Galvanic Corrosion

Here is a good paper written by Roger Francis on “Galvanic Corrosion of High Alloy Stainless Steels in Sea Water

The coupling of dissimilar metals in conducting, corrosive solutions such as sea water, can lead to the accelerated corrosion of one metal and protection of the other more noble metal1. The extent of corrosion depends on the area ratio of the two metals, the difference in potential, and the cathodic efficiency of the more noble metal….