A study of some new organic inhibitors on corrosion of N‐80 and mild steel in hydrochloric acid

Abstract

Two new organic inhibitors, namely dibenzylidene acetone (DBA) and Di‐N‐dimethylaminobenzylidene acetone (DDABA), have been synthesized in the laboratory and their inhibiting action has been evaluated on corrosion of N‐80 steel and mild steel (MS) in HCI by weight loss technique. These compounds exhibited the inhibition efficiency (IE) of 94.4 per cent and 56.5 per cent for mild steel, whereas for N‐80 steel these compounds showed inhibition efficiency (IE) of 99.7 per cent and 73.8 per cent. The potendiodynamic polarization studies revealed that both the compounds are mixed type inhibitors. The noteworthy feature of the investigation is that inhibition efficiency (IE) of both compounds increased on addition of potassium iodide (KI) due to synergism. Both the compounds have been found to inhibit corrosion by an adsorption mechanism.

Citation

Suroor Athar, S.M., Ali, H. and Quraishi, M.A. (2001), "A study of some new organic inhibitors on corrosion of N‐80 and mild steel in hydrochloric acid", Anti-Corrosion Methods and Materials, Vol. 48 No. 4, pp. 251-255. https://doi.org/10.1108/EUM0000000005633