Pulse electrodeposition of Ni-P matrix composite coatings reinforced by SiC particles

Zoikis-Karathanasis, A; Pavlatou, EA; Spyrellis, N

dc.contributor.author	Zoikis-Karathanasis, A	en
dc.contributor.author	Pavlatou, EA	en
dc.contributor.author	Spyrellis, N	en
dc.date.accessioned	2014-03-01T01:34:22Z
dc.date.available	2014-03-01T01:34:22Z
dc.date.issued	2010	en
dc.identifier.issn	0925-8388	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/20716
dc.subject	Composite coatings	en
dc.subject	Microhardness	en
dc.subject	Nickel-phosphorus alloy	en
dc.subject	Pulse electrodeposition	en
dc.subject	Silicon carbide	en
dc.subject	X-ray diffraction	en
dc.subject.classification	Chemistry, Physical	en
dc.subject.classification	Materials Science, Multidisciplinary	en
dc.subject.classification	Metallurgy & Metallurgical Engineering	en
dc.subject.other	Amorphous matrices	en
dc.subject.other	Amorphous phase	en
dc.subject.other	Codeposition	en
dc.subject.other	Crystalline structure	en
dc.subject.other	Deposited coatings	en
dc.subject.other	Direct current	en
dc.subject.other	Hardness values	en
dc.subject.other	High-frequency pulse	en
dc.subject.other	Hydrodynamic conditions	en
dc.subject.other	Incorporation rates	en
dc.subject.other	Low duty-cycles	en
dc.subject.other	Nickel-phosphorus alloys	en
dc.subject.other	P-matrices	en
dc.subject.other	Pulse currents	en
dc.subject.other	Pulse electrodeposition	en
dc.subject.other	Pulse plating	en
dc.subject.other	SiC particles	en
dc.subject.other	Thermal treatment	en
dc.subject.other	Watts type bath	en
dc.subject.other	Additives	en
dc.subject.other	Crystalline materials	en
dc.subject.other	Deposits	en
dc.subject.other	Diffraction	en
dc.subject.other	Electroplating	en
dc.subject.other	Heat treatment	en
dc.subject.other	Microhardness	en
dc.subject.other	Nickel alloys	en
dc.subject.other	Nickel coatings	en
dc.subject.other	Particle reinforced composites	en
dc.subject.other	Phosphorus	en
dc.subject.other	Silicon alloys	en
dc.subject.other	Silicon carbide	en
dc.subject.other	Structural analysis	en
dc.subject.other	X ray diffraction	en
dc.subject.other	Composite coatings	en
dc.title	Pulse electrodeposition of Ni-P matrix composite coatings reinforced by SiC particles	en
heal.type	journalArticle	en
heal.identifier.primary	10.1016/j.jallcom.2010.01.057	en
heal.identifier.secondary	http://dx.doi.org/10.1016/j.jallcom.2010.01.057	en
heal.language	English	en
heal.publicationDate	2010	en
heal.abstract	Ni-P/SiC composite coatings were produced under both direct and extended pulse current conditions from an additive-free modified Watts type bath at various hydrodynamic conditions. Structural analysis revealed an amorphous phase of Ni-P matrix for the majority of coatings, except for those prepared under low duty cycle and high frequency pulses that exhibited mainly the crystalline Ni12P5 compound. The practice of pulse plating regime led to composite coatings with higher incorporation rate of SiC particles (up to 22 wt.%) and microhardness values (up to 7.2 GPa) than those produced under direct current conditions. It has been revealed that increased micron-SiC codeposition percentage resulted in decrease of P content in the amorphous matrix and increase of the deposits' hardness values. After annealing at 400 °C the amorphous matrix was crystallized to phases of Ni, Ni2P, and Ni3P, the formation of which depends on the P content. As-plated deposits exhibiting Ni12P5 phase preserved this crystalline structure after thermal treatment. Annealed coatings exhibited almost double values of microhardness relative to those of the as-deposited coatings. © 2010 Elsevier B.V. All rights reserved.	en
heal.publisher	ELSEVIER SCIENCE SA	en
heal.journalName	Journal of Alloys and Compounds	en
dc.identifier.doi	10.1016/j.jallcom.2010.01.057	en
dc.identifier.isi	ISI:000276532300078	en
dc.identifier.volume	494	en
dc.identifier.issue	1-2	en
dc.identifier.spage	396	en
dc.identifier.epage	403	en