Effect of Antimony Addition with Lead in H2SO4 Acidic Medium on Corrosion Behavior
Abstract
Lead can be considered as a pollutant material due to its toxic effect resulting from the tendency of potential values of the electrode to oxidization through ions release. In this study, the effect of Antimony (Sb) addition with Lead (Pb) at 2% – 5% by weight on the corrosion behavior has been investigated using the method of weight loss. The study conducted at a corrosion period of 288 and three H2SO4 acid solution concentrations. Study results showed that the addition of Antimony with Lead enhances the corrosion resistance and the better improvement obtained for alloy1 with all acid concentrations which found to be 6.6575 µm/y, 5.8628 µm/y and 6.1003 µm/y for H2SO4 concentration of 0.1M, 0.2M, and 0.3M respectively.On the other hand, the minimum rate of total corrosion obtained for alloy4 with all acid concentrations and found to be 4.9249 µm/y, 5.538 µm/y, and 5.2946 µm/y for H2SO4 concentration of 0.1M, 0.2M, and 0.3M respectively. In general, the rate of total corrosion inversely proportions to the corrosion medium concentration. Furthermore, the maximum and minimum average rates of corrosion observed at 0.2M and 0.3M respectively. However, the alloy of 15%Sb-83.35Pb didn’t show any significant effect in the resistance proportion of corrosion to the high contents of Antimony compared to the first three alloys.
