The Inhibiting Effects of Alkyl Benzene Sulphonate and the Magnetic Field on Aluminum Corrosion in Acidic Solution

Corrosion inhibition of aluminum (Al) in hydrochloric acid (HCl) by linear alkyl benzene sulphonate (LABS) in the presences and absences of external magnetic field has been studied using weight-loss and hydrogen evolution methods. Magnetic field of 0.1 T was applied. The inhibition action depends on the chemical structure and the concentration of the inhibitor, the concentration of the corrosive medium, the temperature, and the presence of an external magnetic field. The percentage inhibition efficiency (%IE) of aluminum corrosion with LABS is slightly increased in the presences of an external magnetic field. Results of weight loss method are highly consistent with those obtained by hydrogen evolution method and both indicate that the %IE increases with increasing inhibitor concentration, and the presence of external magnetic field. The %IE decreases as the concentration of HCl increases. For the tested additives, an increase in the temperature was found to decrease the %IE.