I'd like to think that things like this don't happen, but I've heard my share of horror stories. A fluid analysis can save you pain, embarassment, and in some cases your job. But if you think about, there' really no excuse for not having one done considering the impact that a material of construction decision can have. With this in mind, I thought that it may be a good idea to review some of the most basic forms of corrosion. Uniform Attack Uniform attack is a form of electrochemical corrosion that occurs with equal intensity of the entire surface of the metal.
Iron rusts when exposed to air and water, and silver tarnishes due to exposure to air.
Galvanic Corrosion Galvanic corrosion is a little more difficult to keep track of in the industrial world. You'll notice below that simply adding a screw of the wrong material can have severe consequences. Galvanic corrosion occurs when two metals having different composition are electrically coupled in the presence of an electrolyte. The more reactive metal will experience severe corrosion while the more noble metal will be quite well protected. Perhaps the most infamous examples of this type of corrosion are combinations such as steel and brass or copper and steel.