Low, C.T.J., Wills, R.G.A. and Walsh, F.C.
Electrodeposition of composite coatings containing nanoparticles in a metal deposit
Surface and Coatings Technology, . (doi:10.1016/j.surfcoat.2005.11.123).
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Recent literature on the electrodeposition of metallic coatings containing nanosized particles is surveyed. The nanosized particles, suspended in the electrolyte by agitation and/or use of surfactants, can be codeposited with the metal. The inclusion of nanosized particles can give (i) an increased microhardness and corrosion resistance, (ii) modified growth to form a nanocrystalline metal deposit and (iii) a shift in the reduction potential of a metal ion. Many operating parameters influence the quantity of incorporated particles, including current density, bath agitation (or movement of work piece) and electrolyte composition. High incorporation rates of the dispersed particles have been achieved using (i) a high nanoparticle concentration in the electrolyte solution, (ii) smaller sized nanoparticles; (iii) a low concentration of electroactive species, (iv) ultrasonication during deposition and (v) pulsed current techniques. Compositional gradient coatings are possible having a controlled distribution of particles in the metal deposit and the theoretical models used to describe the phenomenon of particle codeposition within a metal deposit are critically considered.
|Digital Object Identifier (DOI):
||electrodeposition techniques (direct current, pulsed direct current, pulsed reverse current), nanosized particles, compositional gradient coatings, codeposition of particles, composite coatings, modelling codeposition, rotating cylinder electrode
||20 Mar 2006
||16 Apr 2017 22:44
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