pulse electrodeposition parameters on the properties of Ni/nano-SiC composites
TL;DR: In this paper, Ni and nickel matrix composite deposits containing nano-SiC particles were produced under both direct and pulse current conditions from an additive-free nickel Watts' type bath, and the study of the textural perfection of the deposits revealed that the presence of nano-particles led to the worsening of the observed [1/0/0] preferred orientation.
Journal ArticleDOI
Effect of electrodeposition conditions and reinforcement content on microstructure and tribological properties of nickel composite coatings
Tushar Borkar,Sandip P. Harimkar +1 more
TL;DR: In this article, the effect of deposition conditions on the evolution of surface microstructure, crystallographic microtexture, microhardness, and sliding wear behavior of pure nickel and nickel composite coatings are presented.
Journal ArticleDOI
Characterization of electrodeposited Ni–TiO2 nanocomposite coatings
Denny Thiemig,Andreas Bund +1 more
TL;DR: In this article, the surface morphology and microstructure of the nickel matrix was significantly altered due to the presence of titania nanoparticles, and the Vickers microhardness showed a tendency to increase with the amount of particle incorporation.
Journal ArticleDOI
Investigation on the corrosion and oxidation resistance of Ni–Al2O3 nano-composite coatings prepared by sediment co-deposition
TL;DR: In this article, sediment co-deposition (SCD) technique from a Watt's type electrolyte containing nano-Al2O3 particles was used to improve the corrosion and high temperature oxidation resistance of composite coatings.
References
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Journal ArticleDOI
Electrochemical codeposition of inert particles in a metallic matrix
Arjan Hovestad,Ljj Jos Janssen +1 more
TL;DR: A survey on electrochemical codeposition of inert particles in a metallic matrix is given in this article, where many experimental factors were found to influence the codepposition process, which led to some understanding of the mechanism.
Journal ArticleDOI
Electrodeposition and sliding wear resistance of nickel composite coatings containing micron and submicron SiC particles
TL;DR: In this article, Ni-SiC composite coatings containing 4−5 vol.% submicron SiC particles were evaluated in uni-and bi-directional sliding tests against corundum balls.
Journal ArticleDOI
Mechanical properties of nickel silicon carbide nanocomposites
TL;DR: In this paper, the tensile and yield strengths of the nanocomposite material with SiC content less than 2 vol.% were higher than those for pure nanocrystalline Ni of comparable grain size.
Journal ArticleDOI
Wear corrosion properties of nano-structured SiC–nickel composite coatings obtained by electroplating
TL;DR: In this article, a comparative wear corrosion study of pure nickel and Ni-SiC nano-structured composite coating was carried out on an apparatus constructed in the laboratory of Electrochemistry, Department of Materials Engineering of Trento University.
Journal ArticleDOI
Electrodeposition of composites: an expanding subject in electrochemical materials science
TL;DR: In this paper, a review of the literature on composite electrodeposition is presented, with special attention to new application fields which are being developed, besides the well-established coating preparation.