Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5370234 | Applied Surface Science | 2006 | 6 Pages |
Effect of the addition of oxo-anions MoO42â, SiO42â, HPO42â and HCO3â on the corrosion and passivation of tin in a synthetic medium similar to industrial water has been studied by using electrochemical techniques. The results show that tin manifests a passivation phenomenon with breakdown of passivity. Addition of oxo-anions leads to retard a breakdown of passivation and the inhibition of pitting process of tin. The more marked inhibiting effect is obtained in the presence of MoO42â and SiO42â. The detailed study of the influence of the MoO42â shows that the pitting sensitivity of tin decreases when the molybdate concentration increases in solution. Then, these ions offer a good efficiency even at high temperature and for a chloride concentration up to 0.5Â M.