Galvanic corrosion (Bimetallic corrosion) inhibiting electrically conductive adhesive
This corrosion is an electrochemical oxidazation reduction process,
which occurs when two dissimilar metals are brought into
electrical contact under high temperature and high humidity condition.
- Electric potential is high.（Ag）→Cathode
- Electric potential is low.（Sn、Ni）→Anode
Anodal metal is corroded.
→Contact resistance increases between Ag and Sn or Ni.