Where’s the proof? Open the sliding doors of some 3 to 5 year old mini-vans and you’ll see the evidence! Also, consider the amount of bombardment the under-body of a vehicle endures. These areas are precisely where rust starts to form on a vehicle in its 3rd or 5th year on-ward. Every time a piece of sheet metal is cut or welded in the manufacturing process, the galvanizing protection is lost thus creating a rust-prone area.
Galvanizing is a process whereby steel is dipped into a liquid metal (zinc), thus forming a barrier between the steel, moisture and air. The steel that is used in vehicles is galvanized which does provide protection. Where’s the proof? Leave the cover off your barbeque for a couple of seasons left exposed to the environment and you’ll see the evidence! Even stainless steel barbeques have regular steel used in the support frames and that’s where you’ll find the brown stuff start to form. The chemical process that occurs is called oxidation.
Steel contains iron and when exposed to air and moisture, rust will occur. Thus, even in nature, teamwork results in collective laziness.Rust is nature’s way of returning a man-made product such as steel back to its natural state - iron. Today's Thought: When birds fly in the right formation, they need only exert half the effort. Unless there is a way to separate layers of paint and have them interact I find it hard to believe that a black box with a flashing light will do anything more than scare away the elephants. The electrolysis can't go away it can just be redirected to some place easier to "rust", hence the sacrificial element. Another missing piece is that you don't get something for nothing. The same holds true for RF interference reduction (which is my real field). On a car it is much more difficult since joints and hinges do not have inherently good grounds. On a boat that is easy with cables connected to every part that is exposed to the water. The key to a cathodic system working is that EVERY metal member must be bonded together. Acctually I have worked with cathodic systems for many years in the marine industry where they ALL rely on sacrificial elements.
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