Corrosion phenomenon. Corrosion is the process of destroying metals due to the chemical or physico-chemical influence of the environment. The word corrosion comes from the Latin "corrosus”, which means "bitten” or "eaten gradually”. Corrosion processes go on everywhere, where we are dealing with metals, they represent the natural tendency of the metal to return to its original state, i.e.. to the oxide form in which it occurs in ores. The corrosion process is undesirable in the storage of finished metal products, because it destroys the product and makes it unusable. Therefore, a wide range of measures are used, which, by preventing this process, protect products against damage due to corrosion. To protect the metal against corrosion, measures are applied, which, due to close contact with the metal surface, protect it against aggressive factors, like for example. moisture, aggressive gases and salt spray. These agents act as an impenetrable barrier to aggressive media or change the nature of the metal surface when adsorbed on it or forming oxides.. To protect metal products during storage and transport, a certain group of protective measures is used, known as temporary protection measures.. They have this in common, that due to the necessity to use the products after storage or transport, they must be easily removed with a solvent or removed by peeling off.