ENHANCEMENT OF CORROSION INHIBITION ACTION OF THIOUREA BY AROMATIC AMINES (original) (raw)

Industrialization and modernization has made a strong demand of steel and their maintenance for a strong infrastructure for every country in the race of survival, stabilization, growth and competition. Atmospheric corrosion may cause some dangerous and expensive damage to everything from automobiles, home appliances, water systems to pipelines, bridges and public buildings like other natural hazards such as earthquakes or several weather disturbances. Atmospheric corrosion can aggressively accelerate the rate of degradation of steel during their manufacturing, processing, storage and transportation. In these cases, traditional methods to prevent corrosion are not suitable which provide scope of vapour phase corrosion inhibitors in industries, defense and daily life. Synergistic effect of Thiourea was tested for mild steel in different aggressive atmospheric conditions with aromatic amines (N-Ethylaniline, 1-Benzylimidazole and 5-Aminotetrazole) by Vapour pressure determination test, Weight loss test, Salt spray test, Sulphur dioxide test, Metallurgical research microcopy and Scanning electron microcopy at 500C. Keywords: Synergistic effect, Salt spray test, Vapour phase corrosion inhibitor, Weight loss test, Sulphurdioxide test, Aromatic amine.