Effect of pulse electrodeposition parameters on the properties of Ni/nano-SiC composites

Gyftou, P; Pavlatou, EA; Spyrellis, N

dc.contributor.author	Gyftou, P	en
dc.contributor.author	Pavlatou, EA	en
dc.contributor.author	Spyrellis, N	en
dc.date.accessioned	2014-03-01T01:28:12Z
dc.date.available	2014-03-01T01:28:12Z
dc.date.issued	2008	en
dc.identifier.issn	0169-4332	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/18763
dc.subject	Composite	en
dc.subject	Microhardness	en
dc.subject	Nickel electrodeposition	en
dc.subject	Preferred orientation	en
dc.subject	Pulse plating	en
dc.subject	Silicon carbide	en
dc.subject.classification	Chemistry, Physical	en
dc.subject.classification	Materials Science, Coatings & Films	en
dc.subject.classification	Physics, Applied	en
dc.subject.classification	Physics, Condensed Matter	en
dc.subject.other	Crystal orientation	en
dc.subject.other	Crystallite size	en
dc.subject.other	Electrodeposition	en
dc.subject.other	Microhardness	en
dc.subject.other	Nickel	en
dc.subject.other	Parameter estimation	en
dc.subject.other	Silicon carbide	en
dc.subject.other	Preferred orientation	en
dc.subject.other	Pulse electrodeposition	en
dc.subject.other	Pulse plating	en
dc.subject.other	Structural defects	en
dc.subject.other	Metallic matrix composites	en
dc.title	Effect of pulse electrodeposition parameters on the properties of Ni/nano-SiC composites	en
heal.type	journalArticle	en
heal.identifier.primary	10.1016/j.apsusc.2008.03.151	en
heal.identifier.secondary	http://dx.doi.org/10.1016/j.apsusc.2008.03.151	en
heal.language	English	en
heal.publicationDate	2008	en
heal.abstract	Pure nickel 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. It has been proved that composite electrodeposits prepared under pulse plating conditions exhibited higher incorporation percentages than those obtained under direct plating conditions, especially at low duty cycles. The study of the textural perfection of the deposits revealed that the presence of nano-particles led to the worsening of the quality of the observed [1 0 0] preferred orientation. Composites with high concentration of embedded particles exhibited a mixed crystal orientation through [1 0 0] and [2 1 1] axes. The embedding SiC nano-particles in the metallic matrix by an intra-crystalline mechanism resulted in the production of composite deposits with smaller crystallite sizes and more structural defects than those of pure Ni deposits. A dispersion-hardening effect was revealed for composite coatings independently from applied current conditions. Pulse electrodeposition significantly improved the hardness of the Ni/SiC composite deposits, mainly at low duty cycle and frequency of imposed current pulses. (C) 2008 Elsevier B.V. All rights reserved.	en
heal.publisher	ELSEVIER SCIENCE BV	en
heal.journalName	Applied Surface Science	en
dc.identifier.doi	10.1016/j.apsusc.2008.03.151	en
dc.identifier.isi	ISI:000256815000041	en
dc.identifier.volume	254	en
dc.identifier.issue	18	en
dc.identifier.spage	5910	en
dc.identifier.epage	5916	en