Part one of term paper
One method used to prevent rust, is to insulate the metal from moisture and oxygen by covering it with protective chemical layers or paint. This method is effective as long as the protective surface is not damaged, for example, stone chips, scratches, abrasions in the joints. In real terms this is not possible and where damage occurs, no mat ...

Part two of term paper
... the free electrons, causing the metal to be at a lower potential difference, theoretically slowing rust formation. There are a number of major problems with Capacitive Coupling for vehicles. Firstly, if there are stone chips or cracks in the paint, the dielectric is broken and so the charge is lost. So you need to make sure that there is no bare metal, chips or cracks on the vehicle, which is impractical. Another problem is that it is almost impossible to hold a charge (potential difference) on a sh ...