Conductive silver-epoxy pastes: characteristics of alternative formulations

Conductive silver-epoxy formulations containing 52 and 62 wt% silver flakes have been prepared and exposed to corrosive environments. The samples were then analyzed by a variety of techniques and the results compared with previous data on pure silver and on a 72 wt% formulation. The corrosive sulfur...

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Published inJournal of materials science Vol. 19; no. 10; pp. 3281 - 3286
Main Authors FRANEY, J. P, GRAEDEL, T. E, GUALTIERI, G. J, KAMMLOTT, G. W, MALM, D. L, SHARPE, L. H, TIERNEY, V
Format Journal Article
LanguageEnglish
Published Heidelberg Springer 01.10.1984
Subjects
Applied sciences
Exact sciences and technology
Forms of application and semi-finished materials
Polymer industry, paints, wood
Reinforced plastics
Technology of polymers
Corrosion resistance
Silver
Electrical conductivity
Formulation
Morphology
Epoxy resin
Reinforced plastics
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Summary:Conductive silver-epoxy formulations containing 52 and 62 wt% silver flakes have been prepared and exposed to corrosive environments. The samples were then analyzed by a variety of techniques and the results compared with previous data on pure silver and on a 72 wt% formulation. The corrosive sulfur gas diffused readily into the formulations to form silver sulfide at the surface of the flakes. Contact resistance values initially decreased with time, apparently as a result of softening and increased conductivity of the formulations due to water vapor adsorption. Contact resistance values were lower for high humidity exposure in the presence of H sub(2)S than in its absence. The results indicate that low contact resistances and stable electrical performance are not reached within reasonable field lifetimes for these formulations.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:0022-2461
1573-4803
DOI:10.1007/BF00549816