Corrosion processes are responsible for numerous losses mainly in the industrial scope. It is clear that the best way to combat it is prevention. Among the various methods to avoid or prevent destruction or degradation of metal surface, the corrosion inhibitor is one of the best know methods of corrosion protection and one of the most useful on the industry. According to the chemical nature, the corrosion inhibitors can be divided into organic or inorganic. Organic corrosion inhibitors mainly include amines, phosphonates, benzotriazole and other. Organic corrosion inhibitors are widely used in water treatment, metal treatment and other fields to inhibit corrosion.