Blog 19 2/8/11 Galvanic Corrosion

This is similar to regular 1 metal corrosion.Though this is useful in the way that the concepts of batteries are based on this, it is harmful because it can cause harm to structures. For instance, if an aluminum bridge with steel bolts, is exposed to rain, then the aluminum structure of the bridge will corrode because it gives off more ions than steel does. The anode gives the steel the ions, because of the electrochemical reaction, before the reaction, there is no anode or cathode.