Effect of 1,5-di(prop-2-ynyl)-1H-pyrazolo[3,4-d]pyrimidine-4(5H)-thione on
inhibition of mild steel corrosion in 1M HCl

Y. El Ouadi; H. Elmsellem; M. El fal; N. K. Sebbar; A. Bouyanzer; R. Rmili; E. M.
Essassi; B. El Mahi; L. Majidi; B. Hammouti

Abstract

Effect of 1,5-di(prop-2-ynyl)-1H-pyrazolo[3,4-d]pyrimidine-4(5H)-thione on inhibition of mild steel corrosion in 1M HCl

Author(s): Y. El Ouadi, H. Elmsellem, M. El fal, N. K. Sebbar, A. Bouyanzer, R. Rmili, E. M. Essassi, B. El Mahi, L. Majidi and B. Hammouti

The effect of addition of 1,5-di(prop-2-ynyl)-1H-pyrazolo[3,4-d]pyrimidine-4(5H)-thione (P1) on the corrosion of steel in hydrochloric acid 1M has been studied by weight loss measurements, potentiodynamic and EIS measurements. The corrosion rates of the steel decrease with the increase of the inhibitor concentration, while the inhibition efficiencies increase. The addition of 1,5-di(prop-2-ynyl)-1H-pyrazolo[3,4-d]pyrimidine-4(5H)-thione (P1) enhances the inhibition efficiency considerably. The presence of this inhibitor increases the degree of surface coverage. E (%) obtained from the various methods is in good agreement. Polarisation measurements show also that the 1,5-di(prop-2-ynyl)-1H-pyrazolo[3,4-d]pyrimidine-4(5H)-thione act as mixed type inhibitor.

PDF

Select your language of interest to view the total content in your interested language