Effect of ion neutralization processes on interfacial energy of stationary contacts

Dervos Constantine, T; Michaelides Joseph, M

dc.contributor.author	Dervos Constantine, T	en
dc.contributor.author	Michaelides Joseph, M	en
dc.date.accessioned	2014-03-01T02:48:31Z
dc.date.available	2014-03-01T02:48:31Z
dc.date.issued	1997	en
dc.identifier.issn	03614395	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/33878
dc.relation.uri	http://www.scopus.com/inward/record.url?eid=2-s2.0-0031332339&partnerID=40&md5=a9674095fee5df20d04fd82f4a878a9a	en
dc.subject.other	Charge transfer	en
dc.subject.other	Composition effects	en
dc.subject.other	Electric currents	en
dc.subject.other	Electric variables measurement	en
dc.subject.other	Fluorine compounds	en
dc.subject.other	Interfaces (materials)	en
dc.subject.other	Interfacial energy	en
dc.subject.other	Ions	en
dc.subject.other	Nitrogen	en
dc.subject.other	Oxygen	en
dc.subject.other	Silver alloys	en
dc.subject.other	Surface structure	en
dc.subject.other	Ion neutralization	en
dc.subject.other	Sulfur hexafluoride	en
dc.subject.other	Electric contacts	en
dc.title	Effect of ion neutralization processes on interfacial energy of stationary contacts	en
heal.type	conferenceItem	en
heal.publicationDate	1997	en
heal.abstract	Practical utilization of direct measurements of the electrical energy stored at the interface of mechanically contacted metals has been used as a tool to demonstrate experimentally the effect of ion neutralization processes at the interface. Due to the presence of surface asperities, interfacial cavities filled with the gas from the surrounding space may play an important role in charge transport processes, since they provide additional current paths between the non ideally contacted spots of current carrying metallic interfaces. Measurements of the electrical energy stored at the interface were performed in stationary OFHC and silver based alloy contacts in a high vacuum environment (total pressure below 10-5 mbar). The composition of the surrounding space could be determined in citu by employing quadrupole mass spectrometry. The effect of small quantities of nitrogen, oxygen or SF6 on the overall interfacial electrical energy has been investigated for the case of a contact operated at a constant current mode. The obtained experimental results demonstrate convincingly variations of the interfacial electrical energy depending on the composition of the surrounding space and the important role of the non ohmic transport processes across metallic interfaces operating under high charge injection rates.	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.spage	165	en
dc.identifier.epage	174	en