Tetrabutyl ammonium iodide, cetyl pyridinium bromide and cetyl trimethyl ammonium bromide as corrosion inhibitors for mild steel in sulphuric acid

摘要

The inhibitive action of tetrabutyl ammonium iodide, cetyl pyridinium bromide and cetyl trimethyl ammonium bromide towards the corrosion of mild steel in sulphuric acid has been investigated by weight loss and polarisation techniques. The percentage inhibition varies with the nature and concentration of the inhibitor, temperature and pH of the medium. The corrosion inhibition is explained by considering adsorption or complex formation by the inhibitors on the corroding mild steel surface.