A new organotellurium compound based on N-substituted tetrazole as anti-corrosion for C-steel in 1 m HCl solution

Abstract EN

The present study includes a study and evaluation of the effect of a new organotellurium compound derived from N-butyl substituted tetrazole compensated namely: di (1-butyl tetrazole-5-yl) tellurium dibromide (Tz) which was prepared in a previous study as a anti-corrosion for the carbon steel alloys in the acid medium 1 M of hydrochloric acid.

The work involved evaluating the inhibitor at various temperatures 303, 313 and 323 K for specific concentrations of inhibitor at 5, 10 and 30 ppm.

This study was used the supplementary method of polarization curves or the so-called Supplementary Method of Polarization Curves / Tafel plots, to calculate the corrosion variables (corrosion voltage and corrosion current density (.

It was observed that as anti-corrosion concentrations were increased as the efficiency of anti-corrosion will be increased.

The prepared compound Tz gave a good inhibition efficiency 87% with 30 ppm at 303 K.

It was also found that the activation energies are higher with the presence of inhibitor than their ence, especially with the presence of inhibitor Tz in the acid medium (1 M), due to decrease of the corrosion current, so the corrosion rate of the carbon steel alloy will decrease while the charge resistance of the charge will increase.