galvanic couple การใช้

• These zones also act as local galvanic couples, causing local galvanic corrosion.
• Galvanic coupling to less noble alloys and cathodic protection prevent copper ion releases from surface films and therefore reduce biofouling resistance.
• For example, low-cost household batteries typically contain sacrificial anodes work as part of a galvanic couple, promoting corrosion of the anode, while protecting the cathode metal.