ANODIC DISSOLUTION OF IRON IN ORGANIC SOLVENTS.

While the anodic behaviour of Armco iron and the low alloyed steel is strongly influenced by the presence of aggressive ions and by the water content of the solutions, both 304 L and 446 stainless steels show, even in the presence of relatively high concentration of aggressive ions, the formation of stable protective films. The lowest value of the passivation current has been obtained for Armco iron and the low alloyed steel in the base solution (0. 1 M LiClO in organic solvent) at a water content of ca. 0. 5% in all the solvents, the current value increased, either increasing or decreasing the water content. The effect of the presence of chromium seems to be predominant, with respect to water content, on the behaviour of the stainless steels examined