Corrosion effects on the electrical performance of silver metal contacts

Vassiliou, P; Dervos, CT

dc.contributor.author	Vassiliou, P	en
dc.contributor.author	Dervos, CT	en
dc.date.accessioned	2014-03-01T01:14:29Z
dc.date.available	2014-03-01T01:14:29Z
dc.date.issued	1999	en
dc.identifier.issn	0003-5599	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/13098
dc.subject	Corrosion	en
dc.subject	Metal contacts	en
dc.subject	Silver	en
dc.subject.classification	Metallurgy & Metallurgical Engineering	en
dc.subject.other	Adhesion	en
dc.subject.other	Brass	en
dc.subject.other	Corrosion	en
dc.subject.other	Electric accidents	en
dc.subject.other	Energy dispersive spectroscopy	en
dc.subject.other	Energy storage	en
dc.subject.other	Scanning electron microscopy	en
dc.subject.other	Silver	en
dc.subject.other	Sodium chloride	en
dc.subject.other	Substrates	en
dc.subject.other	Welding	en
dc.subject.other	Current switching cycle tests	en
dc.subject.other	Temperature overheat tests	en
dc.subject.other	Electric contacts	en
dc.subject.other	atmospheric corrosion	en
dc.subject.other	contact	en
dc.subject.other	corrosion	en
dc.subject.other	electricity	en
dc.subject.other	salinity	en
dc.subject.other	silver	en
dc.title	Corrosion effects on the electrical performance of silver metal contacts	en
heal.type	journalArticle	en
heal.identifier.primary	10.1108/00035599910263152	en
heal.identifier.secondary	http://dx.doi.org/10.1108/00035599910263152	en
heal.language	English	en
heal.publicationDate	1999	en
heal.abstract	In this work, commercial silver metal contacts welded on top of silver plated brass or brass substrates have been exposed to air rich in NaCl. Scanning electron microscopy and energy dispersive analysis of the exposed contact surfaces were performed to identify the corrosion by-products on top of the silver contacts, suspending wafers, and welding materials. Surface corrosion products were mainly found to consist of small spherules of Cu-Zn or Ag-Cu compounds which cover the surface of the contact proper with low adhesion properties. They mainly originate from the underplating wafer or welding materials. Electrical characterization of the contacting materials was based on dc temperature overheat tests, current switching cycle tests, and energy storage during ac current excitation. The experimental results display that the operating environment is indeed a very significant parameter determining the overall performance of the electrical contacts. New design rules as well as material selection properties may have to be systematically considered to allow for electrochemical induced degradation in saline operating environments.In this work, commercial silver metal contacts welded on top of silver plated brass or brass substrates have been exposed to air rich in NaCl. Scanning electron microscopy and energy dispersive analysis of the exposed contact surfaces were performed to identify the corrosion by-products on top of the silver contacts, suspending wafers, and welding materials. Surface corrosion products were mainly found to consist of small spherules of Cu-Zn or Ag-Cu compounds which cover the surface of the contact proper with low adhesion properties. They mainly originate from the underplating wafer or welding materials. Electrical characterization of the contacting materials was based on dc temperature overheat tests, current switching cycle tests, and energy storage during ac current excitation. The experimental results display that the operating environment is indeed a very significant parameter determining the overall performance of the electrical contacts. New design rules as well as material selection properties may have to be systematically considered to allow for electrochemical induced degradation in saline operating environments.	en
heal.publisher	MCB Univ Press Ltd, Bradford, United Kingdom	en
heal.journalName	Anti-Corrosion Methods and Materials	en
dc.identifier.doi	10.1108/00035599910263152	en
dc.identifier.isi	ISI:000080026600003	en
dc.identifier.volume	46	en
dc.identifier.issue	2	en
dc.identifier.spage	85	en
dc.identifier.epage	94	en