Implications of positive ion layer formation across highly injecting metal contacts: current instabilities and electrostatic repulsion

Dervos, T

dc.contributor.author	Dervos, T	en
dc.date.accessioned	2014-03-01T02:41:05Z
dc.date.available	2014-03-01T02:41:05Z
dc.date.issued	1995	en
dc.identifier.issn	03614395	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/30362
dc.subject	Contact Resistance	en
dc.subject	Field Emission	en
dc.subject.other	Electric charge	en
dc.subject.other	Electric conductivity	en
dc.subject.other	Electric currents	en
dc.subject.other	Electric waveforms	en
dc.subject.other	Electrodes	en
dc.subject.other	Electron emission	en
dc.subject.other	Electrostatics	en
dc.subject.other	Interfaces (materials)	en
dc.subject.other	Ions	en
dc.subject.other	Monolayers	en
dc.subject.other	Stability	en
dc.subject.other	Surface phenomena	en
dc.subject.other	Current instability	en
dc.subject.other	Electronic field emission	en
dc.subject.other	Electrostatic repulsion	en
dc.subject.other	Hysteresis effects	en
dc.subject.other	Interfacial cavity	en
dc.subject.other	Ion neutralization	en
dc.subject.other	Metal contacts	en
dc.subject.other	Positive ion layer	en
dc.subject.other	Transient current	en
dc.subject.other	Voltage waveforms	en
dc.subject.other	Electric contacts	en
dc.title	Implications of positive ion layer formation across highly injecting metal contacts: current instabilities and electrostatic repulsion	en
heal.type	conferenceItem	en
heal.identifier.primary	10.1109/HOLM.1995.482869	en
heal.identifier.secondary	http://dx.doi.org/10.1109/HOLM.1995.482869	en
heal.publicationDate	1995	en
heal.abstract	This paper is a theoretical and experimental investigation of the implications brought in the crossing resistance of highly injecting metal contacts, whenever monolayers of positive ions are formed over the cathode. The major ion neutralization processes for a metal+oxide+gas interface are theoretically discussed since they principally determine whether fixed positive ion monolayers can or cannot form. The formation of positive ion monolayers on cathode surfaces will reduce the effective barriers required for electronic field emission. Practical implications may appear as additional current components, current instabilities and blow-open forces between the joints. Current instabilities have been experimentally investigated for a variety of components operating in the air or in high vacuum environment. The obtained results clearly demonstrate non-linear conductivity phenomena and hysteresis effects between the interfacial field and the injected charge in the examined structures. The evolution of blow-open forces between highly injecting metals has been investigated by analyzing transient current and voltage waveforms during spontaneous contact opening at reduced clamping forces. The importance of interfacial cavities and screening charges between the electrodes has been investigated as they may determine the over-current values during the spontaneous contact opening process. Fundamental aspects in controlling the above effects on heavy duty industrial components are pointed out.	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.1995.482869	en
dc.identifier.spage	175	en
dc.identifier.epage	185	en