Environmental effects on the electrical performance of silver contact - substrate systems

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dc.contributor.author Dervos Constantine, T en
dc.contributor.author Vassiliou, Panayota en
dc.date.accessioned 2014-03-01T02:41:32Z
dc.date.available 2014-03-01T02:41:32Z
dc.date.issued 1998 en
dc.identifier.issn 03614395 en
dc.identifier.uri https://dspace.lib.ntua.gr/xmlui/handle/123456789/30518
dc.subject Copper en
dc.subject Design Rules en
dc.subject Energy Storage en
dc.subject Environmental Effect en
dc.subject Scanning Electron Microscopy en
dc.subject.other Air pollution en
dc.subject.other Corrosion en
dc.subject.other Degradation en
dc.subject.other Electrochemistry en
dc.subject.other Electron microscopy en
dc.subject.other Environmental impact en
dc.subject.other Erosion en
dc.subject.other Silver en
dc.subject.other Sodium chloride en
dc.subject.other Sulfur dioxide en
dc.subject.other Surfaces en
dc.subject.other Welds en
dc.subject.other Electrochemical degradation en
dc.subject.other Energy dispersive analysis en
dc.subject.other Silver metal contacts en
dc.subject.other Synergy effects en
dc.subject.other Electric contacts en
dc.title Environmental effects on the electrical performance of silver contact - substrate systems en
heal.type conferenceItem en
heal.identifier.primary 10.1109/HOLM.1998.722454 en
heal.identifier.secondary http://dx.doi.org/10.1109/HOLM.1998.722454 en
heal.publicationDate 1998 en
heal.abstract In this work, commercial silver metal contacts welded on top of brass or silver plated copper substrates have been exposed to air rich in SO2 and air rich in NaCl. Scanning Electron Microscopy and Energy Dispersive Analysis of the exposed contact surfaces were performed to identify the corrosion byproducts on top of the silver contacts, substrates, 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 under the plating of the substrate or from the welding materials. Electrical characterization of the contacting materials was based upon 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 heavy pollutant operating environments. 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.1998.722454 en
dc.identifier.spage 256 en
dc.identifier.epage 268 en

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