Nickel matrix composite electrocoatings as stationary electrical contacts

Dervos, CT; Kollia, C; Psarrou, S; Vassiliou, P; Spyrellis, N

dc.contributor.author	Dervos, CT	en
dc.contributor.author	Kollia, C	en
dc.contributor.author	Psarrou, S	en
dc.contributor.author	Vassiliou, P	en
dc.contributor.author	Spyrellis, N	en
dc.date.accessioned	2014-03-01T02:41:33Z
dc.date.available	2014-03-01T02:41:33Z
dc.date.issued	1998	en
dc.identifier.issn	03614395	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/30526
dc.subject	Contact Resistance	en
dc.subject	Electrical Properties	en
dc.subject	Nickel	en
dc.subject	Transport Process	en
dc.subject	Direct Current	en
dc.subject	Phase Transition	en
dc.subject.other	Electric resistance measurement	en
dc.subject.other	Electrodeposition	en
dc.subject.other	Electrodes	en
dc.subject.other	Fretting corrosion	en
dc.subject.other	Interfaces (materials)	en
dc.subject.other	Metallic matrix composites	en
dc.subject.other	Nickel compounds	en
dc.subject.other	Scanning electron microscopy	en
dc.subject.other	Temperature measurement	en
dc.subject.other	X ray diffraction analysis	en
dc.subject.other	Metal electrocoating	en
dc.subject.other	Nickel matrix electrodeposits	en
dc.subject.other	Polymeric microcapsules	en
dc.subject.other	Electric contacts	en
dc.title	Nickel matrix composite electrocoatings as stationary electrical contacts	en
heal.type	conferenceItem	en
heal.identifier.primary	10.1109/HOLM.1998.722440	en
heal.identifier.secondary	http://dx.doi.org/10.1109/HOLM.1998.722440	en
heal.publicationDate	1998	en
heal.abstract	The electrical contact characteristics are dominated by the interfacial transport processes, thermal generation and dissipation rates, mechanical fatigue during the operations, material phase transitions and migration effects as a result of transient phenomena during arcing. The work presented in this paper explores the possibility of using as electrical contacts composite nickel matrix electrodeposits prepared under direct current (DC) and pulse current (PC) conditions. The codeposition of liquid-containing microcapsules (μcaps) along with the metal matrix from electrolytic baths leads to the development of a totally new type of material, the liquid-containing metal electrocoating with prespecified properties. The incorporation of oil-containing polymeric wall μcaps in the nickel matrix ensures a self-lubrication - cooling action during fretting or transient operation. The electrical properties of composite nickel electrodeposits have been investigated for possible utilization as electrical contacts. Different preparation conditions have been employed. Their contact resistance and interfacial temperature for a great number of operation cycles have been monitored under constant axial contact force using low current excitations. SEM and XRD analysis were applied for the inter-electrode surfaces towards investigating their structural characteristics.	en
heal.publisher	IEEE, Piscataway, NJ, United States	en
heal.journalName	Electrical Contacts, Proceedings of the Annual Holm Conference on Electrical Contacts	en
dc.identifier.doi	10.1109/HOLM.1998.722440	en
dc.identifier.spage	151	en
dc.identifier.epage	158	en