Synergistic effect of Cetyltrimethylammoniumbromide with 1, 3-Diaminopropane, 1-Benzylimidazole and 5-Aminotetrazole as vapour phase corrosion inhibitor for mild steel under atmospheric aggressive environments

Industrialization and modernization, in now days, 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 is naturally occurring deterioration phenomenon in environment which 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. Relative humidity, temperature, sulphur dioxide content, hydrogen sulphide content, amount of rain fall, dust and even the position of the exposed metal exhibit marked influence on corrosion behaviour. 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 (VPCI) in industries, defense and daily life. Synergistic effect of Cetyltrimethylammoniumbromide (CTAB) was tested for mild steel in different aggressive atmospheric conditions with 1, 3-Diaminopropane, 1-Benzylimidazole and 5-Aminotetrazole by Weight loss test, Eschke test, Salt spray test and Sulphur dioxide (SO₂) test at 50°C.