Effect of Equal-Channel Angular Pressing on Pitting Corrosion of Pure Aluminum

Figure 3

Time-dependence of the anodic current density of pure Al (a) and Al (AA1100) (b) while kept at constant potentials of, respectively, 0.3 V and 0.2 V nobler than their pitting corrosion potential in a solution containing 0.1 mol·dm⁻³ of Na₂SO₄ and 300 ppm of Cl⁻.

(a)

(b)