STUDYING THE EFFECT OF ADDING ANTIMONY (SB) TO THE LEAD BASE ALLOYS ON CORROSIONIN ACIDIC MEDIUMS

Due to the toxicity and harmful environmental effect of (Pb) because the potential electrode values tendency to losses ions and oxidization, Antimony adding impact in the range of (2-15) wt. % to lead on the corrosion resistance, in three concentration of acidic acid solution with corrosion interval (288 hour), were investigated by weight loss measurements. The experimental results show that, antimony added to lead increase the corrosion resistance of lead, therefore the maximum total corrosion rate done in alloy1 for all concentration which used in previous work. It was (1.77133E-17MPY) for 0.1MHCl, (1.73E-17MPY) for 0.2MHCl and was (1.389E17MPY) for 0.3MHCl. Meanwhile the minimum total corrosion rate was in alloy4 for all concentration, it was (1.57E-17MPY) for 0.1MHCl, (1.39E-17MPY) for 0.2MHCl and (1.24E-17MPY) for 0.3MHCl. The general total corrosion rates degrease with increasing the concentration of corrosion medium, and the maximum average corrosion rates were in 0.1MHCl, wherever the minimum average corrosion rates were in 0.3MHCl.Howeve, the alloy (15%Sb-83.35%Pb) didn't show the significant effect in corrosion resistance proportion to high Antimony contents comparison with the three first alloys