Corrosion and Protection of a Conductive Silver Paste

V. Brusic, G. S. Frankel, J. Roldan, R. Saraf

Research output: Contribution to journalArticle

26 Citations (Scopus)

Abstract

One of the possible uses for a conductive paste is as an adhesive in interconnect technology that could replace PbSn solder. The interconnections are expected to perform under a variety of environmental conditions, and with an applied voltage. Thus knowledge of their corrosion and dissolution resistance is of utmost importance. This is a study of the dissolution and protection of polymer/metal composite films, prepared with a high loading of silver or gold particles. Electrochemical tests were conducted in a droplet of triple-distilled water with or without benzotriazole (BTA) and BTA derivatives. Results indicate that, in spite of some protection obtained by the polymer, silver paste dissolution at high anodic potentials is rapid, reaching values of 10–1 A/cm2, which corresponds to a catastrophic silver removal rate of at least 35.6 nm/s. With a reservoir of azole in the corrosive environment, this rate can be reduced by up to five orders of magnitude. This azole effect greatly reduces the probability of electrolytic silver migration, but the Ag dissolution rate is still higher than the anodic activity shown by Au paste under the same conditions.

Original languageEnglish (US)
Pages (from-to)2591-2594
Number of pages4
JournalJournal of the Electrochemical Society
Volume142
Issue number8
DOIs
StatePublished - Aug 1995

Fingerprint

Ointments
Silver
corrosion
dissolving
Dissolution
silver
azoles
Corrosion
Azoles
Polymers
Caustics
Adhesive pastes
polymers
Composite films
solders
corrosion resistance
Gold
Soldering alloys
adhesives
Adhesives

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Renewable Energy, Sustainability and the Environment
  • Surfaces, Coatings and Films
  • Electrochemistry
  • Materials Chemistry

Cite this

Corrosion and Protection of a Conductive Silver Paste. / Brusic, V.; Frankel, G. S.; Roldan, J.; Saraf, R.

In: Journal of the Electrochemical Society, Vol. 142, No. 8, 08.1995, p. 2591-2594.

Research output: Contribution to journalArticle

Brusic, V. ; Frankel, G. S. ; Roldan, J. ; Saraf, R. / Corrosion and Protection of a Conductive Silver Paste. In: Journal of the Electrochemical Society. 1995 ; Vol. 142, No. 8. pp. 2591-2594.
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