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Electrodeposition of Ni/SiC composites by pulse electrolysis

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National Technical University of Athens   

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Electrodeposition of Ni/SiC composites by pulse electrolysis (EN)
Spyrellis, N (EN)
Pavlatou, EA (EN)
Stroumbouli, M (EN)
Gyftou, P (EN)
conferenceItem (EN)
2014-03-01T02:42:07Z
2002 (EN)
Nickel matrix composite coatings containing nucron- and nano-sized SiC particles were prepared in order to study the interdependence of the SiC particles embedding and the deposits' mechanical behaviour. SiC particles of two different sizes namely 1 mum and 20 nm, were codeposited with nickel from Watts solutions tinder pulse current conditions. It has been observed that the embedding of SiC particles in the nickel matrix and the pulse current application result in deposits with more uniform particle distribution and better surface morphology than those obtained tinder direct current conditions. The study of the composite deposits revealed that the microhardness is not only increased by the presence and the reduced size of the particles, but also influenced by the current conditions, i.e. duty cycle and pulse frequency. Moreover microhardness of the deposits can be further ameliorated by specific thermal treatment. (EN)
Materials Science, Coatings & Films (EN)
Metallurgy & Metallurgical Engineering (EN)
Heat treatment (EN)
Particle size analysis (EN)
Microhardness (EN)
Electric currents (EN)
Silicon carbide (EN)
Electrolysis (EN)
Metallic matrix composites (EN)
Nickel plating (EN)
Nickel composite electrocoatings (EN)
Electrodeposition (EN)
Nanostructured materials (EN)
Composite electrocoatings (EN)
Pulse plating (EN)
Thermal treatment (EN)
Transactions of the Institute of Metal Finishing (EN)
English
INST METAL FINISHING (EN)
National Technical University of Athens
Digital Library of National Technical University of Athens | Dspace@NTUA
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