Definition and Effect of Corrosion

Corrosion is the one of many problem that we will meet when using metal element. It has significance effect to make the metal become useless. Corrosion is a reaction when metal has a contact with oxygen. When it happen, the metal form a compound called oxide on the metal surface. The metal become dull and lost it’s luster characteristic.

Metals and its usefulness that have high reactivity level will more fast corrosive than metals with low reactivity level. To restrain the corrosion, there are few things we can do. For example iron ( it is used for make aloi steel) is so easy to corrosive, but it is strong and easy to moudable become variated shape. Iron is suitable to build very big structures, but it have to be protected from corrosion. The way to protect it with painting. Why?

The bridge made from iron and protected from corrosion by painted phosporic acid. The acid will formed a bond with metal iron element and formed a protector to restrain corrosion on the bottom iron. Then the bridge will be protected more with coat paint.

To know more about the damage from corrosion on metal, let’s read the explanation below.

A. Corrosion Effects

When a metal have corrosion, the surface become closed by oxide layer. In a few metal, like alumunium, the layer  adhere on metal and protecting it from corrosion. In another metal, this layer cannot form. In iron and steel, for example, corrosion layer that incrustation (iron oxide) formed. This layer getting loose, it may the bottom metal have corrosion.

Alumunium fast to form the oxide layer on the surface. Alumunium is the ideal material to make food tray, because it won’t be corrosion.

This dteel drums is painted to protect from corrosion, but a little scratch can be the way for moist entering the paint and touch the steel. This id the way for corrosion happen.

B. The Way to Retrain Corrosion

Other than painting, there are the other way to retrain the corrosion, for example Galvanize. This is the methode for protecting steel coated with zinc. Zinc is mmore reactive than steel, so its contact with oxygen first than steel.  Even so the zinc scratch, oxygen in the air continue to react with zinc, not with the steel. Metal zinc and magnesium usually used to protect iron or steel from corrosion, so its usually called metal victim.